Journal articles: 'Dimensional Nanostructure'

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Gupta, Vinod Kumar, Njud S. Alharbie, Shilpi Agarwal, and Vladimir A. Grachev. "New Emerging One Dimensional Nanostructure Materials for Gas Sensing Application: A Mini Review." Current Analytical Chemistry 15, no. 2 (February 19, 2019): 131–35. http://dx.doi.org/10.2174/1573411014666180319151407.

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Background: Nanomaterials have numerous potential applications in many areas such as electronics, optoelectronics, catalysis and composite materials. Particularly, one dimensional (1D) nanomaterials such as nanobelts, nanorods, and nanotubes can be used as either functional materials or building blocks for hierarchical nanostructures. 1D nanostructure plays a very important role in sensor technology. Objective: In the current review, our efforts are directed toward recent review on the use of 1D nanostructure materials which are used in the literature for developing high-performance gas sensors with fast response, quick recovery time and low detection limit. This mini review also focuses on the methods of synthesis of 1D nanostructural sensor array, sensing mechanisms and its application in sensing of different types of toxic gases which are fatal for human mankind. Particular emphasis is given to the relation between the nanostructure and sensor properties in an attempt to address structure-property correlations. Finally, some future research perspectives and new challenges that the field of 1D nanostructure sensors will have to address are also discussed.

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Tahmasian, Arineh, Ali Morsali, and Sang Woo Joo. "Sonochemical Syntheses of a One-Dimensional Mg(II) Metal-Organic Framework: A New Precursor for Preparation of MgO One-Dimensional Nanostructure." Journal of Nanomaterials 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/313456.

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Nanostructure of aMgIImetal-organic framework (MOF), {[Mg(HIDC)(H2O)2]·1.5H2O}n(1) (H3IDC = 4,5-imidazoledicarboxylic acid), was synthesized by a sonochemical method and characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy, and elemental analyses. The effect of concentration of starting reagents on size and morphology of nanostructured compound1has been studied. Calcination of the bulk powder and nanosized compound1at 650°C under air atmosphere yields MgO nanostructures. Results show that the size and morphology of the MgO nanoparticles are dependent upon the particles size of compound1.

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Yang, Ming, Xiaohua Chen, Zidong Wang, Yuzhi Zhu, Shiwei Pan, Kaixuan Chen, Yanlin Wang, and Jiaqi Zheng. "Zero→Two-Dimensional Metal Nanostructures: An Overview on Methods of Preparation, Characterization, Properties, and Applications." Nanomaterials 11, no. 8 (July 23, 2021): 1895. http://dx.doi.org/10.3390/nano11081895.

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Metal nanostructured materials, with many excellent and unique physical and mechanical properties compared to macroscopic bulk materials, have been widely used in the fields of electronics, bioimaging, sensing, photonics, biomimetic biology, information, and energy storage. It is worthy of noting that most of these applications require the use of nanostructured metals with specific controlled properties, which are significantly dependent on a series of physical parameters of its characteristic size, geometry, composition, and structure. Therefore, research on low-cost preparation of metal nanostructures and controlling of their characteristic sizes and geometric shapes are the keys to their development in different application fields. The preparation methods, physical and chemical properties, and application progress of metallic nanostructures are reviewed, and the methods for characterizing metal nanostructures are summarized. Finally, the future development of metallic nanostructure materials is explored.

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Wang, Wei, Shirui Guo, Isaac Ruiz, Mihrimah Ozkan, and Cengiz S. Ozkan. "Synthesis of Three Dimensional Carbon Nanostructure Foams for Supercapacitors." MRS Proceedings 1451 (2012): 85–90. http://dx.doi.org/10.1557/opl.2012.1330.

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ABSTRACTIn this work, we demonstrated the growth of three dimensional graphene/carbon nanotubes hybrid carbon nanostructures on metal foam through a one-step chemical vapor deposition (CVD). The as-grown three dimensional carbon nanostructure foams can be potentially used as the electrodes of energy storage devices such as supercapacitors and batteries. During the CVD process, the carbon nanostructures are grown on highly porous nickel foam to form a high surface area 3-D carbon nanostructure by introducing a mixture precursor gases (H2, C2H2). The surface morphology was investigated by scanning electron microscopy (SEM) and the results demonstrated relatively homogeneous and densely packed 3-D carbon nanostructure. The quality was characterized by Raman spectroscopy. To further increase the capacitive capability the supercapacitors were fabricated based on the electrodes of carbon nanostructure foam and cyclic voltammetry, charge-discharge, and electrochemical impedance spectroscopy (EIS) were conducted to determine their performance.

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Cho, Seong J., Se Yeong Seok, Jin Young Kim, Geunbae Lim, and Hoon Lim. "One-Step Fabrication of Hierarchically Structured Silicon Surfaces and Modification of Their Morphologies Using Sacrificial Layers." Journal of Nanomaterials 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/289256.

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Fabrication of one-dimensional nanostructures is a key issue for optical devices, fluidic devices, and solar cells because of their unique functionalities such as antireflection and superhydrophobicity. Here, we report a novel one-step process to fabricate patternable hierarchical structures consisting of microstructures and one-dimensional nanostructures using a sacrificial layer. The layer plays a role as not only a micromask for producing microstructures but also as a nanomask for nanostructures according to the etching time. Using this method, we fabricated patterned hierarchical structures, with the ability to control the shape and density of the nanostructure. The various architectures provided unique functionalities. For example, our sacrificial-layer etching method allowed nanostructures denser than what would be attainable with conventional processes to form. The dense nanostructure resulted in a very low reflectance of the silicon surface (less than 1%). The nanostructured surface and hierarchically structured surface also exhibited excellent antiwetting properties, with a high contact angle (>165°) and low sliding angle (<1°). We believe that our fabrication approach will provide new insight into functional surfaces, such as those used for antiwetting and antireflection surface applications.

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Verma, Sneha, and B. M. A. Rahman. "Computational Investigation of Advanced Refractive Index Sensor Using 3-Dimensional Metamaterial Based Nanoantenna Array." Sensors 23, no. 3 (January 23, 2023): 1290. http://dx.doi.org/10.3390/s23031290.

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Photonic researchers are increasingly exploiting nanotechnology due to the development of numerous prevalent nanosized manufacturing technologies, which has enabled novel shape-optimized nanostructures to be manufactured and investigated. Hybrid nanostructures that integrate dielectric resonators with plasmonic nanostructures are also offering new opportunities. In this work, we have explored a hybrid coupled nano-structured antenna with stacked multilayer lithium tantalate (LiTaO3) and Aluminum oxide (Al2O3), operating at wavelength ranging from 400 nm to 2000 nm. Here, the sensitivity response has been explored of these nano-structured hybrid arrays. It shows a strong electromagnetic confinement in the separation gap (g) of the dimers due to strong surface plasmon resonance (SPR). The influences of the structural dimensions have been investigated to optimize the sensitivity. The designed hybrid coupled nanostructure with the combination of 10 layers of gold (Au) and Lithium tantalate (LiTaO3) or Aluminum oxide (Al2O3) (five layers each) having height, h1 = h2 = 10 nm exhibits 730 and 660 nm/RIU sensitivity, respectively. The sensitivity of the proposed hybrid nanostructure has been compared with a single metallic (only gold) elliptical paired nanostructure. Depending on these findings, we demonstrated that a roughly two-fold increase in the sensitivity (S) can be obtained by utilizing a hybrid coupled nanostructure compared to an identical nanostructure, which competes with traditional sensors of the same height, (h). Our innovative novel plasmonic hybrid nanostructures provide a framework for developing plasmonic nanostructures for use in various sensing applications.

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Datta, Anuja, Devajyoti Mukherjee, Corisa Kons, Sarath Witanachchi, and Pritish Mukherjee. "Ferroelectricity in Strategically Synthesized Pb-free LiNbO3-type ZnSnO3 Nanostructure Arrayed Thick Films." MRS Proceedings 1729 (2015): 105–10. http://dx.doi.org/10.1557/opl.2015.171.

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ABSTRACTWe report the evidence of ferroelectricity from LN-type ZnSnO3 nanostructure arrayed thick films (10 - 20 µm) on Si with remanent polarization value as high as ≈ 30 µC/cm2 in nanowire arrays. A combined pulsed-laser deposition (PLD) technique and a solvothermal synthesis scheme was adopted to effectively synthesize the nanostructured samples assisted by conducting ZnO template-layers. The similar crystal symmetry and comparable lattice parameter between ZnO and LN-type ZnSnO3 facilitated the dense growth of high-quality ZnSnO3 nanostructure arrays in the form of one-dimensional vertical nanowires, nanorods and two-dimensional nanoflakes. The strategic synthesis method allowed controlled tunability of the morphology, crystallinity, and packing density of ZnSnO3 nanostructures, which in turn facilitated the measurement of ferroelectric (FE) properties using a simple sandwich-device geometry. Analyses of the FE properties in relation to the structures are presented and their potential for designing future Pb-free FE devices for non-volatile memory applications is discussed.

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Tatsuoka, Hirokazu, Wen Li, Er Chao Meng, Daisuke Ishikawa, and Kaito Nakane. "Syntheses and Structural Control of Silicide, Oxide and Metallic Nano-Structured Materials." Solid State Phenomena 213 (March 2014): 35–41. http://dx.doi.org/10.4028/www.scientific.net/ssp.213.35.

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The structural control and morphological modification of a series of silicide, oxide and Ag metal nanostructures have been further discussed with reviews of nanostructure syntheses, such as CrSi2 nanowire bundles dendrites, MoSi2 nanosheets, α-Fe2O3 nanowires nanobelts, CuO/Cu2O nanowire axial heterostructures, ZrO2/SiOx and CrSi2/SiOx core/shell nanowires. In addition, the syntheses of Ag three-dimensional dendrites, two-dimensional dendrites, two-dimensional fractal structures, particles and nanowires also were discussed. Moreover, the structural and morphological properties of the nanostructures were examined. The structural control and morphological modifications of the nanostructures have been successfully demonstrated by the appropriate thermal treatments with specific starting materials. A large volume of silicide nanowire bundles, large area of oxide nanowire arrays and large area Ag nanostructure coatings were successfully fabricated.

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Yoon, Sang-Hyeok, and Kyo-Seon Kim. "Preparation of 1-D Nanostructured Tungsten Oxide Thin Film on Wire Mesh by Flame Vapor Deposition Process." Journal of Nanoscience and Nanotechnology 20, no. 7 (July 1, 2020): 4517–20. http://dx.doi.org/10.1166/jnn.2020.17552.

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Flame vapor deposition (FVD) process can be used to prepare the tungsten oxide thin film which has photocatalytic activity at visible light. The FVD process is fast and economical to prepare thin film on substrate comparing to other processes. Various nanostructured thin films could be easily prepared by controlling several process parameters in FVD. One-dimensional (1-D) nanostructures with high surface area also can be prepared reproducibly. The tungsten wire precursor was oxidized and vaporized in flame to be deposited onto the substrate. The nanostructure shapes can be adjusted by controlling nucleation and growth rates of tungsten oxide vapor on substrate. In this study, nanostructured tungsten oxide thin film was fabricated on stainless steel mesh by FVD process changing the process variables of FVD. We found that proper selection of suitable process conditions in FVD was quite important for the 1-D nanostructure growth on stainless steel wire mesh with high surface area, which is quite important for photocatalytic application.

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Zhang, Shiying, Huizhao Zhuang, Chengshan Xue, and Baoli Li. "Effect of Annealing on Morphology and Photoluminescence of β-Ga2O3 Nanostructures." Journal of Nanoscience and Nanotechnology 8, no. 7 (July 1, 2008): 3454–57. http://dx.doi.org/10.1166/jnn.2008.138.

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A novel method was applied to prepare one-dimensional β-Ga2O3 nanostructure films. In this method, β-Ga2O3 nanostructures have been successfully synthesized on Si(111) substrates through annealing sputtered Ga2O3/Mo films for differernt time under flowing ammonia. The as-synthesized β-Ga2O3 nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectrum. The results show that the formed nanostructures are single-crystalline Ga2O3 with monoclinic structure. The annealing time of the samples has an evident influence on the morphology and optical property of the nanostructured β-Ga2O3 synthesized. The representative photoluminescence spectrum at room temperature exhibits a strong and broad emission band centered at 411.5 nm and a relatively weak emission peak located at 437.6 nm. The growth mechanism of the β-Ga2O3 nanostructured materials is also discussed briefly.

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Fang, Xiaosheng, Linfeng Hu, Changhui Ye, and Lide Zhang. "One-dimensional inorganic semiconductor nanostructures: A new carrier for nanosensors." Pure and Applied Chemistry 82, no. 11 (August 1, 2010): 2185–98. http://dx.doi.org/10.1351/pac-con-09-11-40.

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One-dimensional (1D) inorganic semiconductor nanostructures have witnessed an explosion of interest over the last decade because of advances in their controlled synthesis and unique property and potential applications. A wide range of gases, chemicals, biomedical nanosensors, and photodetectors have been assembled using 1D inorganic semiconductor nanostructures. The high-performance characteristics of these nanosensors are particularly attributable to the inorganic semiconducting nanostructure high surface-to-volume ratio (SVR) and its rationally designed surface. In this review, we provide a brief summary of the state-of-the-art research activities in the field of 1D inorganic semiconductor nanostructure-based nanosensors. Some perspectives and the outlook for future developments in this area are presented.

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Kalita, Dhiman, Jiten Kumar Deuri, Puspanjali Sahu, and Unnikrishnan Manju. "Plasmonic nanostructure integrated two-dimensional materials for optoelectronic devices." Journal of Physics D: Applied Physics 55, no. 24 (February 17, 2022): 243001. http://dx.doi.org/10.1088/1361-6463/ac5191.

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Abstract Last decade has seen an explosion in the exploration of two-dimensional materials for optoelectronic applications owing to their novel optical and electronic properties. However, these materials, in general, are poor light absorbers with restricted spectral responsivity which limits their efficiency. Integration of these two-dimensional materials with each other and with plasmonic metal nanostructures enhances their light absorption efficiency and also influence the electronic properties. This review highlights the optical and electronic properties of two-dimensional materials integrated with other plasmonic two- dimensional materials or with plasmonic metal nanostructures. In addition, an overview of the optoelectronic properties of plasmonic nanostructure integrated two-dimensional heterostructures is also presented.

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Chen, Huige, Run Shi, and Tierui Zhang. "Nanostructured Photothermal Materials for Environmental and Catalytic Applications." Molecules 26, no. 24 (December 13, 2021): 7552. http://dx.doi.org/10.3390/molecules26247552.

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Solar energy is a green and sustainable clean energy source. Its rational use can alleviate the energy crisis and environmental pollution. Directly converting solar energy into heat energy is the most efficient method among all solar conversion strategies. Recently, various environmental and energy applications based on nanostructured photothermal materials stimulated the re-examination of the interfacial solar energy conversion process. The design of photothermal nanomaterials is demonstrated to be critical to promote the solar-to-heat energy conversion and the following physical and chemical processes. This review introduces the latest photothermal nanomaterials and their nanostructure modulation strategies for environmental (seawater evaporation) and catalytic (C1 conversion) applications. We present the research progress of photothermal seawater evaporation based on two-dimensional and three-dimensional porous materials. Then, we describe the progress of photothermal catalysis based on layered double hydroxide derived nanostructures, hydroxylated indium oxide nanostructures, and metal plasmonic nanostructures. Finally, we present our insights concerning the future development of this field.

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Fan, Xi Qiu. "Realization of Three-Dimensional Nanostructure Fabrication by Nanoimprint on Silicon Substrate." Advanced Materials Research 211-212 (February 2011): 1105–9. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.1105.

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Traditional optical lithography techniques to fabricate three-dimensional (3D) nanostructures are complicated and time consuming. Due to the capability to replicate nanostructures repeatedly in a large area with high resolution and uniformity, nanoimprint (NI) has been recognized as one of the promising approaches to fabricate 3-D nanostructures with high throughput and low cost. This paper introduces a novel 3-D nanostructure fabrication method by nanoimprint on silicon substrate. Nanoscale gratings and microlens array are taken as examples of 3-D nanostructures fabricated by nanoimprint. High fidelity demonstrates the possibility of nanoimprint to fabricate 3-D nanostructures on silicon substrate.

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Sousa Neto, Vicente de Oliveira, Gilberto Dantas Saraiva, A. J. Ramiro De Castro, Paulo de Tarso Cavalcante Freire, and Ronaldo Ferreira Do Nascimento. "Electrodeposition of One-Dimensional Nanostructures: Environmentally Friendly Method." Journal of Composites and Biodegradable Polymers 10 (December 28, 2022): 19–42. http://dx.doi.org/10.12974/2311-8717.2022.10.03.

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During the past decade, nanotechnology has become an active field of research because of its huge potential for a variety of applications. When the size of many established, well-studied materials is reduced to the nanoscale, radically improved or new surprising properties often emerge. There are mainly four types of nanostructures: zero, one, two and three dimensional structures. Among them, one-dimensional (1D) nanostructures have been the focus of quite extensive studies worldwide, partially because of their unique physical and chemical properties. Compared to the other three dimensional structures, the first characteristic of 1D nanostructure is its smaller dimension structure and high aspect ratio, which could efficiently transport electrical carriers along one controllable direction; as a consequence they are highly suitable for moving charges in integrated nanoscale systems. The second characteristic of 1D nanostructure is its device function, which can be exploited as device elements in many kinds of nanodevices. Indeed it is important to note that superior physical properties including superconductivity, enhanced magnetic coercivity and the unusual magnetic state of some 1D nanostructures have been theoretically predicted and some of them have already been confirmed by experiments. In order to attain the potential offered by 1D nanostructures, one of the most important issues is how to synthesize 1D nanostructures in large quantities with a convenient method. Many synthetic strategies, such as solution or vapor-phase approaches, template-directed methods, electrospinning techniques, solvothermal syntheses, self-assembly methods, etc., have been developed to fabricate different classes of 1D nanostructured materials, including metals, semiconductors, functional oxides, structural ceramics, polymers and composites. All the methods can be divided into two categories: those carried out in a gas phase (i.e., “dry processes”) and those carried out in a liquid phase (i.e., “wet processes”). The dry processes include, for example, techniques such as chemical vapor deposition (CVD), physical vapor deposition (PVD), pulse laser deposition (PLD), metal-organic chemical vapor deposition (MOCVD), and molecular beam epitaxy (MBE). In general, these gas phase processes require expensive and specialized equipments. The wet processes include sol-gel method, hydrothermal method, chemical bath deposition (CBD) and electrodeposition. Among the above mentioned methods, electrodeposition has many advantages such as low cost, environmentally friendly, high growth rate at relatively low temperatures and easier control of shape and size. Generally, there are two strategies to produce the 1D nanostructures through the electrochemical process. They are the template-assisted electrodeposition, and the template-free electrodeposition. In this chapter, we will approach the recent progress and offer some prospects of future directions in electrodeposition of 1D nanostructures. Electrodeposition is a simple and flexible method for the synthesis of one-dimensional (1D) nanostructures and has attracted great attention in recent years.

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Basioli, Lovro, Krešimir Salamon, Marija Tkalčević, Igor Mekterović, Sigrid Bernstorff, and Maja Mičetić. "Application of GISAXS in the Investigation of Three-Dimensional Lattices of Nanostructures." Crystals 9, no. 9 (September 13, 2019): 479. http://dx.doi.org/10.3390/cryst9090479.

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The application of the grazing-incidence small-angle X-ray scattering (GISAXS) technique for the investigation of three-dimensional lattices of nanostructures is demonstrated. A successful analysis of three-dimensionally ordered nanostructures requires applying a suitable model for the description of the nanostructure ordering. Otherwise, it is possible to get a good agreement between the experimental and the simulated data, but the parameters obtained by fitting may be completely incorrect. In this paper, we theoretically examine systems having different types of nanostructure ordering, and we show how the choice of the correct model for the description of ordering influences the analysis results. Several theoretical models are compared in order to show how to use GISAXS in the investigation of self-assembled arrays of nanoparticles, and also in arrays of nanostructures obtained by ion-beam treatment of thin films or surfaces. All models are supported by experimental data, and the possibilities and limitations of GISAXS for the determination of material structure are discussed.

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Fang, Shan, Laifa Shen, Zhenkun Tong, Hao Zheng, Fang Zhang, and Xiaogang Zhang. "Si nanoparticles encapsulated in elastic hollow carbon fibres for Li-ion battery anodes with high structural stability." Nanoscale 7, no. 16 (2015): 7409–14. http://dx.doi.org/10.1039/c5nr00132c.

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Here, a novel one-dimensional core-shell nanostructure in which the Si nanoparticles have been confined within hollow carbon nanofibres. The hierarchical nanostructures show superior rate capabilities and stable cycling performance in rechargeable batteries.

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Guo, Haomin, Qi Hu, Chengyun Zhang, Zihao Fan, Haiwen Liu, Runmin Wu, Zhiyu Liu, and Shusheng Pan. "Resonance Coupling in Si@WS2Core-Ω Shell Nanostructure." Nanomaterials 13, no. 3 (January 23, 2023): 462. http://dx.doi.org/10.3390/nano13030462.

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Realizing strong laser–matter interaction in a heterostructure consisting of two-dimensional transition metal dichalcogenides (TMDCs) and an optical nanocavity is a potential strategy for novel photonic devices. In this paper, two core-Ω shell nanostructures, Si@WS2 core-Ω shell nanostructure on glass/Si substrates, are briefly introduced. A strong laser–matter interaction occurred in the Si@WS2 core-Ω shell nanostructure when it was excited by femtosecond (fs) laser in the near-infrared-1 region (NIR-1, 650 nm–950 nm), resulting in a resonance coupling between the electric dipole resonance (EDR) of the Si nanosphere (NS) and the exciton resonance of the WS2 nanomembrane (NMB). The generation of resonance coupling regulates the resonant mode of the nanostructure to realize the multi-dimensional nonlinear optical response, which can be utilized in the fields of biological imaging and nanoscale light source.

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Chen, Hsin-Yu, Yi-Hong Xiao, Lin-Jiun Chen, Chi-Ang Tseng, and Chuan-Pei Lee. "Low-Dimensional Nanostructures for Electrochemical Energy Applications." Physics 2, no. 3 (September 11, 2020): 481–502. http://dx.doi.org/10.3390/physics2030027.

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Materials with different nanostructures can have diverse physical properties, and they exhibit unusual properties as compared to their bulk counterparts. Therefore, the structural control of desired nanomaterials is intensely attractive to many scientific applications. In this brief review, we mainly focus on reviewing our recent reports based on the materials of graphene and the transition metal chalcogenide, which have various low-dimensional nanostructures, in relation to the use of electrocatalysts in electrochemical energy applications; moreover, related literatures were also partially selected for discussion. In addition, future aspects of the nanostructure design related to the further enhancement of the performance of pertinent electrochemical energy devices will also be mentioned.

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Razzaq, Abdul, and Su-Il In. "TiO2 Based Nanostructures for Photocatalytic CO2 Conversion to Valuable Chemicals." Micromachines 10, no. 5 (May 15, 2019): 326. http://dx.doi.org/10.3390/mi10050326.

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Photocatalytic conversion of CO2 to useful products is an alluring approach for acquiring the two-fold benefits of normalizing excess atmospheric CO2 levels and the production of solar chemicals/fuels. Therefore, photocatalytic materials are continuously being developed with enhanced performance in accordance with their respective domains. In recent years, nanostructured photocatalysts such as one dimensional (1-D), two dimensional (2-D) and three dimensional (3-D)/hierarchical have been a subject of great importance because of their explicit advantages over 0-D photocatalysts, including high surface areas, effective charge separation, directional charge transport, and light trapping/scattering effects. Furthermore, the strategy of doping (metals and non-metals), as well as coupling with a secondary material (noble metals, another semiconductor material, graphene, etc.), of nanostructured photocatalysts has resulted in an amplified photocatalytic performance. In the present review article, various titanium dioxide (TiO2)-based nanostructured photocatalysts are briefly overviewed with respect to their application in photocatalytic CO2 conversion to value-added chemicals. This review primarily focuses on the latest developments in TiO2-based nanostructures, specifically 1-D (TiO2 nanotubes, nanorods, nanowires, nanobelts etc.) and 2-D (TiO2 nanosheets, nanolayers), and the reaction conditions and analysis of key parameters and their role in the up-grading and augmentation of photocatalytic performance. Moreover, TiO2-based 3-D and/or hierarchical nanostructures for CO2 conversions are also briefly scrutinized, as they exhibit excellent performance based on the special nanostructure framework, and can be an exemplary photocatalyst architecture demonstrating an admirable performance in the near future.

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Jiang, Ai Min, Xian Quan Jiang, Jin Yang, Rong Jie Yang, and Rong Yu. "Research Progress of Tungsten Nanorods and Nanoplatelets." Advanced Materials Research 989-994 (July 2014): 552–55. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.552.

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Because of the characteristics of both one dimensional nanostructure and excellent physical and chemical properties, the kinds of novel nanomaterials-tungsten carbide nanowires, have important academic significance and practical meaning. The research development of one-dimensional nanostructured tungsten carbide is reviewed. The production methods of one-dimensional nanostructured tungsten carbide, such as nanotubes, nanorods, nanowires and nanoneedles by thermal decomposition technique, vapour deposition technique, magnetron sputtering technique, Eruptive heating technique and template technique respectively are systematically introduced. This paper summarizes the growth mechanisms and the problems involved in the existing synthesis methods. The research tendency is also forecasted.

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Shaalan, Nagih M. "Promising Novel Barium Carbonate One-Dimensional Nanostructures and Their Gas Sensing Application: Preparation and Characterization." Chemosensors 10, no. 6 (June 17, 2022): 230. http://dx.doi.org/10.3390/chemosensors10060230.

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Recently, barium carbonate-based nanomaterials have been used for sensor and catalysis applications. The sensing performance can be improved with a suitable one-dimensional nanostructure. In this regard, novel nanosized BaCO3 materials were fabricated by a one-pot designed thermal evaporation system. Ten milligrams of Ba as raw material were used to deposit BaCO3 nanostructures at a pressure of 0.85 torr and a temperature of 850 °C in a partial oxygen atmosphere of the ambient. This simple method for fabricating novel BaCO3 nanostructures is presented here. X-ray diffraction was indexed on the orthorhombic polycrystalline structure of the prepared BaCO3. The nanostructures deposited here could be described as Datura-like structures linked with nanowires of 20–50 nm in diameter and 5 µm in length. The BaCO3 nanostructure prepared by the current method exhibited a semiconductor-like behavior with an activation energy of 0.68 eV. This behavior was ascribed to the nature of the morphology, which may possess large defective points. Thus, this nanostructure was subjected to gas sensing measurements, showing high activity toward NO2 gas. The proposed sensor also underwent deep investigation toward NO2 at various gas concentrations and working. The response and recovery time constants were recorded in the ranges of 6–20 s and 30–150 s, respectively. The sensor showed its reversibility toward NO2 when the sensor signal was repeated at various cycles of various concentrations. The sensor was exposed to different levels of humidity, showing high performance toward NO2 gas at 250 °C. The sensor exhibited fast response and recovery toward NO2 gas.

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D'Alba, Liliana, Vinodkumar Saranathan, Julia A. Clarke, Jakob A. Vinther, Richard O. Prum, and Matthew D. Shawkey. "Colour-producing β-keratin nanofibres in blue penguin ( Eudyptula minor ) feathers." Biology Letters 7, no. 4 (February 9, 2011): 543–46. http://dx.doi.org/10.1098/rsbl.2010.1163.

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The colours of living organisms are produced by the differential absorption of light by pigments (e.g. carotenoids, melanins) and/or by the physical interactions of light with biological nanostructures, referred to as structural colours. Only two fundamental morphologies of non-iridescent nanostructures are known in feathers, and recent work has proposed that they self-assemble by intracellular phase separation processes. Here, we report a new biophotonic nanostructure in the non-iridescent blue feather barbs of blue penguins ( Eudyptula minor ) composed of parallel β-keratin nanofibres organized into densely packed bundles. Synchrotron small angle X-ray scattering and two-dimensional Fourier analysis of electron micrographs of the barb nanostructure revealed short-range order in the organization of fibres at the appropriate size scale needed to produce the observed colour by coherent scattering. These two-dimensional quasi-ordered penguin nanostructures are convergent with similar arrays of parallel collagen fibres in avian and mammalian skin, but constitute a novel morphology for feathers. The identification of a new class of β-keratin nanostructures adds significantly to the known mechanisms of colour production in birds and suggests additional complexity in their self-assembly.

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Lee, Jinho, Donghwi Cho, Haomin Chen, Young-Seok Shim, Junyong Park, and Seokwoo Jeon. "Proximity-field nanopatterning for high-performance chemical and mechanical sensor applications based on 3D nanostructures." Applied Physics Reviews 9, no. 1 (March 2022): 011322. http://dx.doi.org/10.1063/5.0081197.

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In this era of the Internet of Things, the development of innovative sensors has rapidly accelerated with that of nanotechnology to accommodate various demands for smart applications. The practical use of three-dimensional (3D) nanostructured materials breaks several limitations of conventional sensors, including the large surface-to-volume ratio, precisely tunable pore size and porosity, and efficient signal transduction of 3D geometries. This review provides an in-depth discussion on recent advances in chemical and mechanical sensors based on 3D nanostructures, which are rationally designed and manufactured by advanced 3D nanofabrication techniques that consider structural factors (e.g., porosity, periodicity, and connectivity). In particular, we focus on a proximity-field nanopatterning technique that specializes in the production of periodic porous 3D nanostructures that satisfy the structural properties universally required to improve the performance of various sensor systems. State-of-the-art demonstrations of high-performance sensor devices such as supersensitive gas sensors and wearable strain sensors realized through designed 3D nanostructures are summarized. Finally, challenges and outlooks related to nanostructures and nanofabrication for the practical application of 3D nanostructure-based sensor systems are proposed.

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Roy, Souradeep, Sourav Sain, Shikha Wadhwa, Ashish Mathur, Santosh Dubey, and Susanta S. Roy. "Electrochemical impedimetric analysis of different dimensional (0D–2D) carbon nanomaterials for effective biosensing of L-tyrosine." Measurement Science and Technology 33, no. 1 (October 27, 2021): 014002. http://dx.doi.org/10.1088/1361-6501/ac2cf3.

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Abstract Electrochemical biosensors employing nano-transduction surfaces are considered highly sensitive to the morphology of nanomaterials. Various interfacial parameters namely charge transfer resistance, double layer capacitance, heterogeneous electron transfer rate and diffusion limited processes, depend strongly on the nanostructure geometry which eventually affects the biosensor performance. The present work deals with a comparative study of electrochemical impedance-based detection of L-tyrosine (or simply tyrosine) by employing carbon nanostructures (graphene quantum dots, single walled carbon nanotubes (CNTs) and graphene) along with tyrosinase as the bio-receptor. Specifically, the role of carbon nanostructures (i.e. 0D, 1D and 2D) on charge transfer resistance is investigated by applying time-varying electric field at the nano-bioelectrode followed by calculating the heterogeneous electron transfer rate, double layer capacitor current and their effects on limits of detection and sensitivities towards tyrosine recognition. A theoretical model based on Randel’s equivalent circuit is proposed to account for the redox kinetics at various carbon nanostructure/enzyme hybrid surfaces. It was observed that, the 1D morphology (single walled CNTs) exhibited lowest charge transfer resistance ∼2.62 kΩ (lowest detection limit of 0.61 nM) and highest electron transfer rate ∼0.35 μm s−1 (highest sensitivity 0.37 kΩ nM−1 mm−2). Our results suggest that a suitable morphology of carbon nanostructure would be essential for efficient and sensitive detection of tyrosine.

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Manabeng, Matshidiso, Bernard S. Mwankemwa, Richard O. Ocaya, Tshwafo E. Motaung, and Thembinkosi D. Malevu. "A Review of the Impact of Zinc Oxide Nanostructure Morphology on Perovskite Solar Cell Performance." Processes 10, no. 9 (September 7, 2022): 1803. http://dx.doi.org/10.3390/pr10091803.

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Zinc oxide (ZnO) has been widely studied over the last decade for its remarkable properties in optoelectronic and photovoltaic devices because of its high electron mobility and excitonic properties. It has probably the broadest range of nanostructured forms that are also easy and cheap to synthesize using a wide variety of methods. The volume of recent work on ZnO nanostructures and their devices can potentially overshadow significant developments in the field. Therefore, there is a need for a concise description of the most recent advances in the field. In this review, we focus on the effect of ZnO nanostructure morphologies on the performance of ZnO-based solar cells sensitized using methylammonium lead iodide perovskite. We present an exhaustive discussion of the synthesis routes for different morphologies of the ZnO nanostructure, ways of controlling the morphology, and the impact of morphology on the photoconversion efficiency of a given perovskite solar cell (PSC). We find that although the ZnO nanostructures are empirically similar, one-dimensional structures appear to offer the most promise to increasing photoconversion efficiency (PCE) by their proclivity to align and form vertically stacked layers. This is thought to favor electron hopping, charge mobility, and conductivity by allowing multiple charge conduction pathways and increasing the effective junction cross-sectional area. The combined effect is a net increase in PCE due to the reduced surface reflection, and improved light absorption.

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Deng, Guochu, Aili Ding, Wenxiu Cheng, Xinsen Zheng, and Pingsun Qiu. "Two-dimensional zinc oxide nanostructure." Solid State Communications 134, no. 4 (April 2005): 283–86. http://dx.doi.org/10.1016/j.ssc.2005.01.022.

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Peng, Lin, Linfeng Hu, and Xiaosheng Fang. "Low-Dimensional Nanostructure Ultraviolet Photodetectors." Advanced Materials 25, no. 37 (June 21, 2013): 5321–28. http://dx.doi.org/10.1002/adma.201301802.

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LI, WEN, DAISUKE ISHIKAWA, and HIROKAZU TATSUOKA. "SYNTHESES OF NANOSTRUCTURE BUNDLES BASED ON SEMICONDUCTING METAL SILICIDES." Functional Materials Letters 06, no. 05 (October 2013): 1340011. http://dx.doi.org/10.1142/s1793604713400110.

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A variety of nanostructure bundles and arrays based on semiconducting metal silicides have been synthesized using abundant and non-toxic starting materials. Three types of fabrication techniques of the nanostructure bundles or arrays, including direct growth, template synthesis using natural nanostructured materials and template synthesis using artificially fabricated nanostructured materials are demonstrated. CrSi 2 nanowire bundles were directly grown by the exposure of Si substrates to CrCl 2 vapor at atmospheric pressure. A hexagonal MoSi 2 nanosheet, Mg 2 Si / MgO composite nanowire and Mg 2 Si nanowire bundles and MnSi 1.7 nanowire array were synthesized using a MoS 2 layered material, a SiO x nanofiber bundle, a Si nanowire array, and a Si nanowire array as the templates, respectively. Additionally, the fabrication phenomenon and structural properties of the nanostructured semiconducting metal silicides were investigated. These reactions provided the low-cost and controllable synthetic techniques to synthesize large scale and one-dimensional semiconducting metal silicides for thermoelectric applications.

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Pan, Hui, Yuan Ping Feng, Jianyi Lin, Chuan Jun Liu, and Thye Shen Wee. "Catalyst-Free Template-Synthesis of ZnO Nanopetals at 60 °C." Journal of Nanoscience and Nanotechnology 7, no. 2 (February 1, 2007): 696–99. http://dx.doi.org/10.1166/jnn.2007.140.

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We report successful growth of a new form of ZnO nanostructures, ZnO nanopetals at low temperature. This two-dimensional nanostructure is morphologically different from nanowalls. The flat and circularly edged nanopetals intersect each other. The thickness of nanopetals is uniform and about 30 nm. The nanostructure was produced using a simple catalyst-free chemical method based on anodic aluminum oxide (AAO) template. The growth temperature was 60 °C which is much lower than that required for growing ZnO nanowalls. The formation of the nanopetal network was induced by the porous alumina network on the surface of the AAO template.

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Saranathan, Vinodkumar, Jason D. Forster, Heeso Noh, Seng-Fatt Liew, Simon G. J. Mochrie, Hui Cao, Eric R. Dufresne, and Richard O. Prum. "Structure and optical function of amorphous photonic nanostructures from avian feather barbs: a comparative small angle X-ray scattering (SAXS) analysis of 230 bird species." Journal of The Royal Society Interface 9, no. 75 (May 9, 2012): 2563–80. http://dx.doi.org/10.1098/rsif.2012.0191.

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Non-iridescent structural colours of feathers are a diverse and an important part of the phenotype of many birds. These colours are generally produced by three-dimensional, amorphous (or quasi-ordered) spongy β-keratin and air nanostructures found in the medullary cells of feather barbs. Two main classes of three-dimensional barb nanostructures are known, characterized by a tortuous network of air channels or a close packing of spheroidal air cavities. Using synchrotron small angle X-ray scattering (SAXS) and optical spectrophotometry, we characterized the nanostructure and optical function of 297 distinctly coloured feathers from 230 species belonging to 163 genera in 51 avian families. The SAXS data provided quantitative diagnoses of the channel- and sphere-type nanostructures, and confirmed the presence of a predominant, isotropic length scale of variation in refractive index that produces strong reinforcement of a narrow band of scattered wavelengths. The SAXS structural data identified a new class of rudimentary or weakly nanostructured feathers responsible for slate-grey, and blue-grey structural colours . SAXS structural data provided good predictions of the single-scattering peak of the optical reflectance of the feathers. The SAXS structural measurements of channel- and sphere-type nanostructures are also similar to experimental scattering data from synthetic soft matter systems that self-assemble by phase separation. These results further support the hypothesis that colour-producing protein and air nanostructures in feather barbs are probably self-assembled by arrested phase separation of polymerizing β-keratin from the cytoplasm of medullary cells. Such avian amorphous photonic nanostructures with isotropic optical properties may provide biomimetic inspiration for photonic technology.

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Gupta, N., G. F. Alapatt, R. Podila, R. Singh, and K. F. Poole. "Prospects of Nanostructure-Based Solar Cells for Manufacturing Future Generations of Photovoltaic Modules." International Journal of Photoenergy 2009 (2009): 1–13. http://dx.doi.org/10.1155/2009/154059.

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We present a comprehensive review on prospects for one-, two-, or three-dimensional nanostructure-based solar cells for manufacturing the future generation of photovoltaic (PV) modules. Reducing heat dissipation and utilizing the unabsorbed part of the solar spectrum are the key driving forces for the development of nanostructure-based solar cells. Unrealistic assumptions involved in theoretical work and the tendency of stretching observed experimental results are the primary reasons why quantum phenomena-based nanostructures solar cells are unlikely to play a significant role in the manufacturing of future generations of PV modules. Similar to the invention of phase shift masks (to beat the conventional diffraction limit of optical lithography) clever design concepts need to be invented to take advantage of quantum-based nanostructures. Silicon-based PV manufacturing will continue to provide sustained growth of the PV industry.

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Wu, Shiyun, Kaimin Fan, Minpin Wu, and Guangqiang Yin. "Two-dimensional MnO2/graphene hybrid nanostructures as anode for lithium ion batteries." International Journal of Modern Physics B 30, no. 27 (October 17, 2016): 1650208. http://dx.doi.org/10.1142/s0217979216502088.

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Using density functional theory, we have investigated the adsorption and diffusion of lithium on the two-dimensional MnO2/graphene hybrid nanostructures. The simulation results show that the adsorption energy is increased compared with pure graphene and monolayer MnO2. At the same time, the diffusion barrier is greatly reduced as lithium diffuses on the graphene side. The results indicate that the MnO2/graphene hybrid nanostructure can be used as a good anode material for lithium ion batteries.

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Mohamed, Ruziana, Zuraida Khusaimi, A. N. Afaah, Aadila Aziz, A. K. Shafura, Kevin Alvin Eswar, H. Mamat, and M. Rusop. "Progress in ZnO Nanostructure for Sensing Based Using Low Temperature Method." Advanced Materials Research 1109 (June 2015): 415–18. http://dx.doi.org/10.4028/www.scientific.net/amr.1109.415.

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Semiconductor ZnO nanostructure with low dimension for gas sensing has been studied due to its features such as good sensitivity, selectivity and show fast response in gas sensing detection. This attractive material could be growth in a variety nanostructure such as one-dimensional nanostructure eg; the nanorods, nanowire, nanobelts and nanotubes and two-dimensional (2D) eg; nanosheet, nanodisk and nanoflakes. ZnO can also be tuned to perform a mixture of nanostructure to improve the performance of its detection. This paper provides the report in synthesis of ZnO nanostructure with a simple method at low temperature for sensor application.

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Su, Yi, Xiao Ping Zou, Xiang Min Meng, and Gong Qing Teng. "2-D ZnO Nanostructures on Aluminum by Solution Method." Advanced Materials Research 123-125 (August 2010): 607–10. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.607.

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Two-dimensional ZnO nanostructures with various morphologies were synthesized on aluminum by solution method at 90°C. In our experiment, 0.1M zinc chloride (ZnCl2) was used as a ZnO precursor, and different volume of ammonia solution (25％) was added to the solution. We characterize the morphology and nanostructure of 2-D ZnO nanostructures and study the growth mechanisms of these 2-D structures. It should be noted that the existence of Cl﹣ plays an important role on the formation of 2-D structures.

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Quan, Jun, Ying Tian, and Le Xi Shao. "Study on the Spread of the Energy Gap in Nanostructure System." Advanced Materials Research 194-196 (February 2011): 436–41. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.436.

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We present a discussion of the size-, potential-dependence of the confinement energy in the nanostructure, as well the blue shift due to quantum confinement effect. In this case, we solve the Schrödinger equation by employing two simple models with one-dimensional periodic crystal potential. Results show that the confinement energy increases abruptly as the size of nanostructures decreases. Importantly, the confinement energy no longer strictly follows the size-dependent inverse square formula given by Brus. Furthermore, the band gap and blue shift depend on the crystal potential in the nanostructure, and the confinement energy decreases with the increase of the potential. We also find that the surface bond constriction plays an important role of the confinement energy.

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Meor, Yusoff M. S., E. M. Mahdi, Muslimin Masliana, and Paulus Wilfred. "Role of Alkaline Fusion in the Growth of Sodium Titanite Nanostructures from Rutile Mineral." Journal of Nano Research 21 (December 2012): 77–82. http://dx.doi.org/10.4028/www.scientific.net/jnanor.21.77.

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The paper presents a study on the use of alkaline fusion to produce nanostructured sodium titanate from rutile mineral. The spherical structure of the micron-sized starting material changed and transformed to a two-dimensional nanostructure after the alkaline fusion process. After 7 hours dissolution with 30% NaOH, the growth of sodium titanate nanorod is observed, and after undergoing prolonged dissolution, nanowires, with an average diameter of 20-40 nm and a length of 1-4 µm are formed. The study also showed that using 0.1M HCl to wash the titanate complex results in a sodium titanate that is free from NaOH residue, although at higher molarities, the nanostructure will collapse, and spherical grains formed. The important role of alkaline fusion in this hydrothermal process is that it will reduce dissolution time, while NaOH concentration is required for the growth of nanostructured sodium titanate.

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Wu, Jian Fang, Hua Zhi Gu, and Lin Sheng Kou. "Formation of Carbon with One-Dimensional Nanostructure on the Surface of Graphite Coated by Ni-Salt." Advanced Materials Research 412 (November 2011): 374–77. http://dx.doi.org/10.4028/www.scientific.net/amr.412.374.

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In this paper, the catalyst precursors were coated on the surface of natural flake graphite with micron size by liquid coating method. Carbon with one-dimensional nanostructures formed on the surface of graphite after the heat treatment of the mixture of phenolic resin and coated graphite. The effects of the forms and amounts of catalyst precursors and the temperature on the formation of carbon with one-dimensional nanostructures were studied. And the thermal conductivities of the samples were measured. The results showed that the catalyst precursor with the form of NiO would be better. And the optimum amounts of the catalyst precursor were 1mass % ~2 mass % of resin. It was not conducive to the reaction when the temperature was too low or too high, but 1100°C was appropriate. The thermal conductivities of samples were increasing with the increase of the qualities of carbon with one-dimensional nanostructure.

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Nicolosi, Valeria. "Processing and characterisation of two-dimensional nanostructures." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C510. http://dx.doi.org/10.1107/s2053273314094893.

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Low-dimensional nanostructured materials such as organic and inorganic nanotubes, nanowires and platelets are potentially useful in a number of areas of nanoscience and nanotechnology due to their remarkable mechanical, electrical and thermal properties. However difficulties associated with their lack of processability have seriously hampered both. In the last few years dispersion and exfoliation methods have been developed and demonstrated to apply universally to 1D and 2D nanostructures of very diverse nature, offering a practical means of processing the nanostructures for a wide range of innovative technologies. Among the first materials to have benefitted most from these advances are carbon nanotubes [6] and more recently graphene. Recently this work has been extended to boron nitride and a wide range of two-dimensional transition metal chalcogenides. These are potentially important because they occur in >40 different types with a wide range of electronic properties, varying from metallic to semiconducting. To make real applications truly feasible, however, it is crucial to fully characterize the nanostructures on the atomic scale and correlate this information with their physical and chemical properties. Advances in aberration-corrected optics in electron microscopy have revolutionised the way to characterise nano-materials, opening new frontiers for materials science. With the recent advances in nanostructure processability, electron microscopes are now revealing the structure of the individual components of nanomaterials, atom by atom. Here we will present an overview of very different low-dimensional materials issues, showing what aberration-corrected electron microscopy can do to answer materials scientists' questions. Particular emphasis will be given to the investigation of hexagonal boron nitride (hBN), molybdenum disulfide (MoS2), and tungsten disulfide (WS2) and the study of their structure, defects, stacking sequence, vacancies and low-atomic number individual adatoms. The analyses of the h-BN data showed that majority of nanosheets retain bulk stacking. However several of the images displayed stacking different from the bulk. Similar, to 2D h-BN, images of MoS2 and WS2 have shown the stacking previously unobserved in the bulk. This novel stacking consists of Mo/W stacked on the top each other in the consecutive layers.

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Zhang, Zheng, Zhuo Kang, Qingliang Liao, Xiaomei Zhang, and Yue Zhang. "One-dimensional ZnO nanostructure-based optoelectronics." Chinese Physics B 26, no. 11 (October 2017): 118102. http://dx.doi.org/10.1088/1674-1056/26/11/118102.

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LU, PAI, and DONGFENG XUE. "GROWTH OF ONE-DIMENSIONAL MnO2 NANOSTRUCTURE." Modern Physics Letters B 23, no. 31n32 (December 30, 2009): 3835–41. http://dx.doi.org/10.1142/s0217984909021892.

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Large scale MnO 2 nanorods were controllably synthesized from the inexpensive precursors (e.g., manganese acetate, ammonium persulfate) via a facile one-step low temperature hydrothermal strategy. The crystal phase and microscopic morphology of the as-prepared MnO 2 nanorods were characterized by X-ray powder diffraction (XRD) and scanning electron microscope (SEM). Through investigating the morphology evolution of MnO 2 products in the whole synthesis process, a novel growth mechanism of these MnO 2 nanorods was proposed, which may be efficiently extended to other material systems as a general approach towards one-dimensional nanostructures. The obtained MnO 2 nanorods may have potential applications in Li -ion batteries and supercapacitors.

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Cheng, Joy Y., Feng Zhang, Vivian P. Chuang, Anne M. Mayes, and Caroline A. Ross. "Self-Assembled One-Dimensional Nanostructure Arrays." Nano Letters 6, no. 9 (September 2006): 2099–103. http://dx.doi.org/10.1021/nl061563x.

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Gadomskii, O. N., and A. S. Shalin. "Dimensional magnetic resonances in nanostructure systems." Journal of Communications Technology and Electronics 52, no. 2 (February 2007): 206–11. http://dx.doi.org/10.1134/s1064226907020106.

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Li, Jia Ye, Jin Feng Zhu, and Qing H. Liu. "Tunable Properties of Three-Dimensional Graphene-Loaded Plasmonic Absorber Using Plasmonic Nanoparticles." Materials Science Forum 860 (July 2016): 29–34. http://dx.doi.org/10.4028/www.scientific.net/msf.860.29.

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We demonstrate a three-dimensional nanostructure design by combining graphene and conventional plasmonic nanostructures, to achieve the high absorbance in the visible region. Furthermore, the peak position and bandwidth of graphene absorption spectra are tunable in a wide wavelength range through a specific structural configuration. Comparing the results of two structures which is based on different materials, Gold and Silver. The structure made of Silver present a better performance. These results imply that graphene in combination with plasmonic perfect absorbers have a promising potential for developing advanced nanophotonic devices.

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Soopy, Abdul Kareem K., Zhaonan Li, Tianyi Tang, Jiaqian Sun, Bo Xu, Chao Zhao, and Adel Najar. "In(Ga)N Nanostructures and Devices Grown by Molecular Beam Epitaxy and Metal-Assisted Photochemical Etching." Nanomaterials 11, no. 1 (January 7, 2021): 126. http://dx.doi.org/10.3390/nano11010126.

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This review summarizes the recent research on nitride nanostructures and their applications. We cover recent advances in the synthesis and growth of porous structures and low-dimensional nitride nanostructures via metal-assisted photochemical etching and molecular beam epitaxy. The growth of nitride materials on various substrates, which improves their crystal quality, doping efficiency, and flexibility of tuning performance, is discussed in detail. Furthermore, the recent development of In(Ga)N nanostructure applications (light-emitting diodes, lasers, and gas sensors) is presented. Finally, the challenges and directions in this field are addressed.

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Soopy, Abdul Kareem K., Zhaonan Li, Tianyi Tang, Jiaqian Sun, Bo Xu, Chao Zhao, and Adel Najar. "In(Ga)N Nanostructures and Devices Grown by Molecular Beam Epitaxy and Metal-Assisted Photochemical Etching." Nanomaterials 11, no. 1 (January 7, 2021): 126. http://dx.doi.org/10.3390/nano11010126.

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This review summarizes the recent research on nitride nanostructures and their applications. We cover recent advances in the synthesis and growth of porous structures and low-dimensional nitride nanostructures via metal-assisted photochemical etching and molecular beam epitaxy. The growth of nitride materials on various substrates, which improves their crystal quality, doping efficiency, and flexibility of tuning performance, is discussed in detail. Furthermore, the recent development of In(Ga)N nanostructure applications (light-emitting diodes, lasers, and gas sensors) is presented. Finally, the challenges and directions in this field are addressed.

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Gao, Feng, Qingyi Lu, and Sridhar Komarneni. "Gluconate controls one-dimensional growth of tellurium nanostructures." Journal of Materials Research 21, no. 2 (February 1, 2006): 343–48. http://dx.doi.org/10.1557/jmr.2006.0064.

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In this paper, we show for the first time that by using sodium gluconate-assisted solution route, fine, uniform, and single-crystalline tellurium nanorods and nanowires can be synthesized. Sodium gluconate is a green and safe chemical with strong chelating function, and this property may be useful in the fabrication of nanomaterials, especially one-dimensional (1D) nanomaterials. The sodium gluconate acts as both reducing agent and morphology-directing agent and by adjusting the experimental parameters, the lengths and the diameters of the tellurium nanorods could be further controlled in a certain range. This method is a simple and economical route for 1D nanostructure fabrication and might bring about a novel concept for the synthesis of 1D nanostructures with bio-ligand, sodium gluconate.

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BELHADI, M., A. KHATER, and K. MASCHKE. "TRANSMISSION OF PHONON MODES IN QUASI-ONE-DIMENSIONAL WAVEGUIDES VIA DOUBLE L-SHAPED JOINT NANOSTRUCTURES." Surface Review and Letters 11, no. 01 (February 2004): 87–97. http://dx.doi.org/10.1142/s0218625x04005950.

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The influence of a special class of atomic nanostructures embedded on a waveguide is analyzed for the scattering and transmission of elastic waves in quasi-one-dimensional multicanal waveguides. The quasi-one-dimensional waveguide is constructed of double chains of atoms, and the nanostructures consist of geometrical configurations, where the double chains are arranged to form several types of double L-shaped joints. Numerical results are presented for the three types of nanostructures, using the matching method. The theoretical approach allows us to calculate the reflection and the transmission probabilities as well as the average phonon conductance of the system along the waveguide. The results show that the transmission probabilities and the average conductance depend strongly on the type of geometrical joint nanostructure. The pronounced fluctuations in the transmission and conductance spectra as a function of the frequency can be understood as Fano resonances that result from the coherent coupling between the propagating modes and the localized vibrational modes induced by the nanostructures.

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Song, Jiaming, Bethany M. Hudak, Hunter Sims, Yogesh Sharma, T. Zac Ward, Sokrates T. Pantelides, Andrew R. Lupini, and Paul C. Snijders. "Homo-endotaxial one-dimensional Si nanostructures." Nanoscale 10, no. 1 (2018): 260–67. http://dx.doi.org/10.1039/c7nr06968e.

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Colombo, Paolo, and Giorgia Franchin. "Improving glass nanostructure fabrication." Science 380, no. 6648 (June 2, 2023): 895–96. http://dx.doi.org/10.1126/science.adi2747.

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Journal articles on the topic 'Dimensional Nanostructure'

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