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Статті в журналах з теми "Novel Nano-structures"

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Автор: Grafiati

Опубліковано: 7 вересня 2023

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1

Majeed, Ali, Esam Alkaldy, Mohd Zainal, and Danial Nor. "Novel Memory Structures in QCA Nano Technology." 3D SCEEER Conference sceeer, no. 3d (July 1, 2020): 119–24. http://dx.doi.org/10.37917/ijeee.sceeer.3rd.17.

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Quantum-dot Cellular Automata (QCA) is a new emerging technology for designing electronic circuits in nanoscale. QCA technology comes to overcome the CMOS limitation and to be a good alternative as it can work in ultra-high-speed. QCA brought researchers attention due to many features such as low power consumption, small feature size in addition to high frequency. Designing circuits in QCA technology with minimum costs such as cells count and the area is very important. This paper presents novel structures of D-latch and D-Flip Flop with the lower area and cell count. The proposed Flip-Flop has SET and RESET ability. The proposed latch and Flip-Flop have lower complexity compared with counterparts in terms of cell counts by 32% and 26% respectively. The proposed circuits are designed and simulated in QCADesigner software.

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2

Sinha, Saion, Bo Gao, and Otto Zhou. "Synthesis of silicon nanowires and novel nano-dendrite structures." Journal of Nanoparticle Research 6, no. 4 (August 2004): 421–25. http://dx.doi.org/10.1007/s11051-004-1325-z.

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3

Tan, Miao Miao, Zi Yi Zhang, Lin Hui Zhao, and Jian Cheng Zhang. "Review of Fabrication Methods of Nanotube / Nanowire Devices." Advanced Materials Research 411 (November 2011): 427–31. http://dx.doi.org/10.4028/www.scientific.net/amr.411.427.

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With the development of nano materials, a novel research field of NEMS forms by combining nano materials, nano-structures and nano fabrication with MEMS. Carbon nanotube (CNT) is a kind of one-dimensional nano structures which has unique mechanical, electrical and chemical properties. Using CNTs, new nano-devices with new principle or high performance would be developed. This paper reviews the assembly methods of one dimensional nanostructure and analyzes the characteristics of various methods, which provides reference for the device manufacturing methods using nanotubes/nanowires.

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4

Lee, Hak Joo, Jae Hyun Kim, Ki Ho Cho, Seung Min Hyun, Jung Yup Kim, Young Eun Yoo, and Wan Doo Kim. "Adhesion Test of Nanostructured Materials by a Novel AFM Probe." Key Engineering Materials 353-358 (September 2007): 2253–56. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2253.

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We have developed a novel atomic force microscope (AFM) probe as a highly sensitive sensor and an application of the probe into various mechanical tests for characterizing micro/nanostructures. Using MEMS fabrication technique, we have designed and fabricated rhombus-shaped symmetric AFM probe. Adhesion forces between silicon tip and artificial nano-hair structures of cyclic olefin copolymer (COC) and polypropylene (PP) were measured using the probe with a flat tip. The results exhibited the usual characteristics of force-displacement curves of COC and PP nano-hair structures, in which a pull-off force was detected at the point of unloading. The average adhesion forces of the COC and PP hair structures are about 9.48 μN and 10.67 μN, respectively.

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5

Kitamura, Takayuki, Takashi Sumigawa, Kai Huang, Yabin Yan, and Licheng Guo. "Novel experimental contrivance on competitive cracking in multilayered nano-structures." Theoretical and Applied Fracture Mechanics 100 (April 2019): 319–27. http://dx.doi.org/10.1016/j.tafmec.2019.01.033.

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6

Saber, Osama, Abdullah Aljaafari, Sarah Asiri, and Khalid Batoo. "Designing Magnetic Layered Double Hydroxides and Two-Dimensional Magnetic Nano-Nets of Cobalt Ferrite through a Novel Approach." Applied Sciences 8, no. 11 (November 1, 2018): 2099. http://dx.doi.org/10.3390/app8112099.

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The present study has a dual aim of supporting magnetic nanoparticles over the nanolayers of LDHs and designing two-dimensional magnetic nano-nets of cobalt ferrite. In this trend, nanoparticles of CoFe2O4 were prepared and supported by Co-Fe LDH through urea hydrolysis. The nanolayered structures of Co-Fe LDH were confirmed by X-ray diffraction, energy-dispersive X-ray spectrometry, FT-IR spectra, thermal analyses, and transmission electron microscopy. In addition, they indicated that 13.2% CoFe2O4 were supported over Co-Fe LDH. Transformation of the nanolayered structures of Co-Fe LDH to nano-nets was achieved by the catalytic effect of the supported CoFe2O4 nanoparticles through solvent thermal technique. X-ray diffraction patterns and transmission electron microscopy images confirmed the transformation of the supported Co-Fe LDH to nano-nets of cobalt ferrite. In order to indicate the effect of the LDH for designing the nano-nets, nanoparticles of cobalt ferrite were prepared by the same technique without LDH. The magnetic behavior of the nano-nets and the supported Co-Fe LDH were measured and compared with the nanoparticles through vibrating sample magnetometer technique. The magnetic parameters indicated that the prepared nano-nets have ferromagnetic behavior and high coercivity. However, the prepared nanoparticles revealed a superparamagnetic state and low coercivity. The experimental results concluded that the incorporation of nanoparticles with nanowires into nano-net structures has been found to be an efficient way to improve their magnetic properties and prevent their agglomerations. Finally, layered double hydroxides are an important source for constructing magnetic nanolayered structures and nano-nets.

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7

Zhu, Zhiwei, Suet To, Kornel F. Ehmann, Gaobo Xiao, and Wule Zhu. "A novel diamond micro-/nano-machining process for the generation of hierarchical micro-/nano-structures." Journal of Micromechanics and Microengineering 26, no. 3 (February 4, 2016): 035009. http://dx.doi.org/10.1088/0960-1317/26/3/035009.

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8

Shoshani, Oriel, and Steven W. Shaw. "Resonant modal interactions in micro/nano-mechanical structures." Nonlinear Dynamics 104, no. 3 (April 5, 2021): 1801–28. http://dx.doi.org/10.1007/s11071-021-06405-3.

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AbstractThis paper considers nonlinear interactions between vibration modes with a focus on recent studies relevant to micro- and nanoscale mechanical resonators. Due to their inherently small damping and high susceptibility to nonlinearity, these devices have brought to light new phenomena and offer the potential for novel applications. Nonlinear interactions between vibration modes are well known to have the potential for generating a “zoo” of complicated bifurcation patterns and a wide variety of dynamic behaviors, including chaos. Here, we focus on more regular, robust, and predictable aspects of their dynamics, since these are most relevant to applications. The investigation is based on relatively simple two-mode models that are able to capture and predict a wide range of transient and sustained dynamical behaviors. The paper emphasizes modeling and analysis that has been done in support of recent experimental investigations and describes in full detail the analysis and attendant insights obtained from the models that are briefly described in the experimental papers. Standard analytical tools are employed, but the questions posed and the conclusions drawn are novel, as motivated by observations from experiments. The paper considers transient dynamics, response to harmonic forcing, and self-excited systems and describes phenomena such as extended coherence time during transient decay, zero dispersion response, and nonlinear frequency veering. The paper closes with some suggested directions for future studies in this area.

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9

Suwito, Galih R., Vladimir G. Dubrovskii, Zixiao Zhang, Weizhen Wang, Sofiane Haffouz, Dan Dalacu, Philip J. Poole, Peter Grutter, and Nathaniel J. Quitoriano. "Tuning the Liquid–Vapour Interface of VLS Epitaxy for Creating Novel Semiconductor Nanostructures." Nanomaterials 13, no. 5 (February 27, 2023): 894. http://dx.doi.org/10.3390/nano13050894.

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Controlling the morphology and composition of semiconductor nano- and micro-structures is crucial for fundamental studies and applications. Here, Si-Ge semiconductor nanostructures were fabricated using photolithographically defined micro-crucibles on Si substrates. Interestingly, the nanostructure morphology and composition of these structures are strongly dependent on the size of the liquid–vapour interface (i.e., the opening of the micro-crucible) in the CVD deposition step of Ge. In particular, Ge crystallites nucleate in micro-crucibles with larger opening sizes (3.74–4.73 μm2), while no such crystallites are found in micro-crucibles with smaller openings of 1.15 μm2. This interface area tuning also results in the formation of unique semiconductor nanostructures: lateral nano-trees (for smaller openings) and nano-rods (for larger openings). Further TEM imaging reveals that these nanostructures have an epitaxial relationship with the underlying Si substrate. This geometrical dependence on the micro-scale vapour–liquid–solid (VLS) nucleation and growth is explained within a dedicated model, where the incubation time for the VLS Ge nucleation is inversely proportional to the opening size. The geometric effect on the VLS nucleation can be used for the fine tuning of the morphology and composition of different lateral nano- and micro-structures by simply changing the area of the liquid–vapour interface.

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10

Takata, Masaki, and Makoto Sakata. "Structures of Novel Nano-Materials Determined by Synchrotron Radiation Powder Experiment." Nihon Kessho Gakkaishi 45, Supplement (2003): 10. http://dx.doi.org/10.5940/jcrsj.45.supplement_10.

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11

Che, Yuping, and Jin Zhai. "Application of novel nano materials/structures in photo-electric conversion systems." SCIENTIA SINICA Chimica 45, no. 3 (March 1, 2015): 262–82. http://dx.doi.org/10.1360/n032014-00258.

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12

Zhang, Niboqia, Linxiuzi Yu, Yan-Chun Li, Hong Liu, and Zhong-Yuan Lu. "Novel nano-patterned structures of mixed hairy nanoparticles in single layer." Polymer 192 (March 2020): 122295. http://dx.doi.org/10.1016/j.polymer.2020.122295.

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13

Netzer, Falko P. "“Small and beautiful” – The novel structures and phases of nano-oxides." Surface Science 604, no. 5-6 (March 2010): 485–89. http://dx.doi.org/10.1016/j.susc.2010.01.002.

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14

Hosseini, Morteza, Mohammad Reza Ganjali, Zahra Rafiei-Sarmazdeh, Farnoush Faridbod, Hassan Goldooz, Alireza Badiei, Parviz Nourozi, and Ghodsi Mohammadi Ziarani. "A novel Lu3+ fluorescent nano-chemosensor using new functionalized mesoporous structures." Analytica Chimica Acta 771 (April 2013): 95–101. http://dx.doi.org/10.1016/j.aca.2013.01.064.

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15

Ogata, Shuji, and Takahisa Kouno. "Hybrid Simulations for Desinging of Nano-Interfacial Structures." Solid State Phenomena 127 (September 2007): 57–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.57.

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There is growing demand to perform dynamic, atomistic computer-simulation of nano-scaled interfaces. For dynamic simulation of interesting processes at the nano-interfaces, we have been developing the hybrid simulation schemes by concurrently coupling the quantum description as the electronic density-functional theory and the classical description as the classical molecular dynamics. A quantum (QM) region composed of a relatively small number of atoms, is embedded with the novel buffered-cluster method in a classical (CL) region of atoms interacting through an empirical inter-atomic potential. The hybrid QM-CL simulation scheme is applied to various kinds of nano-processes including implantation of oxygen atoms to a Si slab relating to SIMOX technology.

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16

Kim, In-Hye, Jae-Seung Im, Mun-Hwan Lee, Bong Ki Min, Jun Sik Son, Min-Ho Hong, and Tae-Yub Kwon. "Formation of Nano/Micro Hierarchical Structures on Titanium Alloy Surface by a Novel Etching Solution." Journal of Nanoscience and Nanotechnology 20, no. 7 (July 1, 2020): 4529–32. http://dx.doi.org/10.1166/jnn.2020.17575.

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A new effective oxidative solution for titanium (Ti) surface etching was recently developed. The present in vitro study was aimed at determining the influence of shorter (than 240 min) treatment time on the surface characteristics of the Ti nano/micro hierarchical structures. Cylinder-shaped Ti grade 5 alloys were etched for 30, 60, 120, and 240 min at room temperature and cleaned successively with acetone, ethanol, and distilled water in an ultrasonic bath. The micro- and nanostructures, surface roughness, dynamic wettability, and the surface elemental composition of the etched surfaces were evaluated. Nano/micro hierarchical structures, composed of micro-pits and nano-channels, were formed on the Ti surface through simple immersion in the oxidative solution. The findings suggest that the 120-min immersion yielded significant enhancement in the roughness and wettability of the Ti surfaces.

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17

Skinner, Jack L., Jessica M. Andriolo, John P. Murphy, and Brandon M. Ross. "Electrospinning for nano- to mesoscale photonic structures." Nanophotonics 6, no. 5 (December 28, 2016): 765–87. http://dx.doi.org/10.1515/nanoph-2016-0142.

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AbstractThe fabrication of photonic and electronic structures and devices has directed the manufacturing industry for the last 50 years. Currently, the majority of small-scale photonic devices are created by traditional microfabrication techniques that create features by processes such as lithography and electron or ion beam direct writing. Microfabrication techniques are often expensive and slow. In contrast, the use of electrospinning (ES) in the fabrication of micro- and nano-scale devices for the manipulation of photons and electrons provides a relatively simple and economic viable alternative. ES involves the delivery of a polymer solution to a capillary held at a high voltage relative to the fiber deposition surface. Electrostatic force developed between the collection plate and the polymer promotes fiber deposition onto the collection plate. Issues with ES fabrication exist primarily due to an instability region that exists between the capillary and collection plate and is characterized by chaotic motion of the depositing polymer fiber. Material limitations to ES also exist; not all polymers of interest are amenable to the ES process due to process dependencies on molecular weight and chain entanglement or incompatibility with other polymers and overall process compatibility. Passive and active electronic and photonic fibers fabricated through the ES have great potential for use in light generation and collection in optical and electronic structures/devices. ES produces fiber devices that can be combined with inorganic, metallic, biological, or organic materials for novel device design. Synergistic material selection and post-processing techniques are also utilized for broad-ranging applications of organic nanofibers that span from biological to electronic, photovoltaic, or photonic. As the ability to electrospin optically and/or electronically active materials in a controlled manner continues to improve, the complexity and diversity of devices fabricated from this process can be expected to grow rapidly and provide an alternative to traditional resource-intensive fabrication techniques.

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18

Cheng, Shuai, Yamei Ding, Qing Chang, Shunuo Zhong, Wei Shen, Huiwu Mao, Xueting Zhai, et al. "Wash-induced multicolor tuning of carbon nano-dot/micro-belt hybrids with full recyclability and stable color convertibility." Nanoscale 11, no. 31 (2019): 14592–97. http://dx.doi.org/10.1039/c9nr04972j.

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19

Li, Yi, Yuyan Qin, Zhiyuan Ling, Xing Hu, and Yanhua Shen. "Unique AAO films with adjustable hierarchical microstructures." RSC Advances 5, no. 1 (2015): 136–39. http://dx.doi.org/10.1039/c4ra13076f.

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20

Wu, Fei, Pengke Huang, Haibin Luo, Jin Wang, Bin Shen, Qian Ren, Pei He, Hao Zheng, Liyang Zhang, and Wenge Zheng. "Novel lightweight open-cell polypropylene foams for filtering hazardous materials." RSC Advances 10, no. 30 (2020): 17694–701. http://dx.doi.org/10.1039/d0ra01499k.

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Lightweight polypropylene foams with similar geometries but different porous structures were prepared as filters for potentially hazardous materials via supercritical CO₂ extrusion foaming without the use of harmful reagents and the problems of floating micro-nano fibers.

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21

Wang, Nannan, Zhuxian Yang, Kunyapat Thummavichai, Fang Xu, Chenxi Hu, Hongmei Chen, Yongde Xia, and Yanqiu Zhu. "Novel graphitic carbon coated IF-WS2reinforced poly(ether ether ketone) nanocomposites." RSC Advances 7, no. 56 (2017): 35265–73. http://dx.doi.org/10.1039/c7ra06205b.

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Unique high performance thermoplastic PEEK ternary nanocomposites reinforced by nano graphitic carbon coated IF (inorganic fullerene-like)-WS₂have been prepared and their structures have been characterised by XRD, EDX and HR-TEM.

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22

Gu, Yang, and Xianghong Xu. "Novel Gradient Design and Simulation of Voronoi Structures." International Journal of Applied Mechanics 10, no. 07 (August 2018): 1850079. http://dx.doi.org/10.1142/s1758825118500795.

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The gradient design of a fine grain structure on the surface and coarse grain structure in the substrate gives nano metallic materials both high strength and plasticity. Inspired by the concept of gradient design of grain sizes in materials science, this paper shows the design of the gradient Voronoi polygonal honeycomb structure. The quasi-static uniaxial tensile deformation processes of both, gradient and uniform, Voronoi structures were studied and it was found that the gradient design of the honeycomb cell size greatly improves the tensile property and strain energy storage of the Voronoi structure.

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23

Abbasi, Mohammad Reza, Majid Karimi, and Mohammad Atai. "Modified POSS nano-structures as novel co-initiator-crosslinker: Synthesis and characterization." Dental Materials 37, no. 8 (August 2021): 1283–94. http://dx.doi.org/10.1016/j.dental.2021.04.012.

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24

Liao, Fenglin, Xin-Ping Wu, Jianwei Zheng, Meng-Jung Li, Ziyan Zeng, Xinling Hong, Anna Kroner, Youzhu Yuan, Xue-Qing Gong, and Shik Chi Edman Tsang. "Pd@Zn core–shell nanoparticles of controllable shell thickness for catalytic methanol production." Catalysis Science & Technology 6, no. 21 (2016): 7698–702. http://dx.doi.org/10.1039/c6cy01832g.

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25

Xu, Xiu Mei, Guy Vereecke, Erik van den Hoogen, Jens Smeers, Silvia Armini, Tinne Delande, and Herbert Struyf. "Wetting Challenges in Cleaning of High Aspect Ratio Nano-Structures." Solid State Phenomena 195 (December 2012): 235–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.195.235.

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In semiconductor fabrication, pattern collapse of high aspect ratio structures after wet processing has been a critical issue and attracted a lot of interest. On the other hand, very little attention is spent on the potential wetting issues as feature dimensions are continuously scaled down and novel materials with different wetting properties are used in new technology nodes. In this work we investigate the wettability of nanopatterned silicon substrates with different surface modifications.

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26

Teo, Selin H. G., Ming Bin Yu, N. Singh, and G. Q. Lo. "Nano-Photonic & Electronic Structures Pattern and Fabrication." Advanced Materials Research 74 (June 2009): 171–74. http://dx.doi.org/10.4028/www.scientific.net/amr.74.171.

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In this paper, techniques developed in the fabrication of nano-structures such as photonic gratings and vertical tube structures are presented for fabrication development that is applicable in the field of MEMS/NEMS technology – particularly for the optical integrated circuits [1] and sensor devices [2]. In such applications, not only is the resolution enhancements important, it is also often imperative that Critical Dimensions Uniformity (CDU) be kept as low as possible - since device performance often times scales directly with structural dimensions and its accuracy [3]. In this regard, techniques such as phase shift masking, off-axis illumination, optical proximity corrections, and also multiple patterning and resist ashing etc needs to be employed. This, not only increases the number and complexity of processing steps; it (at the same time) implicates other specifications such as illumination apertures, mask designs, optical proximity simulations, tool overlay tolerances etc. Coupled with additional non-CMOS requirements of atypical pattern shapes and densities, such as rings, horse-shoe shapes, sharp edges etc, a comprehensive study of the flexibilities involved with micro-lithography needs to be carried out for novel design prototyping. Here, the above described are illustrated, using examples of (i) a photonic gratings structure patterned with sharp edges, and (ii) a vertical-tube switch device structure, which are presented and discussed for their fabrication techniques and measurement results.

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27

Long, Nguyet Viet. "INVESTIGATION OF SURFACES OF NOVEL IRON OXIDES WITH GRAIN AND GRAIN BOUNDARY." Vietnam Journal of Science and Technology 56, no. 1A (May 4, 2018): 226. http://dx.doi.org/10.15625/2525-2518/56/1a/12527.

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Hierarchical nano/microscale α-Fe2O3 iron oxide particle system was prepared by an improved and modified polyol method with the use of NaBH4 agent with high heat treatment at 900 °C in air. Here, α-Fe2O3 iron oxide particles with different shapes were analyzed. The morphologies of the surfaces of α-Fe2O3 iron oxide particles show the oxide structures with the different nano/microscale ranges of grain sizes. In this research, we have found that grain and grain boundary growth limits can be determined in α-Fe2O3 iron oxide structure. This leads to the possibility of producing new iron oxide structures with distribution of desirable size grain and grain boundary. With α-Fe2O3 structure obtained, the magnetic properties of the α-Fe2O3 iron oxide system are different from those of previously reported studies. in national and international studies.Keywords: Iron iron oxides, α-Fe2O3, chemical polyol methods, heat treatment.

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28

Rani, Dipti, Oliver Roman Opaluch, and Elke Neu. "Recent Advances in Single Crystal Diamond Device Fabrication for Photonics, Sensing and Nanomechanics." Micromachines 12, no. 1 (December 30, 2020): 36. http://dx.doi.org/10.3390/mi12010036.

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In the last two decades, the use of diamond as a material for applications in nanophotonics, optomechanics, quantum information, and sensors tremendously increased due to its outstanding mechanical properties, wide optical transparency, and biocompatibility. This has been possible owing to advances in methods for growth of high-quality single crystal diamond (SCD), nanofabrication methods and controlled incorporation of optically active point defects (e.g., nitrogen vacancy centers) in SCD. This paper reviews the recent advances in SCD nano-structuring methods for realization of micro- and nano-structures. Novel fabrication methods are discussed and the different nano-structures realized for a wide range of applications are summarized. Moreover, the methods for color center incorporation in SCD and surface treatment methods to enhance their properties are described. Challenges in the upscaling of SCD nano-structure fabrication, their commercial applications and future prospects are discussed.

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29

Xiang, Zhen, Xiaojie Zhu, YanYan Dong, Xiang Zhang, Yuyang Shi, and Wei Lu. "Enhanced electromagnetic wave absorption of magnetic Co nanoparticles/CNTs/EG porous composites with waterproof, flame-retardant and thermal management functions." Journal of Materials Chemistry A 9, no. 32 (2021): 17538–52. http://dx.doi.org/10.1039/d1ta05181d.

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Анотація:

Attributed to rational-designed components and novel nano-micro structures, Co/CNTs/EG porous composites achieved an enhanced electromagnetic wave absorption with favorable waterproof, flame-retardant, and thermal management functions.

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30

Zhou, Mei, Wenhui Duan, Ying Chen, and Aijun Du. "Single layer lead iodide: computational exploration of structural, electronic and optical properties, strain induced band modulation and the role of spin–orbital-coupling." Nanoscale 7, no. 37 (2015): 15168–74. http://dx.doi.org/10.1039/c5nr04431f.

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Анотація:

Graphitic like layered materials exhibit intriguing electronic structures and thus the search for new types of two-dimensional (2D) monolayer materials is of great interest for developing novel nano-devices.

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31

Sun, Shuai, and Qiang Xu. "Fabricating a Novel Intragranular Microstructure for Al2O3/GdAlO3 Ceramic Composites." Materials 11, no. 10 (October 1, 2018): 1879. http://dx.doi.org/10.3390/ma11101879.

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Анотація:

In order to make the embryonic form of intragranular structure, the Al2O3/GdAlO3 system was selected due to its excellent mechanical properties. Gd2O3 and Al(NO3)3·9H2O were used as the starting materials. A co-precipitation method was used for the preparation of fine ceramics and applied to synthesize the nano-powder of GdAlO3 firstly. Then, the nano-powder of GdAlO3 was mixed with the precipitates by the second co-precipitation method. After drying and calcination, the compound powder with eutectic composition (77 mol % Al3+—23 mol % Gd3+) was fast sintered by using the spark plasma sintering technique. The results revealed that the phases of the sintered samples were Al2O3 and GdAlO3. The phases showed a homogeneous and interlaced distribution. All the matrix grains were submicron. The sizes of the intragranular structures were between 50 nm and 150 nm. Therefore, the intragranular structure displayed a novel mixture of nanometer–submicron and submicron–submicron types. The different intragranular structures all changed the fracture modes of Al2O3 grains from intergranular fracture to transgranular fracture.

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32

HE, YEDONG, KUN ZHANG, LIANGJIAN LI, and DEREN WANG. "NANO-/MICRO-COMPOSITE CERAMIC COATINGS PREPARED BY THERMAL PRESSURE FILTRATION OF SOL-GEL PAINTS." International Journal of Modern Physics B 20, no. 25n27 (October 30, 2006): 4649–54. http://dx.doi.org/10.1142/s0217979206041835.

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Анотація:

A novel coating technique, thermal pressure filtration of sol-gel paints (TPFSP), has been developed to prepare nano-/micro-composite ceramic coatings with controllable thickness, structure, and excellent high temperature properties. In this paper, the fabrication of two typical coatings, nano-/micro- Al 2 O 3- Y 2 O 3 composite coating and Al 2 O 3· SiO 2 fibers reinforced nano- ZrO 2-8wt.% Y 2 O 3 composite coating was demonstrated and their structures and properties were studied.

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Deepthi, Gurijala, and Madhavi Tatineni. "Quality of Signal Improvement in Prominent CNTFET Based Ternary Logic System for Futuristic Dielectric Inserted MLGNRs for Integrated Circuit Designs." ECS Journal of Solid State Science and Technology 11, no. 3 (March 1, 2022): 031003. http://dx.doi.org/10.1149/2162-8777/ac5a71.

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Booming VLSI technology has graciously facilitated down-scaling dimensions of on-chip devices and interconnects in integrated circuits (ICs) to nano-miniaturized scale. However, at nano-dimensions where added benefits of scaling are constrained by associated highly-dense on-chip nano-interconnect structures, their electro-migration effects and several limiting signal-integrity issues. These cumulatively affect the quality of signal (QoS) at output. Improving output QoS is essential for attaining faithful system performance. The present paper judiciously attempts to address as well as limit this graving issue and is successfully proven by obtained results. Firstly, different structures and their performance of futuristic graphene based multi-layer graphene nano ribbon (MLGNR) interconnect is investigated. These include basic MLGNR and dielectric inserted side contact MLGNR (DS-MLGNR). Secondly, to improve data rates and performance, efficient and novel carbon nanotube field effect transistors (CNTFETs) based ternary logic system is incorporated for the prominent nano-MLGNR interconnects. Thirdly, QoS enhancement of highly potential DS-MLGNR interconnect is proposed using active shielding technique. Finally, is chase to further enrich QoS, adaptive least mean square (LMS) equalization technique is used at the receiver. The proposed work comprising of futuristic novel graphene interconnects with efficient ternary logic system together with adaption of several QoS improvement techniques are magnificent and panacea solution to limiting nano-interconnects in advanced ICs. Several interesting and seminal analyses such as delay, power, power-delay product, crosstalk, eye-diagram are performed that supports the novelty and effectiveness of the proposed work. The vivid performance analyses have been implemented at nano-size 10 nm technology node.

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Adimule, Vinayak M. "Synthesis, Impedance And Current-Voltage Spectroscopic Characterization Of Novel Gadolinium Titanate Nano Structures." Advanced Materials Letters 12, no. 6 (June 1, 2021): 21061638. http://dx.doi.org/10.5185/amlett.2021.061638.

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Li, Hong, Yu Zhang, Cheng Biao Wang, Zhi Jian Peng, and Xiu Li Fu. "Synthesis and Characterization of Novel Multipods-Branched Cd-Se-S Micro-/Nano-Structures." Solid State Phenomena 281 (August 2018): 819–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.819.

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Novel multipods-branched Cd-Se-S micro-/nanostructures (MNSs) were successfully prepared in a tube furnace by thermal evaporation under atmospheric pressure through using high-purity CdS and CdSe mixture powder with a molar ratio of 1:1 as evaporation source, high-purity Ar gas as carrier and protective gas, and mica wafer as substrate. Under the optimum condition, the evaporation temperature was 1100 °C, Ar gas flow rate was 200 sccm, and the distance between the evaporation source and substrate was 22 cm. The microstructure examination revealed that the length of the obtained branches was up to tens of microns and the diameter of the branches was of a few microns. The composition and crystal structure analyses indicated that, the chemical composition of the multipods-branched Cd-Se-S MNSs was CdSe0.86S0.14, which had a hexagonal structure and good crystallinity. The photoluminescence spectrum at room temperature displays an intrinsic emission peak around 620 nm. In addition, their growth might be controlled by a vapor-solid mechanism.

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Fu, Yabo, Yuanding Huang, Zhenzhong Liu, Renqing Guo, and Shufeng Li. "Mechanical behaviors of novel multiple principal elements CuAl10Fe5Ni5Mn1.2 wt% with micro-nano structures." Journal of Alloys and Compounds 843 (November 2020): 155993. http://dx.doi.org/10.1016/j.jallcom.2020.155993.

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Kim, Jae-Hun, Ali Mirzaei, Hyoun Woo Kim, and Sang Sub Kim. "Novel superamphiphobic surfaces based on micro-nano hierarchical fluorinated Ag/SiO 2 structures." Applied Surface Science 445 (July 2018): 262–71. http://dx.doi.org/10.1016/j.apsusc.2018.03.148.

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Wang, Shoukun, Jiajia Ning, Liyan Zhao, Bingbing Liu, and Bo Zou. "Facile synthesis and assembly of CuS nano-flakes to novel hexagonal prism structures." Journal of Crystal Growth 312, no. 14 (July 2010): 2060–64. http://dx.doi.org/10.1016/j.jcrysgro.2010.03.040.

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39

Wang, Yazhou, Bochu Wang, Guixue Wang, Tieying Yin, and Qingsong Yu. "A novel method for preparing electrospun fibers with nano-/micro-scale porous structures." Polymer Bulletin 63, no. 2 (April 18, 2009): 259–65. http://dx.doi.org/10.1007/s00289-009-0078-3.

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Yu, Haiqiang, Jinguo Han, Shiyu Li, Dongpo Zhao, Jinhui Wang, Yebing Tian, and Jieqiong Lin. "Hierachical micro/nano structures fabrication by a novel tri-axial piezoelectric servo system." Materials & Design 224 (December 2022): 111330. http://dx.doi.org/10.1016/j.matdes.2022.111330.

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41

Hokmabad, Vahideh Raeisdasteh, Soodabeh Davaran, Marziyeh Aghazadeh, Reza Rahbarghazi, Roya Salehi та Ali Ramazani. "Fabrication and characterization of novel ethyl cellulose-grafted-poly (ɛ-caprolactone)/alginate nanofibrous/macroporous scaffolds incorporated with nano-hydroxyapatite for bone tissue engineering". Journal of Biomaterials Applications 33, № 8 (16 січня 2019): 1128–44. http://dx.doi.org/10.1177/0885328218822641.

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The major challenge of tissue regeneration is to develop three dimensional scaffolds with suitable properties which would mimic the natural extracellular matrix to induce the adhesion, proliferation, and differentiation of cells. Several materials have been used for the preparation of the scaffolds for bone regeneration. In this study, novel ethyl cellulose-grafted-poly (ɛ-caprolactone) (EC-g-PCL)/alginate scaffolds with different contents of nano-hydroxyapatite were prepared by combining electrospinning and freeze-drying methods in order to provide nanofibrous/macroporous structures with good mechanical properties. For this aim, EC-g-PCL nanofibers were obtained with electrospinning, embedded layer-by-layer in alginate solutions containing nano-hydroxyapatite particles, and finally, these constructions were freeze-dried. The scaffolds possess highly porous structures with interconnected pore network. The swelling, porosity, and degradation characteristics of the EC-g-PCL/alginate scaffolds were decreased with the increase in nano-hydroxyapatite contents, whereas increases in the in-vitro biomineralization and mechanical strength were observed as the nano-hydroxyapatite content was increased. The cell response to EC-g-PCL/alginate scaffolds with/or without nano-hydroxyapatite was investigated using human dental pulp stem cells (hDPSCs). hDPSCs displayed a high adhesion, proliferation, and differentiation on nano-hydroxyapatite-incorporated EC-g-PCL/alginate scaffolds compared to pristine EC-g-PCL/alginate scaffold. Overall, these results suggested that the EC-g-PCL/alginate-HA scaffolds might have potential applications in bone tissue engineering.

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Yoshino, Masahiko, and Nobuyuki Moronuki. "Special Issue on Novel Fabrication Processes for Tailored Functional Materials and Surfaces." International Journal of Automation Technology 14, no. 2 (March 5, 2020): 147. http://dx.doi.org/10.20965/ijat.2020.p0147.

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The properties of a mechanical material depend not only on its chemical components but also on the micro/nano structures of its surface and interior. Attempts have been made in recent years to develop new surface/material functions through mechanical processes. For example, technologies to control various characteristics, such as friction, water repellency, and optical properties, have been developed by constructing micro/nano periodic structures on the surfaces of materials. Since these properties depend on the geometry of the surface morphology, micro/nano fabrication processes can produce a variety of properties. This indicates that the surface properties and material properties of portions of the materials can be controlled to reach optimal conditions required by machine product design. This technology is expected to lead to the advanced production of products integrating design, manufacturing, and materials in an organic way. Here, we call the materials and surfaces with their properties arbitrarily controlled in accordance with machine design “tailored functional materials and surfaces.” This special issue features various studies and reports related to tailored functional materials and surfaces, and it includes 12 related papers and a review. They cover processing technologies that create and control various surface functions, such as water repellency, friction, biological and chemical reactions, and optical properties. They indicate the possibilities and future of new precision processing technologies. We deeply appreciate all the authors and reviewers for their efforts and contributions. We also hope that this special issue will encourage further research on tailored functional surfaces.

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Ødegård, Ivar Andre, Julien Romann, Anita Fossdal, Arne Røyset, and Gabriella Tranell. "Synthesis and properties of silicon/magnesium silicon nitride diatom frustule replicas." J. Mater. Chem. A 2, no. 39 (2014): 16410–15. http://dx.doi.org/10.1039/c4ta03750b.

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Анотація:

A novel method for the conversion of diatom bio-silica structures into nano-porous 3D silicon/magnesium silicon nitride replicas utilising simultaneous metallothermic reduction and nitriding is described. Optical, chemical and structural characterization of the replicas is also presented.

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Méndez-Ramos, J., J. C. Ruiz-Morales, P. Acosta-Mora, and N. M. Khaidukov. "Infrared-light induced curing of photosensitive resins through photon up-conversion for novel cost-effective luminescent 3D-printing technology." Journal of Materials Chemistry C 4, no. 4 (2016): 801–6. http://dx.doi.org/10.1039/c5tc03315b.

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Cost-effective luminescent 3D-printing technology approach through infrared-laser-induced photon up-conversion in rare-earth-doped materials for “laser-writing” of luminescent 3D printed structures and envisioned applications in nano-photolithography.

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45

Wang, Hou Xiao, Wei Zhou, and Er Ping Li. "Focused Ion Beam Nano-Precision Machining for Analyzing Photonic Structures in Butterfly." Key Engineering Materials 447-448 (September 2010): 174–77. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.174.

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Nano-precision machining using focused ion beam (FIB) is widely applied in many fields. So far, FIB-based nanofabrication for specific nanoscale applications has become an interesting topic to realize more diversities for nano-construction. Through FIB machining, we can easily achieve the required nano- and micro-scale patterning, device fabrication, and preparation of experimental samples. Nowadays, there is an increasing trend to learn from nature to design novel multi-functional materials and devices. Thus, more interestingly, another advantage of FIB is that it can be conveniently used to analyze the natural photonic structures, e.g., those in the butterfly which exhibits amazing optical phenomena due to sub-wavelength structural color. Accordingly, in the present study, structural analyses for butterfly wings were carried out using FIB. It is found that the photonic structures for the backside and frontside of the butterfly wing studied differ considerably. The difference accounts for the different colors on the dorsal and ventral sides of butterfly wings.

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Ohteki, Takuro, Shun-ichi Sakai, and Naoya Tate. "Nano-Photonic Metrics: Fundamentals and Experimental Demonstration." Photonics 9, no. 8 (August 6, 2022): 551. http://dx.doi.org/10.3390/photonics9080551.

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As the popularity of Internet of Things (IoT) increases, there is a considerable demand for the improvement of physical security, owing to the increase in edge devices. However, fabrication and measurement techniques used by attackers are also improving continuously, and hence, it is becoming increasingly difficult to ensure the security of each device using conventional approaches. To counter variable attacks in this context, the concept of nano-photonic metrics has been proposed, which is based on a functional collaboration between existing physical security and near-field optical techniques. In this approach, the optical signals obtained from optical near-field interactions, which are induced between the target with nano-scale structures and the tip of the scanning probe as the reader, are defined as the unique features of each device to be authenticated. When attackers attempt spoofing, they must fabricate not only clones of original nano-scale structures but also the scanning probe; otherwise, they cannot impersonate regular users. Moreover, the estimation of the nano-scale structures of the target and the characteristics of the probe is typically a complex, inverse problem. Therefore, a novel authentication is expected to be performed. In this paper, we report the results of the quantitative evaluations of the performance from the viewpoint of physical security and the experimental verification of the practicality of the proposed approach.

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Herrera, Luis F., Duong D. Do, and Greg R. Birkett. "Characterization of Virtual Nano-Structures through the Use of Monte Carlo Integration." Advanced Materials Research 32 (February 2008): 275–78. http://dx.doi.org/10.4028/www.scientific.net/amr.32.275.

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The determination of the properties of porous solids remains an integral element to the understanding of adsorption, transport and reaction processes in new and novel materials. The advent of molecular simulation has led to an improved understanding and prediction of adsorption processes using molecular models. These molecular models have removed the constraints of traditional adsorption theories, which require rigid assumptions about the structure of a material. However, even if we possess a full molecular model of a solid, it is still desirable to define the properties of this solid in a standard manner with quantities such as the accessible volume, surface area and pore size distribution. This talk will present Monte Carlo integration methods for calculating these quantities in a physically meaningful and unambiguous way. The proposed methods for calculating the surface area and pore size distribution were tested on an array of idealised solid configurations including cylindrical and cubic pores. The method presented is adequate for all configurations tested giving confidence to its applicability to disordered solids. The method is further tested by using several different noble gas probe molecules. Finally, the results of this technique are compared against those obtained by applying the BET equation for a range of novel materials.

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Deng, Xiangying, and Yukio Kawano. "Terahertz Plasmonics and Nano-Carbon Electronics for Nano-Micro Sensing and Imaging." International Journal of Automation Technology 12, no. 1 (January 5, 2018): 87–96. http://dx.doi.org/10.20965/ijat.2018.p0087.

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Sensing and imaging with THz waves is an active area of modern research in optical science and technology. There have been a number of studies for enhancing THz sensing technologies. In this paper, we review our recent development of THz plasmonic structures and carbon-based THz imagers. The plasmonic structures have strong possibilities of largely increasing detector sensitivity because of their outstanding properties of high transmission enhancement at a subwavelength aperture and local field concentration. We introduce novel plasmonic structures and their performance, including a Si-immersed bull’s-eye antenna and multi-frequency bull’s-eye antennas. The latter part of this paper explains carbon-based THz detectors and their applications in omni-directional flexible imaging. The use of carbon nanotube films has led to a room-temperature, flexible THz detector and has facilitated the visualization of samples with three-dimensional curvatures. The techniques described in this paper can be used effectively for THz sensing and imaging on a micro- and nano-scale.

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Rostami, E., and A. Zare. "Synthesis of Novel Dinaphthosulfide,Aza, Oxa, Thia Lariats ContainingUrea and Thiourea Groups in the Side Chain and Their Nanostructures." E-Journal of Chemistry 8, s1 (2011): S7—S12. http://dx.doi.org/10.1155/2011/147482.

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Dinaphhosulfide aza, oxa, thia crown was prepared; its urea and thiourea derivatives were synthesized by the reaction with ethyl and 4-chlorophenyl isocyanate, ethyl and phenylisothiocyanate. Self-assembled structures are as micro and nano fibers and discs.

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50

Ren, Yingming, and Zhiyu Zhang. "Influences of Initial Surface Conditions on Response Characteristics of Amorphous Silicon Films to Nanosecond Laser Irradiation." Micromachines 12, no. 7 (July 9, 2021): 807. http://dx.doi.org/10.3390/mi12070807.

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Although laser-produced micro-/nano-structures have been extensively studied, the effects of the initial surface conditions on the formed micro-/nano-structures have rarely been investigated. In this study, through nanosecond pulsed laser irradiation of unpolished and polished amorphous silicon films, entirely different surface characteristics were observed. The effects of laser irradiation parameters, such as repetition frequency, beam overlap ratio, and scanning velocity, on the surface characteristics were investigated, followed by the characterization of surface roughness, energy-dispersive X-ray spectroscopy, and Raman spectroscopy of the irradiated surfaces. For the unpolished surface, novel micro-protrusions were generated after laser irradiation, whereas no such micro-protrusions were formed on the polished surface. The experimental results indicated that the height of the micro-protrusions could be tuned using laser irradiation parameters and that laser irradiation promoted the crystallization of the amorphous silicon film. Moreover, the formation mechanism of the micro-protrusions was linked to fluctuations of the solid–liquid interface caused by continuous laser pulse shocks at higher repetition frequencies. The findings of this study suggest important correlations between the initial surface conditions and micro-/nano-structure formation, which may enhance our fundamental understanding of the formation of micro-/nano-structures.

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