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Artykuły w czasopismach na temat "Different Dimensional Nanostructure"
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Gupta, Vinod Kumar, Njud S. Alharbie, Shilpi Agarwal i Vladimir A. Grachev. "New Emerging One Dimensional Nanostructure Materials for Gas Sensing Application: A Mini Review". Current Analytical Chemistry 15, nr 2 (19.02.2019): 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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Yang, Ming, Xiaohua Chen, Zidong Wang, Yuzhi Zhu, Shiwei Pan, Kaixuan Chen, Yanlin Wang i Jiaqi Zheng. "Zero→Two-Dimensional Metal Nanostructures: An Overview on Methods of Preparation, Characterization, Properties, and Applications". Nanomaterials 11, nr 8 (23.07.2021): 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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Roy, Souradeep, Sourav Sain, Shikha Wadhwa, Ashish Mathur, Santosh Dubey i Susanta S. Roy. "Electrochemical impedimetric analysis of different dimensional (0D–2D) carbon nanomaterials for effective biosensing of L-tyrosine". Measurement Science and Technology 33, nr 1 (27.10.2021): 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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Basioli, Lovro, Krešimir Salamon, Marija Tkalčević, Igor Mekterović, Sigrid Bernstorff i Maja Mičetić. "Application of GISAXS in the Investigation of Three-Dimensional Lattices of Nanostructures". Crystals 9, nr 9 (13.09.2019): 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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Chen, Hsin-Yu, Yi-Hong Xiao, Lin-Jiun Chen, Chi-Ang Tseng i Chuan-Pei Lee. "Low-Dimensional Nanostructures for Electrochemical Energy Applications". Physics 2, nr 3 (11.09.2020): 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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Sousa Neto, Vicente de Oliveira, Gilberto Dantas Saraiva, A. J. Ramiro De Castro, Paulo de Tarso Cavalcante Freire i Ronaldo Ferreira Do Nascimento. "Electrodeposition of One-Dimensional Nanostructures: Environmentally Friendly Method". Journal of Composites and Biodegradable Polymers 10 (28.12.2022): 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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Pan, Hui, Yuan Ping Feng, Jianyi Lin, Chuan Jun Liu i Thye Shen Wee. "Catalyst-Free Template-Synthesis of ZnO Nanopetals at 60 °C". Journal of Nanoscience and Nanotechnology 7, nr 2 (1.02.2007): 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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Shaalan, Nagih M. "Promising Novel Barium Carbonate One-Dimensional Nanostructures and Their Gas Sensing Application: Preparation and Characterization". Chemosensors 10, nr 6 (17.06.2022): 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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Su, Yi, Xiao Ping Zou, Xiang Min Meng i Gong Qing Teng. "2-D ZnO Nanostructures on Aluminum by Solution Method". Advanced Materials Research 123-125 (sierpień 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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Manabeng, Matshidiso, Bernard S. Mwankemwa, Richard O. Ocaya, Tshwafo E. Motaung i Thembinkosi D. Malevu. "A Review of the Impact of Zinc Oxide Nanostructure Morphology on Perovskite Solar Cell Performance". Processes 10, nr 9 (7.09.2022): 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.
Rozprawy doktorskie na temat "Different Dimensional Nanostructure"
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"Photoluminescence studies of quasi-one-dimensional ZnSe nanostructures in different ambient gases". 2005. http://library.cuhk.edu.hk/record=b5892666.
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Ng Ching Man = 在不同氣體中一的維硒化鋅鈉米結構的發光研究 / 吳靜雯.Thesis (M.Phil.)--Chinese University of Hong Kong, 2005.
Includes bibliographical references (leaves 67-69).
Text in English; abstracts in English and Chinese.
Ng Ching Man = Zai bu tong qi ti zhong yi de wei xi hua xin na mi jie gou de fa guang yan jiu / Wu Jingwen.
Contents
Acknowledgements --- p.ii
Abstract --- p.iii
Chapter Chapter 1- --- Introduction --- p.1
Chapter 1.1 --- Background --- p.1
Chapter 1.2 --- Motivation --- p.3
Chapter 1.3 --- Our Work --- p.4
Chapter Chapter 2 - --- Experiment --- p.5
Chapter 2.1 --- MOCVD System --- p.5
Chapter 2.2 --- Metalorganic Sources --- p.5
Chapter 2.3 --- Substrates --- p.7
Chapter 2.4 --- Growth of ZnSe Nanowires --- p.7
Chapter 2.5 --- Sample Passivation --- p.8
Chapter 2.6 --- PL measurements --- p.8
Chapter 2.7 --- Ambient Gases --- p.9
Chapter 2.8 --- Gases Handling Apparatus --- p.9
Chapter 2.9 --- Ambient Gases and Laser Power Control in PL Measurements --- p.11
Chapter Chapter 3 - --- Characterization --- p.13
Chapter 3.1 --- Photoluminescence --- p.13
Chapter 3.2 --- Secondary Electron Microscopy --- p.14
Chapter 3.3 --- X-Ray diffraction --- p.15
Chapter Chapter 4 - --- Results --- p.16
Chapter 4.1 --- ZnSe Nanowires Grown on Si(100) --- p.16
Chapter 4.1.1 --- Morphology and Structure of the As Synthesized Sample --- p.16
Chapter 4.1.2 --- Morphology and Structure of the Sample after Passivation --- p.17
Chapter 4.2 --- Effect of Ambient Condition on Photoluminescence --- p.19
Chapter 4.2.1 --- PL in Vacuum Ambient --- p.20
Chapter 4.2.2 --- PL Spectra in different Ambient Gases --- p.21
Chapter 4.2.3 --- PL Reversibility --- p.23
Chapter 4.3 --- "Effect of Pressure, Concentration and Power of Excitation on the Photoluminescence of Nanowires" --- p.26
Chapter 4.3.1 --- Ambient Pressure --- p.27
Chapter 4.3.1.1 --- H2S --- p.27
Chapter 4.3.1.2 --- H2 --- p.30
Chapter 4.3.1.3 --- CO --- p.32
Chapter 4.3.2 --- Ambient Concentration --- p.33
Chapter 4.3.2.1 --- H2S --- p.33
Chapter 4.3.2.2 --- H2 --- p.36
Chapter 4.3.3 --- Excitation Power --- p.38
Chapter 4.3.3.1 --- H2S --- p.38
Chapter 4.3.3.2 --- H2 --- p.40
Chapter 4.3.3.3 --- CO --- p.41
Chapter Chapter 5 - --- Discussions --- p.42
Chapter 5.1 --- Quality of nanowires --- p.42
Chapter 5.2 --- Surface Reaction --- p.43
Chapter 5.2.1 --- Surface States --- p.43
Chapter 5.2.2 --- Gas-surface interaction --- p.46
Chapter 5.2.2.1 --- Physiosorption --- p.46
Chapter 5.2.2.2 --- Chemisorption --- p.47
Chapter 5.3 --- (NH4)2S passivation --- p.48
Chapter 5.3.1 --- Etching --- p.48
Chapter 5.3.2 --- (NH4)2S passivation --- p.48
Chapter 5.4 --- PL increase in Vacuum --- p.50
Chapter 5.5 --- Effects of different Gases --- p.50
Chapter 5.5.1 --- H2S --- p.50
Chapter 5.5.2 --- H2 --- p.53
Chapter 5.5.3 --- CO --- p.54
Chapter 5.5.4 --- Other explanations --- p.54
Chapter 5.6 --- The amount of Intensity Change --- p.56
Chapter 5.7 --- Rates of Adsorption and Desorption --- p.56
Chapter Chapter 6 - --- Conclusions --- p.58
Appendices --- p.60
Chapter I - --- Fitted parameter of the adsorption and desorption of H2S and CO --- p.60
Chapter II - --- Calculation of gas and photon fluxes --- p.65
References --- p.67
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Cheung, JASON. "Simulation of Engineered Nanostructured Thin Films". Thesis, 2009. http://hdl.handle.net/1974/1731.
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The invention of the Glancing Angle Deposition (GLAD) technique a decade ago enabled the fabrication of nanostructured thin films with highly tailorable structural, electrical, optical, and magnetic properties. Here a three-dimensional atomic-scale growth simulator has been developed to model the growth of thin film materials fabricated with the GLAD technique, utilizing the Monte Carlo (MC) and Kinetic Monte Carlo (KMC) methods; the simulator is capable of predicting film structure under a wide range of deposition conditions with a high degree of accuracy as compared to experiment. The stochastic evaporation and transport of atoms from the vapor source to the substrate is modeled as random ballistic deposition, incorporating the dynamic variation in substrate orientation that is central to the GLAD technique, and surface adatom diffusion is modeled as either an activated random walk (MC), or as energy dependent complete system transitions with rates calculated based on site-specific bond counting (KMC). The Sculptured Nanostructured Film Simulator (SNS) provides a three-dimensional physical prediction of film structure given a set of deposition conditions, enabling the calculation of film properties including porosity, roughness, and fractal dimension. Simulations were performed under various growth conditions in order to gain an understanding of the effects of incident angle, substrate rotation, tilt angle, and temperature on the resulting morphology of the thin film. Analysis of the evolution of film porosity during growth suggests a complex growth dynamic with significant variations with changes in tilt or substrate motion, in good agreement with x-ray reflectivity measurements. Future development will merge the physical structure growth simulator, SNS, with Finite-Difference Time-Domain (FDTD) electromagnetics simulation to allow predictive design of nanostructured optical materials.Thesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2009-03-31 13:22:11.843
Książki na temat "Different Dimensional Nanostructure"
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Lin, Nian, i Sebastian Stepanow. Designing low-dimensional nanostructures at surfaces by supramolecular chemistry. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533046.013.10.
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This article describes the use of supramolecular chemistry to design low-dimensional nanostructures at surfaces. In particular, it discusses the design strategies of two types of low-dimensional supramolecular nanostructures: structures stabilized by hydrogen bonds and structures stabilized by metal-ligand co-ordination interactions. After providing an overview of hydrogen-bond systems such as 0D discrete clusters, 1D chains, and 2D open networks and close-packed arrays, the article considers metal-co-ordination systems. It also presents experimental results showing that both hydrogen bonds and metal co-ordination offer protocols to achieve unique nanostructured systems on 2D surfaces or interfaces. Noting that the conventional 3D supramolecular self-assembly has generated a vast number of nanostructures revealing high complexity and functionality, the article suggests that 2D approaches can be applied to substrates with different symmetries as well as physical and chemical properties.
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Tsaousidou, M. Thermopower of low-dimensional structures: The effect of electron–phonon coupling. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.13.
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This article examines the effect of electron-phonon coupling on the thermopower of low-dimensional structures. It begins with a review of the theoretical approaches and the basic concepts regarding phonon drag under different transport regimes in two- and one-dimensional systems. It then considers the thermopower of two-dimensional semiconductor structures, focusing on phonon drag in semi-classical two-dimensional electron gases confined in semiconductor nanostructures. It also analyzes the influence of phonon drag on the thermopower of semiconductor quantum wires and describes the phonon-drag thermopower of doped single-wall carbon nanotubes. The article compares theory and experiment in order to demonstrate the role of phonon-drag and electron-phonon coupling in the thermopower in two and one dimensions.
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Nikolic, Branislav K., Liviu P. Zarbo i Satofumi Souma. Spin currents in semiconductor nanostructures: A non-equilibrium Green-function approach. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533046.013.24.
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This article examines spin currents and spin densities in realistic open semiconductor nanostructures using different tools of quantum-transport theory based on the non-equilibrium Green function (NEGF) approach. It begins with an introduction to the essential theoretical formalism and practical computational techniques before explaining what pure spin current is and how pure spin currents can be generated and detected. It then considers the spin-Hall effect (SHE), and especially the mesoscopic SHE, along with spin-orbit couplings in low-dimensional semiconductors. It also describes spin-current operator, spindensity, and spin accumulation in the presence of intrinsic spin-orbit couplings, as well as the NEGF approach to spin transport in multiterminal spin-orbit-coupled nanostructures. The article concludes by reviewing formal developments with examples drawn from the field of the mesoscopic SHE in low-dimensional spin-orbit-coupled semiconductor nanostructures.
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McGuiness, C. L., R. K. Smith, M. E. Anderson, P. S. Weiss i D. L. Allara. Nanolithography using molecular films and processing. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.23.
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This article focuses on the use of molecular films as building blocks for nanolithography. More specifically, it reviews efforts aimed at utilizing organic molecular assemblies in overcoming the limitations of lithography, including self-patterning and directed patterning. It considers the methods of patterning self-assembled organic monolayer films through soft-lithographic methods such as microcontact printing and nanoimprint lithography, through direct ‘write’ or ‘machine’ processes with a nanometer-sized tip and through exposure to electron or photon beams. It also discusses efforts to pattern the organic assemblies via the physicochemical self-assembling interactions, including patterning via phase separation of chemically different molecules and insertion of guest adsorbates into host matrices. Furthermore, it examines the efforts that have been made to couple patterned molecular assemblies with inorganic thin-film growth methods to form spatially constrained, three-dimensional thin films. Finally, it describes a hybrid self-assembly/conventional lithography (i.e. molecular rulers) approach to forming nanostructures.
Części książek na temat "Different Dimensional Nanostructure"
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Morgen, Per, J. Drews, Rajnish Dhiman i Peter Nielsen. "Nanostructured Materials in Different Dimensions for Sensing Applications". W Nanotechnological Basis for Advanced Sensors, 257–73. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0903-4_29.
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Tsuji, Nobuhiro, Shigenobu Ogata, Haruyuki Inui, Isao Tanaka i Kyosuke Kishida. "Proposing the Concept of Plaston and Strategy to Manage Both High Strength and Large Ductility in Advanced Structural Materials, on the Basis of Unique Mechanical Properties of Bulk Nanostructured Metals". W The Plaston Concept, 3–34. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7715-1_1.
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AbstractAdvanced structural materials are required to show both high strength and large ductility/toughness, but we have not yet acquired the guiding principle for that. The bulk nanostructured metals are polycrystalline metallic materials having bulky dimensions and average grain sizes smaller than 1 μm. Bulk nanostructured metals show very high strength compared with that of the coarse-grained counterparts, but usually exhibit limited tensile ductility, especially small uniform elongation below a few %, due to the early plastic instability. On the other hand, we have recently found that particular bulk nanostructured metals can manage high strength and large tensile ductility. In such bulk nanostructured metals, unusual deformation modes different from normal dislocation slips were unexpectedly activated. Unusual <c+a> dislocations, deformation twins with nano-scale thickness, and deformation-induced martensite nucleated from grain boundaries in the bulk nanostructured Mg alloy, high-Mn austenitic steel, and Ni-C metastable austenitic steel, respectively. Those unexpected deformation modes enhanced strain hardening of the materials, leading to high strength and large tensile ductility. It was considered that the nucleation of such unusual deformation modes was attributed to the scarcity of dislocations and dislocation sources in each recrystallized ultrafine grain, which also induced discontinuous yielding with clear yield drop universally recognized in bulk nanostructured metals having recrystallized structures. For discussing the nucleation of different deformation modes in atomistic scales, the new concept of plaston which considered local excitation of atoms under singular dynamic fields was proposed. Based on the findings in bulk nanostructured metals and the concept of plaston, we proposed a strategy for overcoming the strength-ductility trade-off in structural metallic materials. Sequential nucleation of different deformation modes would regenerate the strain-hardening ability of the material, leading to high strength and large tensile ductility. The strategy could be a guiding principle for realizing advanced structural materials that manage both high strength and large tensile ductility.
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Huang, Yi-June, i Chuan-Pei Lee. "Nanostructured Transition Metal Compounds as Highly Efficient Electrocatalysts for Dye-Sensitized Solar Cells". W Solar Cells [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94021.
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Nowadays, the requirement of energy increases every year, however, the major energy resource is fossil fuel, a limiting source. Dye-sensitized solar cells (DSSCs) are a promising renewable energy source, which could be the major power supply for the future. Recently, the transition metal component has been demonstrated as potential material for counter electrode of platinum (Pt)-free DSSCs owing to their excellent electrocatalytic ability and their abundance on earth. Furthermore, the transition metal components exist different special nanostructures, which provide high surface area and various electron transport routs during electrocatalytic reaction. In this chapter, transition metal components with different nanostructures used for the application of electrocatalyst in DSSCs will be introduced; the performance of electrocatalyst between intrinsic heterogeneous rate constant and effective electrocatalytic surface area are also be clarified. Final, the advantages of the electrocatalyst with different dimensions (i.e., one to three dimension structures) used in DSSCs are also summarized in the conclusion.
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Kavita i Pooja Rani. "Semiconductor Nanostructures and Synthesis Techniques". W Synthesis and Applications of Semiconductor Nanostructures, 1–28. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080117123040006.
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Semiconductor nanostructures show different properties compared to their bulk counterparts due to quantum confinement effects and enhanced surface-to-volume ratio with the reduction in particle size on nanoscale dimensions. This chapter introduces the nanomaterials, especially semiconductor nanostructures of various morphologies, quantum nanostructures (quantum dots, quantum wires and quantum wells) along with conventional 3D nanostructures. The present time is the introductory era of nanoscience and nanotechnology; synthesis of highly monodisperse nanostructures for device applications is a challenge for researchers and technocrats. This chapter discusses at length fascinatingly the bottom-up and top-down synthesis approaches along with the commonly used nanomaterial synthesis techniques, such as mechanical milling, lithography, electrospinning, template synthesis, chemical precipitation, sol-gel method, hydrothermal/solvothermal method, laser ablation, and other vapour processing methods.
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Murali, A. "Bioinspired Nanomaterials for Supercapacitor Applications". W Bioinspired Nanomaterials for Energy and Environmental Applications, 141–74. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901830-5.
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Energy storage devices have acquired great research attention in the fabrication of ultra-high efficient supercapacitors. In order to enhance the electrochemical performance of the supercapacitors, different electrodes have been fabricated using various nanomaterials with precisely controlled morphologies and interfaces. Nevertheless, the low-dimensional nanomaterials still suffer from the factors such as severe re-stacking, non-homogeneous aggregation, and low contacts during the processing and assembly. These bottle-neck problems essentially lead to the hindrance of transport of electrons and/or ions in the energy devices. In this direction, recently, the bioinspired nanomaterials are emerging as the potential candidates to overcome the said disadvantages of the chemically derived low dimensional nanomaterials. The well-aligned or highly oriented bioinspired nanostructures found to effectively promote the transport of electrons, facilitate the ion diffusions through the hierarchical pores and provide the large specific surface area for their interfacial interactions with the surroundings. Moreover, the nanoscale materials can be easily tuned or engineered for their physicochemical properties, thereby they can be potentially used in many device applications. In this context, this chapter is intended to highlight the recent progress in bioinspired nanomaterials towards developing the electrode materials for supercapacitors with the emphasize on the fundamental understandings between their structural properties and electrochemical performances. Finally, it concludes with an outlook on the next generation nanostructured electrodes to design the ultra high-efficient supercapacitors.
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Khan, Hasmat, Saswati Sarkar, Moumita Pal, Susanta Bera i Sunirmal Jana. "Indium Oxide Based Nanomaterials: Fabrication Strategies, Properties, Applications, Challenges and Future Prospect". W Indium [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94743.
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Nanostructured metal oxide semiconductors (MOS) in the form of thin film or bulk attract significant interest of materials researchers in both basic and applied sciences. Among these important MOSs, indium oxide (IO) is a valuable one due to its novel properties and wide range of applications in diversified fields. IO based nanostructured thin films possess excellent visible transparency, metal-like electrical conductivity and infrared reflectance properties. This chapter mainly highlights the synthesis strategies of IO based bulk nanomaterials with variable morphologies starting from spherical nanoparticles to nano-rods, nano-wires, nano-needles, nanopencils, nanopushpins etc. In addition, thin film deposition and periodic 1-dimensional (1D)/2-dimensional (2D) surface texturing techniques of IO based nanostructured thin films vis-à-vis their functional properties and applications have been discussed. The chapter covers a state-of-the-art survey on the fabrication strategies and recent advancement in the properties of IO based nanomaterials with their different areas of applications. Finally, the challenges and future prospect of IO based nanomaterials have been discussed briefly.
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Haußmann, A., L. M. Eng i S. Cherifi-Hertel. "Three-Dimensional Optical Analysis of Ferroelectric Domain Walls". W Domain Walls, 152–84. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198862499.003.0007.
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This chapter presents the latest results demonstrating the flexibility and sensitivity of optical methods for the investigation of the physical properties of DWs in 3D. Domain walls in ferroelectric materials are nanoscale interfaces separating regions with different orientation of the polarization. They have long been considered as imperfections affecting the overall macroscopic properties of ferroelectrics. However, the recently discovered rich and diverse local physical properties of ferroelectric DWs have transformed these domain boundary regions into individual nanostructures with significant fundamental interest and potentially viable application in nanoelectronic device components. This chapter emphasizes the important contribution of both nonlinear and linear optical microscopy in different geometries (transmission, reflection, and non-collinear geometry) to access the detailed morphology of ferroelectric domain walls, obtain their 3D profile, access their internal structure, and establish correlations with their electronic properties.
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A. Tabbakh, Thamer, Prashant Tyagi, Deepak Anandan, Michael J. Sheldon i Saeed Alshihri. "Boron Nitride Fabrication Techniques and Physical Properties". W Characteristics and Applications of Boron [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106675.
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The III-nitride semiconductors are known for their excellent extrinsic properties like direct bandgap, low electron affinity, and chemical and thermal stability. Among III-nitride semiconductors, boron nitride has proven to be a favorable candidate for common dimension materials in several crystalline forms due to its sp2- or sp3-hybridized atomic orbitals. Among all crystalline forms, hexagonal (h-BN) and cubic (c-BN) are considered as the most stable crystalline forms. Like carbon allotropes, the BN has been obtained in different nanostructured forms, e.g., BN nanotube, BN fullerene, and BN nanosheets. The BN nanosheets are a few atomic layers of BN in which boron and nitrogen are arranged in-planer in hexagonal form. The nanostructure sheets are used for sensors, microwave optics, dielectric gates, and ultraviolet emitters. The most effective and preferred technique to fabricate BN materials is through CVD. During the growth, BN formation occurs as a bottom-up growth mechanism in which boron and nitrogen atoms form a few layers on the substrate. This technique is suitable for high quality and large-area growth. Although a few monolayers of BN are grown for most applications, these few monolayers are hard to detect by any optical means as BN is transparent to a wide range of wavelengths. This chapter will discuss the physical properties and growth of BN materials in detail.
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Kumar Sur, Ujjal. "Nano Porous Anodic Aluminum Oxide: An Overview on its Fabrication and Potential Applications". W Recent Advances in Analytical Techniques: Volume 6, 140–63. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815124156123060006.
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The quick development in nanotechnology has raised the status of this modern technology owing to the decrease in the sizes of structures and devices. There has been considerable dispute concerning the future consequences of nanotechnology. Nanotechnology has the probable ability to design many new and novel materials and devices in smaller dimensions with broad-range applications in medicine, electronics and sustainable energy production. Nano porous anodic aluminum oxide (AAO) films consisting of self-organized hexagonal arrays of invariable parallel nanochannels have been widely applied as the building block to fabricate various functional nanostructures of different morphologies such as nanoparticles, nanowires and nanotubes. These functional nanostructures can be potentially utilized in various applications like magnetic storage media, optoelectronics, bio/chemical sensors, photonics and plasmonics. This chapter describes the different fabrication processes of AAO films in detail along with citation of a few interesting applications.
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Morari do Nascimento, Gustavo. "Two Spectroscopies as Main Source for Investigation of Polymer-Clay Materials". W Clay Science and Technology. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95825.
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In the recent years the synthesis and characterization of nanomaterials has been one of the most efficacious way to produce new materials with improved or completely new properties. The polymer-clay nanocomposites are one of the most interesting nanomaterials with the possibility to create a myriad of new materials with many applications. Lamellar materials are classified as two-dimensional (2D), because there are formed by platelets piled up in one crystallographic direction, as the graphite and clays. The synthesis of controlled dimensional nanostructures as well as the characterization of the intrinsic and potentially peculiar properties of these nanostructures are central themes in nanoscience. The study of different nanostructures has great potential to test and understand fundamental concepts about the role of particle dimensionality on their physicochemical properties. Among the various materials studied in the literature, undoubtedly, polymer-clay materials, especially conducting polymers with smectite clays, such as montmorillonites (MMT) are of particular note. Our group have paid many efforts in the characterization of nanomaterials by using powerful spectroscopic techniques to study both the guest and host in case of inclusion compounds, nanofibers, carbon allotropes or many phases present in polymer-clay nanocomposites. There are two central questions that it was possible to address in this study: (i) the molecular structure of the polymer is drastically changed inside the interlayer cavity of clay and (ii) by using the appropriate synthetic or heating route is possible to change the molecular structure of the confined polymer. In the follow lines, it is briefly told the main aspects of resonance Raman and X-ray absorption spectroscopies in the study of polymer-clay nanocomposites.
Streszczenia konferencji na temat "Different Dimensional Nanostructure"
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Gillet, Jean-Numa, Yann Chalopin i Sebastian Volz. "Thermal Design of Highly-Efficient Thermoelectric Materials With Atomic-Scale Three-Dimensional Phononic Crystals". W ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43538.
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Owing to their thermal insulating properties, superlattices have been extensively studied. A breakthrough in the performance of thermoelectric devices was achieved by using superlattice materials. The problem of those nanostructured materials is that they mainly affect heat transfer in only one direction. In this paper, the concept of canceling heat conduction in the three spatial directions by using atomic-scale three-dimensional (3D) phononic crystals is explored. A period of our atomic-scale 3D phononic crystal is made up of a large number of diamond-like cells of silicon atoms, which form a square supercell. At the center of each supercell, we substitute a smaller number of Si diamond-like cells by other diamond-like cells, which are composed of germanium atoms. This elementary heterostructure is periodically repeated to form a Si/Ge 3D nanostructure. To obtain different atomic configurations of the phononic crystal, the number of Ge diamond-like cells at the center of each supercell can be varied by substitution of Si diamond-like cells. The dispersion curves of those atomic configurations can be computed by lattice dynamics. With a general equation, the thermal conductivity of our atomic-scale 3D phononic crystal can be derived from the dispersion curves. The thermal conductivity can be reduced by at least one order of magnitude in an atomic-scale 3D phononic crystal compared to a bulk material. This reduction is due to the decrease of the phonon group velocities without taking into account that of the phonon average mean free path.
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Sebastine, I. M., i D. J. Williams. "Requirements for the Manufacturing of Scaffold Biomaterial With Features at Multiple Scales". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82515.
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Tissue engineering aims to restore the complex function of diseased tissue using cells and scaffold materials. Tissue engineering scaffolds are three-dimensional (3D) structures that assist in the tissue engineering process by providing a site for cells to attach, proliferate, differentiate and secrete an extra-cellular matrix, eventually leading cells to form a neo-tissue of predetermined, three-dimensional shape and size. For a scaffold to function effectively, it must possess the optimum structural parameters conducive to the cellular activities that lead to tissue formation; these include cell penetration and migration into the scaffold, cell attachment onto the scaffold substrate, cell spreading and proliferation and cell orientation. In vivo, cells are organized in functional tissue units that repeat on the order of 100 μm. Fine scaffold features have been shown to provide control over attachment, migration and differentiation of cells. In order to design such 3D featured constructs effectively understanding the biological response of cells across length scales from nanometer to millimeter range is crucial. Scaffold biomaterials may need to be tailored at three different length scales: nanostructure (<1μm), microstructure (<20–100μm), and macrostructure (>100μm) to produce biocompatible and biofunctional scaffolds that closely resemble the extracellular matrix (ECM) of the natural tissue environment and promote cell adhesion, attachment, spreading, orientation, rate of movement, and activation. Identification of suitable fabrication techniques for manufacturing scaffolds with the required features at multiple scales is a significant challenge. This review highlights the effect and importance of the features of scaffolds that can influence the behaviour of cells/tissue at different length scales in vitro to increase our understanding of the requirements for the manufacture of functional 3D tissue constructs.
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Yu, Choongho, Wanyoung Jang, Tobias Hanrath, Dohyung Kim, Zhen Yao, Brian Korgel, Li Shi, Zhong Lin Wang, Deyu Li i Arunava Majumdar. "Thermal and Thermoelectric Measurements of Low Dimensional Nanostructures". W ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47263.
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Low dimensional materials have unique thermal and thermoelectric properties that can be very different from their bulk counterparts. In a previous work, we and our collaborators have developed a microdevice for measuring thermal and thermoelectric properties of multiwall carbon nanotubes. Here, we used an improved design of the device for measuring single wall carbon nanotubes, Ge nanowires, and SnO2 nanobelts. These nanostructures are trapped between two adjacent symmetric silicon nitride membranes of the micro device using either a wet deposition method or in-situ chemical vapor deposition. The measurements provide the critically needed data of the unique thermophysical properties of these nanomaterials.
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Patra, Sabyasachi, Debasis Sen, Chhavi Agarwal, Ashok K. Pandey, S. Mazumder i A. Goswami. "Synthesis, characterisation and counterion dependent mesoscopic modifications of ionomer nanocomposites having different dimensional silver nanostructures". W SOLID STATE PHYSICS: PROCEEDINGS OF THE 57TH DAE SOLID STATE PHYSICS SYMPOSIUM 2012. AIP, 2013. http://dx.doi.org/10.1063/1.4790995.
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Buehler, Markus J. "Defining Nascent Bone by the Molecular Nanomechanics of Mineralized Collagen Fibrils". W ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12137.
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Here we focus on recent advances in understanding the deformation and fracture behavior of collagen, Nature’s most abundant protein material and the basis for many biological composites including bone, dentin or cornea. We show that it is due to the basis of the collagen structure that leads to its high strength and ability to sustain large deformation, as relevant to its physiological role in tissues such as bone and muscle. Experiment has shown that collagen isolated from different sources of tissues universally displays a design that consists of tropocollagen molecules with lengths of approximately 300 nanometers. Using a combination of theoretical analyses and multi-scale modeling, we have discovered that the characteristic structure and characteristic dimensions of the collagen nanostructure is the key to the ability to take advantage of the nanoscale properties of individual tropocollagen molecules at larger scales, leading to a tough material at the micro- and mesoscale. This is achieved by arranging tropocollagen molecules into a staggered assembly at a specific optimal molecular length scale. During bone formation, nanoscale mineral particles precipitate at highly specific locations in the collagen structure. These mineralized collagen fibrils are highly conserved, nanostructural primary building blocks of bone. By direct molecular simulation of the bone’s nanostructure, we show that it is due to the characteristic nanostructure of mineralized collagen fibrils that leads to its high strength and ability to sustain large deformation, as relevant to its physiological role, creating a strong and tough material. We present a thorough analysis of the molecular mechanisms of protein and mineral phases in deformation, and report discovery of a new fibrillar toughening mechanism that has major implications on the fracture mechanics of bone. Our studies of collagen and bone illustrate how hierarchical multi-scale modeling linking quantum chemistry with continuum fracture mechanics approaches can be used to develop predictive models of hierarchical protein materials. We conclude with a discussion of the significance of hierarchical multi-scale structures for the material properties and illustrate how these structures enable one to overcome some of the limitations of conventional materials design, combining disparate material properties such as strength and robustness.
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Lam, K. T. "Fractal Dimension and Multifractal Spectra of INGAN/GAN Self-Assembled Quantum Dots Films". W ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72012.
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The surface shape and microstructure of semiconductor thin films, especially nanometer thin films, greatly influence such physical characteristics as the electricity, magnetic and optics nature to the thin films, etc. In this work, we use the fractal dimension and multifractal spectra to study the surface morphology of annealed InGaN/GaN self-assembled quantum dot (SAQD) films. Samples used in this study were grown on (0001)-oriented sapphire (Al2O3) substrates in a vertical low-pressure metalorganic chemical vapor deposition (MOCVD) reactor with a high-speed rotation disk. The fractal dimension and multifractal spectra can be used to describe the influence of different annealing conditions on surface characterization. Fractal analysis reveals that both the average surface roughness and root-mean-square roughness of nanostructure surfaces decreased after thermal annealing. It can be seen that a smoother surface was obtained after an annealing temperature of 800°C, and it implies that the surface roughness of this case is minimum in all tests. The results of this paper also include a mathematical model to describe the observation of fractal and multifractal characteristics in semiconductor nanostructure films.
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Le, Khai Q., i Hiromi Okamoto. "Dissymmetry between left- and right-handed circularly polarized photoluminescence enhancement of plasmonic nanostructures". W JSAP-OSA Joint Symposia. Washington, D.C.: Optica Publishing Group, 2017. http://dx.doi.org/10.1364/jsap.2017.5a_a410_2.
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We report here strong dissymmetry between left- and right-handed circularly polarized photoluminescence enhancement (PLE) induced by two-dimensional chiral gold nanostructures, which can be utilized to provide circularly polarized luminescence. We employed the dye molecule IR-125 as an emitter whose photoluminescence was enhanced by a near-field interaction between the chiral plasmon and the molecule. The difference between the PLE factors for left- and right-handed circular polarizations induced by the near-field enhancement was correlated to the dissymmetry of left- and right-handed extinction of the gold nanostructures.
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Yang, Yang, Deyu Li, Youfei Jiang, Zhe Guan, Terry T. Xu i Juekuan Yang. "Measurement of the Intrinsic Thermal Conductivity of Individual Silicon Nanoribbons". W ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87665.
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One-dimensional semiconductor nanowires, which show strong size dependent properties, have attracted significant attention during the past decade. The small characteristic size and unique physical properties can lead to broad applications such as nanoelectronics, photonics, and energy conversion. As the most widely used semiconductor material, silicon nanostructures (e.g. Si nanowires/nanoribbons) have drawn a lot of interest. Significant amount of efforts have been taken to understand their thermal properties. Experimentally, there have been a few reports on the thermal conductivity (κ) of individual 1D silicon nanostructures. Li et al. [1] first acquired the thermal conductivity of individual Si nanowires of different diameters. Later, the thermal conductivity of thin Si nanowires [2] and rough Si nanowires [3] has been measured using the same techniques. However, in these studies, the measured thermal conductivity is an effective one, which includes the effects of the contact thermal resistance between the Si nanowire and the heat source/sink. These effects will lead to some uncertainties in the experimental data.
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Qian, Dong, i Qingjin Zheng. "Coarse-Grained Modeling and Simulation of Nanoscale Systems Based on Discrete Hyper-Elastic Model". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68088.
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The subject of developing equivalent continuum models from the atomistic models has attracted significant attention in recent years. An outstanding issue in extending the continuum model to smaller scales is the size effect. Such a size effect is intimately related to the discrete nature of the atomic structure and nonlocal interaction among the atoms. In many of the existing continuum approaches, discrete variables are introduced in the constitutive model to account for these non-continuum effects. In this paper, we present a discrete hyperelasticity model as an alternative. Our approach, however, is fundamentally different from the conventional approach in that it treats the concept of deformation mapping in the discrete sense. The resulting deformation measure is referred to as spatial secant and the corresponding material model is called the spatial secant model. We then formulate the potential energy density functional and derive stress-like measure based on the spatial secant. After a brief description on the formulation and its comparison with the classical hyper-elastic model, we show the application of this model to both low-dimensional carbon nanostructures and general three-dimensional nanostructures. The concept of geometric-exact mapping is discussed through the examples. Comparisons with full-scale molecular mechanics simulations are made to illustrate the robustness of this approach.
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Qu, Chuang, Shamus McNamara i Kevin Walsh. "Synthesis of Nano-Dots and Lines by Glancing Angle Deposition With Corrals". W ASME 2022 17th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/msec2022-83720.
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Abstract This paper introduces using GLancing Angle Deposition (GLAD) with corral seeds for synthesizing nanodots and nanolines. GLAD is an advanced physical vapor deposition technique for creating three dimensional nanostructures. GLAD is commonly combined with pre-determined seeds on the substrate to create periodic nanofeature arrays; the seeds are usually artificial nucleation sites to rearrange the deposition patterns. However, the concept of corral seeds is different: the incident vapor will be depositing both on and inside the sacrificial layer of the corrals that consist various shapes; the desired nanostructures are grown from the overlapped deposition areas inside the corrals while the substrate rotates, depending on the shape of the corrals, and eventually will be remaining on the substrate when the sacrificial layer of the corral seeds is removed. The thickness of the sacrificial corrals along with the incident angle of the vapor define the shadow areas and deposition areas inside the corrals on the substrate. In this paper, three types of corrals are introduced: circular corrals, dumbbell corrals, and line corrals. The different nanofeatures of nanodots, limited-length nanolines and wafer-length nanolines created by different shaped corrals are presented. The fabricated nanodots and nanolines are potentially used in various optical and sensing applications. The two-step fabrication process of preparing corrals and GLAD provides numerous benefits for the synthesis of the nanofeatures.