Relevant bibliographies by topics / Nanowire

Academic literature on the topic 'Nanowire'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 April 2024

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Journal articles on the topic "Nanowire"

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Kolmakov, Andrei, Xihong Chen, and Martin Moskovits. "Functionalizing Nanowires with Catalytic Nanoparticles for Gas Sensing Application." Journal of Nanoscience and Nanotechnology 8, no. 1 (January 1, 2008): 111–21. http://dx.doi.org/10.1166/jnn.2008.n10.

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Metal oxide semiconducting nanowires are among the most promising materials systems for use as conductometric gas sensors. These systems function by converting surface chemical processes, often catalytic processes, into observable conductance variations in the nanowire. The surface properties, and hence the sensing properties of these devices can be altered dramatically improving the sensitivity and selectivity, by the deposition of catalytic metal nanoparticles on the nanowire's surface. This leads not only to promising sensor strategies but to a route for understanding some of the fundamental science occurring on these nanoparticles and at the metal/nanowire junction. In particular studying these systems can lead to a better understanding of the influence of the catalyst particle on the electronic structure of the nanowire and its electron transport. This report surveys results obtained so far in this area. In particular, the comparative sensing performance of single quasi-1D chemiresistors (i.e., nanowires or nanobelts) before and after surface decoration with noble metal catalyst particles show significant improvement in sensitivity toward oxidizing and reducing gases. Moreover, one finds that the sensing mechanism can depend dramatically on the degree of metal coverage of the nanowire.
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Wu, Phillip M., Lars Samuelson, and Heiner Linke. "Toward 3D Integration of 1D Conductors: Junctions of InAs Nanowires." Journal of Nanomaterials 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/268149.

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A vision and one of the next challenges in nanoelectronics is the 3D integration of nanowire building blocks. Here we show that capillary forces associated with a liquid-air meniscus between two nanowires provides a simple, controllable technique to bend vertical nanowires into designed, interconnected assemblies. We characterize the electric nature of the junctions between crossed nanowires in a lateral geometry, which is one type of basic unit that can be found in interconnected-bent vertical nanowires. The crossed nanowire junction is capacitive in nature, and we demonstrate that one nanowire can be used to field effect gate the other nanowire, allowing for the possibility to develop extremely narrow conducting channels in nanowire planar or 3D electronic devices.
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Dunaevskiy M. S. and Alekseev P. A. "Elastic deformations distribution in laterally bent conical nanowires." Semiconductors 56, no. 7 (2022): 461. http://dx.doi.org/10.21883/sc.2022.07.54759.06.

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The elastic deformations in the conical nanowires are considered. An analytical expression was obtained for the distribution of elastic deformations along the length of the conical nanowire. It was found that at certain cone angles in nanowire there is an extended area of sufficiently high deformations comparable or even large than the deformation at the base of the nanowire. So, for example, when bending the conical (conical coefficient a=-0.7) nanowire with length L=1 μm and radius R=50 nm by Delta z=200 nm, the maximum deformation values are εxx,max=8%, while more than 95% of the nanowire is deformed by >3%. Keywords: nanowires, elastic deformations, conical nanowires, Young's modulus.
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Jeon, Seong Gi, Jae Yong Song, Ho Sun Shin, and Jin Yu. "Solid-State Formation of Intermetallic Compounds in Co-Sb Couple Nanowires." International Symposium on Microelectronics 2010, no. 1 (January 1, 2010): 000093–97. http://dx.doi.org/10.4071/isom-2010-ta3-paper5.

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Nanointerconnection technologies have attracted much attention for the future electrical interconnection in electronic packaging. Nanowire interconnection needs to form the intermetallic compounds (IMCs) between the nanowires, in order to effectively reduce the contact resistances. In this study, the couple nanowires of Co and Sb elements were selected to investigate the IMC formation in one dimensional confinement. The Co and Sb nanowires were electrochemically deposited into the anodic aluminum oxide templates, in sequence, which had the pore diameters of about 30 and 60 nm, respectively. Results show that the CoSb phase is formed between Co nanowire and Sb nanowire after heat-treatment at 773 K. The IMC formation was ascribed to the dominant diffusion of Sb atoms toward the Co nanowire. The fast diffusion of Sb atoms toward the Co nanowire resulted in the formation of Kirkendall voids between the IMC and Sb nanowires.
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Koblischka, Michael Rudolf, Anjela Koblischka-Veneva, XianLin Zeng, Essia Hannachi, and Yassine Slimani. "Microstructure and Fluctuation-Induced Conductivity Analysis of Bi2Sr2CaCu2O8+δ (Bi-2212) Nanowire Fabrics." Crystals 10, no. 11 (October 30, 2020): 986. http://dx.doi.org/10.3390/cryst10110986.

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Resistance measurements were performed on Bi2Sr2CaCu2O8+δ (Bi-2212) fabric-like nanowire networks or nanofiber mats in the temperature interval 3 K ≤T≤ 300 K. The nanowire fabrics were prepared by means of electrospinning, and consist of long (up to 100 μm) individual nanowires with a mean diameter of 250 nm. The microstructure of the nanowire network fiber mats and of the individual nanowires was thoroughly characterized by electron microscopy showing that the nanowires can be as thin as a single Bi-2212 grain. The polycrystalline nanowires are found to have a texture in the direction of the original polymer nanowire. The overall structure of the nanofiber mats is characterized by numerous interconnects among the nanowires, which enable current flow across the whole sample. The fluctuation-induced conductivity (excess conductivity) above the superconducting transition temperature, Tc, was analyzed using the Aslamzov-Larkin model. Four distinct fluctuation regimes (short-wave, two-dimensional, three-dimensional and critical fluctuation regimes) could be identified in the Bi-2212 nanowire fabric samples. These regimes in such nanowire network samples are discussed in detail for the first time. Based on this analysis, we determine several superconducting parameters from the resistance data.
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Sun, Yan Long, Li Min Dong, Tao Jiang, Cao Guo, and Xiao Qi Zhang. "Effection of Additive on Aluminum Nitride Nano-Wire Synthesis by Double Decomposition Method." Advanced Materials Research 744 (August 2013): 428–31. http://dx.doi.org/10.4028/www.scientific.net/amr.744.428.

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An method for making AlN(aluminum nitride) nanowires by double decomposition, and the effection of additives was described. Future more, the growth mechanism of AlN nanowire synthesis with addictive were analyzed. AlN nanowire were synthesis by he AlCl3 and NaN3 in stainless steel cauldron without solvent and using Mg and Zn as additive. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study characters of the AlN nanowire. It is shown that the process can produce AlN nanowire with mean diameters ranging from 50 to 100 nm at 450°C. The additive has effective facilitated on the synthesis of aluminum nitride nanowires, can improve the properties of aluminum nitride nanowire, minish the average diameter of aluminum nitride nanowires.
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Pereira, Alejandro, Guidobeth Sáez, Eduardo Saavedra, and Juan Escrig. "Tunable Magnetic Properties of Interconnected Permalloy Nanowire Networks." Nanomaterials 13, no. 13 (June 29, 2023): 1971. http://dx.doi.org/10.3390/nano13131971.

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In this study, we investigate the magnetic properties of interconnected permalloy nanowire networks using micromagnetic simulations. The effects of interconnectivity on the hysteresis curves, coercivity, and remanence of the nanowire networks are analyzed. Our results reveal intriguing characteristics of the hysteresis curves, including nonmonotonic behaviors of coercivity as a function of the position of horizontal nanowires relative to vertical nanowires. By introducing horizontal nanowires at specific positions, the coercivity of the nanowire networks can be enhanced without altering the material composition. The normalized remanence remains relatively constant regardless of the position of the horizontal wires, although it is lower in the interconnected nanowire arrays compared to nonconnected arrays. These findings provide valuable insights into the design and optimization of nanowire networks for applications requiring tailored magnetic properties.
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Khurshid, Hafsa, Rahana Yoosuf, Bashar Afif Issa, Atta G. Attaelmanan, and George Hadjipanayis. "Tuning Easy Magnetization Direction and Magnetostatic Interactions in High Aspect Ratio Nanowires." Nanomaterials 11, no. 11 (November 12, 2021): 3042. http://dx.doi.org/10.3390/nano11113042.

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Cobalt nanowires have been synthesized by electrochemical deposition using track-etched anodized aluminum oxide (AAO) templates. Nanowires with varying spacing-to-diameter ratios were prepared, and their magnetic properties were investigated. It is found that the nanowires’ easy magnetization direction switches from parallel to perpendicular to the nanowire growth direction when the nanowire’s spacing-to-diameter ratio is reduced below 0.7, or when the nanowires’ packing density is increased above 5%. Upon further reduction in the spacing-to-diameter ratio, nanowires’ magnetic properties exhibit an isotropic behavior. Apart from shape anisotropy, strong dipolar interactions among nanowires facilitate additional uniaxial anisotropy, favoring an easy magnetization direction perpendicular to their growth direction. The magnetic interactions among the nanowires were studied using the standard method of remanence curves. The demagnetization curves and Delta m (Δm) plots showed that the nanowires interact via dipolar interactions that act as an additional uniaxial anisotropy favoring an easy magnetization direction perpendicular to the nanowire growth direction. The broadening of the dipolar component of Δm plots indicate an increase in the switching field distribution with the increase in the nanowires’ diameter. Our findings provide an important insight into the magnetic behavior of cobalt nanowires, meaning that it is crucial to design them according to the specific requirements for the application purposes.
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Rai, Rajesh K., and Chandan Srivastava. "Nonequilibrium Microstructures for Ag–Ni Nanowires." Microscopy and Microanalysis 21, no. 2 (February 6, 2015): 491–97. http://dx.doi.org/10.1017/s1431927615000069.

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AbstractThis work illustrates that a variety of nanowire microstructures can be obtained either by controlling the nanowire formation kinetics or by suitable thermal processing of as-deposited nanowires with nonequilibrium metastable microstructure. In the present work, 200-nm diameter Ag–Ni nanowires with similar compositions, but with significantly different microstructures, were electrodeposited. A 15 mA deposition current produced nanowires in which Ag-rich crystalline nanoparticles were embedded in a Ni-rich amorphous matrix. A 3 mA deposition current produced nanowires in which an Ag-rich crystalline phase formed a backbone-like configuration in the axial region of the nanowire, whereas the peripheral region contained Ni-rich nanocrystalline and amorphous phases. Isothermal annealing of the nanowires illustrated a phase evolution pathway that was extremely sensitive to the initial nanowire microstructure.
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Aish, Mohamed Mahmud, and Mikhail D. Starostenkov. "Deformation and Fracture of Metallic Nanowires." Solid State Phenomena 258 (December 2016): 277–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.258.277.

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A many-body interatomic potential for metallic nanowires within the second-moment approximation of the tight-binding model (the Cleri-Rosato potential) was employed to carry out three dimensional molecular dynamics simulations. Molecular dynamics simulation results for metallic nanowires at various temperature are presented. The stress–time and stress length curves for nanowires are simulated. The breaking and yield stress of nanowires are dependent on the Volume and temperature. The necking, Plastic deformation, slipping domain, twins, clusters, microspores and break-up phenomena of nanowire are demonstrated. Stress decreases with increasing nanowire volume and temperature. The final breaking position occurs at the central part of the nanowire when it is short, as the nanowire length increases the breaking position gradually shifts to the ends.
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Dissertations / Theses on the topic "Nanowire"

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Pfüller, Carsten. "Optical properties of single semiconductor nanowires and nanowire ensembles." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16360.

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Diese Arbeit beschreibt die optische Charakterisierung mittels Photolumineszenzspektroskopie (PL) von Halbleiter-Nanodrähten (ND) im allgemeinen und einzelnen GaN-ND und GaN-ND-Ensembles im speziellen. ND werden oftmals als vielversprechende Bausteine zukünftiger, kleinster Bauele- mente bezeichnet. Diese Vision beruht insbesondere auf einigen attraktiven Eigenheiten, die ND im allgemeinen zugeschrieben werden. Im ersten Teil dieser Arbeit werden exemplarisch einige dieser Eigenschaften näher untersucht. So wird anhand von temperaturabhängigen PL-Messungen an Au- und selbstinduzierten GaAs/(Al,Ga)As-ND der Einfluss des Keimmaterials auf die PL der ND untersucht. Weiterhin werden die optischen Eigenschaften von ZnO-ND untersucht, die auf Si-, Saphir- und ZnO-Substraten gewachsen wurden. Die optische Charakterisierung von GaN-ND nimmt den Hauptteil dieser Arbeit ein. Die detaillierte Untersuchung einzelner GaN-ND und von GaN-ND-Ensembles zeigt die Relevanz des großen Oberflächen-zu-Volumen-Verhältnisses und dass jeder ND ganz eigene optische Eigenschaften aufweist. Die unerwartet starke Verbreiterung des strahlenden Übergangs donatorgebundener Exzitonen wird durch das vermehrte Auftreten von Oberflächendonatoren erklärt, deren statistische Relevanz durch PL-Messungen an einzelnen ausgestreuten und freistehenden GaN-ND nachgewiesen werden kann. Weiterhin wird der Einfluss elektrischer Felder auf die optischen Eigenschaften von GaN-ND ermittelt. Die Ein- und Auskopplung von Licht mit GaN ND wird mithilfe von Reflektanz- und Ramanmessungen bestimmt. Die zentralen Ergebnisse dieser Arbeit motivieren die Einführung eines Modells, dass die typischerweise nichtexponentielle Rekombinationsdynamik in ND-Ensemblen erklärt. Es basiert auf einer Verteilung der Rekombinationsraten. Vorläufige Ergebnisse dieses Modells beschreiben das nichtexponentielle Rekombinationdynamik in GaN ND-Ensemblen zufriedenstellend und erlauben eine Abschätzung ihrer internen Quanteneffizienz.
This thesis presents a detailed investigation of the optical properties of semiconductor nanowires (NWs) in general and single GaN NWs and GaN NW ensembles in particular by photoluminescence (PL) spectroscopy. NWs are often considered as potential building blocks for future nanometer-scaled devices. This vision is based on several attractive features that are generally ascribed to NWs. In the first part of the thesis, some of these features are examined using semiconductor NWs of different materials. On the basis of the temperature-dependent PL of Au- and self-assisted GaAs/(Al,Ga)As core-shell NWs, the influence of foreign catalyst particles on the optical properties of NWs is investigated. The effect of the substrate choice is studied by comparing the PL of ZnO NWs grown on Si, Sapphire, and ZnO substrates. The major part of this thesis discusses the optical properties of GaN NWs. The investigation of the PL of single GaN NWs and GaN NW ensembles reveals the significance of their large surface-to-volume ratio and that each NW exhibits its own individual recombination behavior. An unexpected broadening of the donor-bound exciton transition is explained by the abundant presence of surface donors in NWs. The existence and statistical relevance of these surface donors is confirmed by PL experiments of single GaN NWs which are either dispersed or free-standing. Furthermore, the influence of electric fields on the optical properties of GaN NWs is investigated and the coupling of light with GaN NWs is studied by reflectance and Raman measurements. The central results of this thesis motivate the introduction of a model that explains the typically observed nonexponential recombination dynamics in NW ensembles. It is based on a distribution of recombination rates. Preliminary simulations using this model describe the nonexponential decay of GaN NW ensembles satisfactorily and allow for an estimation of their internal quantum efficiency.
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Zhou, Jing Cao. "Microtubule-templated nanowire and nanowire arrays." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1495961141&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Rudolph, Andreas [Verfasser], and Werner [Akademischer Betreuer] Wegscheider. "MBE growth of GaAs nanowires and nanowire heterostructures / Andreas Rudolph. Betreuer: Werner Wegscheider." Regensburg : Universitätsbibliothek Regensburg, 2012. http://d-nb.info/1025386205/34.

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Woodruff, Jacob Huffman. "Deterministic germanium nanowire growth : controlling the position, diameter, and orientaion of germanium nanowires /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Sivakumar, Kousik. "Nanowire sensor and actuator." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 5.53 Mb., 108 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1435931.

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Xu, Fei. "Optical fibre nanowire devices." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/65527/.

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The Optical Fibre Nanowire (OFN) is a potential building block in future micro- and nano-photonic device since it offers a number of unique optical and mechanical properties. In this thesis, the background and fundamental features of nanowires are introduced; the theory, design and demonstration of novel nanowire devices are discussed. At first, a short adiabatic taper tip is manufactured, and it is used as optical tweezers for trapping 1μm microspheres. Then, the most important devices - the OFN resonators including the simple Optical Nanowire Loop Resonator (ONLR) and complicated 3D Optical Nanowire Microcoil Resonator (OMNR) - are investigated theoretically and experimentally. A one-turn loop resonator and two-, three-, and four-turn ONMR are demonstrated experimentally; several kinds of methods on optimizing the ONMR profile are presented to make the manufacture of high-Q ONMRs easier. In order to protect and stabilize the ONMR, embedding the device in Teflon is demonstrated. Finally, more applications in refractometric sensing are presented: schemes of sensors based on an embedded ONLR and ONMR are presented. The sensor sensitivities are calculated: 700 nm/RIU (RIU is the Refractive Index Unit) can be achieved at the wavelength of 970 nm for a diameter of 600 nm. Additionally, a refractometric sensor based on an embedded ONMR is demonstrated experimentally; its sensitivity is about 40 nm/RIU.
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Husain, Ali Scherer Axel. "Nanotube and nanowire devices /." Diss., Pasadena, Calif. : California Institute of Technology, 2004. http://resolver.caltech.edu/CaltechETD:etd-05252004-113507.

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Mrzel, A., A. Kovic, A. Jesih, and M. Vilfan. "Decoration of MoSI Nanowires with Platinum Nanoparticles and Transformation into Molybdenum-nanowire Nased Networks." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35168.

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In this communication, we present solution-based coating procedure of MoSI nanowires (NW) with platinum nanoparticles. The average particle diameter was found to be around 2.82 nm, showing a narrow size distribution. This single-step in situ reduction method at room temperature in water solution can easily be applied for large-scale applications. We also prepared two-dimensional networks of MoSI NW bundles by deposition via spraying from a purified stable dispersion in acetonitrile onto NaCl crystals and nonconductive silicon wafer with pre-assembled molybdenum electrodes. The formation of a conductive molybdenum network was achieved by annealing in hydrogen due to coalescence of the templates MoSI bundles during transformation. Stable water dispersion of molybdenum NW network was prepared by simply dissolving the NaCl substrate with molybdenum network on the surface. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35168
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Morioka, Naoya. "Fundamental Study on Carrier Transport in Si Nanowire MOSFETs with Smooth Nanowire Surfaces." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188599.

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Lee, Huyong. "Titanium Oxide Nanowire Growth by Oxidation Under a Limited Supply of Oxygen: Processing and Characterization." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1236191211.

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Books on the topic "Nanowire"

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Shen, Guozhen, and Yu-Lun Chueh, eds. Nanowire Electronics. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-2367-6.

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Bindal, Ahmet, and Sotoudeh Hamedi-Hagh. Silicon Nanowire Transistors. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27177-4.

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Xiaoyan, Xue, ed. Nanowire research progress. New York: Nova Science Publishers, 2008.

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Liu, Jian-Wei. Well-Organized Inorganic Nanowire Films. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3947-8.

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Kim, Dae Mann, and Yoon-Ha Jeong, eds. Nanowire Field Effect Transistors: Principles and Applications. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-8124-9.

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Huo, Zheng-Yang. Nanowire-assisted Flow-through Electrode Enabling Electroporation Disinfection of Reclaimed Water. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4502-3.

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Bessire, Cédric Dominic. Semiconducting nanowire tunnel devices: From all-Si tunnel diodes to III-V heterostructure tunnel FETs. Konstanz: Hartung-Gorre Verlag, 2013.

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D.C.) International Heat Transfer Conference (14th 2010 Washington. Enhancement of heat transfer with pool and spray impingement boiling on microporous and nanowire surface coatings. Golden, CO: National Renewable Energy Laboratory, 2010.

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J, Glembocki O., Materials Research Society, and Materials Research Society Meeting, eds. Nanoparticles and nanowire building blocks--synthesis, processing, characterization and theory: Symposium held April 13-16, 2004, San Francisco, California, U.S.A. Warrendale, Pa: Materials Research Society, 2004.

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Serena, P. A., and N. García, eds. Nanowires. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-015-8837-9.

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Book chapters on the topic "Nanowire"

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Zhang, Xian-En, Dong Men, and Hongping Wei. "Nanowire Biosensors." In Encyclopedia of Biophysics, 1691–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-16712-6_718.

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Ghibaudo, Gérard, Sylvain Barraud, Mikaël Cassé, Xin Peng Wang, Guo Qiang Lo, Dim-Lee Kwong, Marco Pala, and Zheng Fang. "Nanowire Devices." In Beyond-CMOS Nanodevices 2, 25–95. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118985137.ch2.

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Shi, Jidong, and Ying Fang. "Nanowire Bioelectronics." In Nanostructure Science and Technology, 337–52. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2367-6_9.

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Dey, Suprava. "Nanowire Transistors." In Fabless Semiconductor Manufacturing, 111–63. New York: Jenny Stanford Publishing, 2022. http://dx.doi.org/10.1201/9781003314974-4.

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Boughrara, M., N. Zaim, H. Ahmoum, A. Zaim, and M. Kerouad. "Nanowire Magnets." In Emerging Applications of Low Dimensional Magnets, 77–91. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003196952-6.

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Kaur, Daljit. "Nanowire Magnets." In Fundamentals of Low Dimensional Magnets, 41–57. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003197492-3.

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Zhang, Anqi, Gengfeng Zheng, and Charles M. Lieber. "Nanowire-Enabled Energy Storage." In Nanowires, 203–25. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41981-7_8.

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Zhang, Anqi, Gengfeng Zheng, and Charles M. Lieber. "Nanowire-Enabled Energy Conversion." In Nanowires, 227–54. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41981-7_9.

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Daudin, Bruno. "InGaN Nanowire Heterostructures." In Wide Band Gap Semiconductor Nanowires 2, 41–60. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118984291.ch2.

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Yoda, Minami, Jean-Luc Garden, Olivier Bourgeois, Aeraj Haque, Aloke Kumar, Hans Deyhle, Simone Hieber, et al. "Nanowire FET Biosensor." In Encyclopedia of Nanotechnology, 1878. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_100578.

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Conference papers on the topic "Nanowire"

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Abramson, Alexis R., Woo Chul Kim, Scott T. Huxtable, Haoquan Yan, Yiying Wu, Arun Majumdar, Chang-Lin Tien, and Peidong Yang. "Nanowire Composite Thermoelectric Devices." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39237.

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This paper discusses the design, fabrication and testing of a novel thermoelectric device comprised of arrays of silicon nanowires embedded in a polymer matrix. By exploiting the low thermal conductivity of the composite and presumably high power factor of the nanowires, a high figure of merit should result. Arrays were first synthesized using a vapor-liquid-solid (VLS) process leading to one-dimensional growth of single-crystalline nanowires. To provide both structural support and thermal isolation between nanowires, parylene, a low thermal conductivity and extremely conformal polymer, was embedded within the arrays. Mechanical polishing and oxygen plasma etching techniques were used to expose the nanowire tips and a metal contact was deposited on the top surface. Scanning electron microscopy pictures illustrate the results of the fabrication processes. Using the 3ω technique, the effective thermal conductivity of the nanowire matrix was measured.
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Castillo, Eduardo, Sadia Choudhury, Hyun Woo Shim, Jaron Kuppers, Hanchen Huang, and Diana-Andra Borca-Tasciuc. "Thermal Characterization of Silicon Carbide Nanowire Films." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67321.

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This paper reports on thermal characterization of SiC nanowire films on alumina substrate. The SiC nanowires films were synthesized via carbothermal reduction by thermal evaporation of silica and graphite powders using a high temperature alumina tube furnace. Structural characterization showed that nanowires have a core-shell structure, with a core of single crystal SiC of ∼50 nm in diameter and an amorphous shell of silicon oxide of ∼10 nm in thickness. Prior thermal measurements as-deposited SiC nanowires were compacted into more dense films via capillary coalescence. The effective thermal conductivity in the direction perpendicular to the film was determined employing a steady-state experimental method in conjunction with one-dimensional heat transfer modeling. Preliminary results suggest that these films have a very low thermal conductivity, in the range of 0.1W/mK. The low thermal conductivity may be due to intrinsic structure of the nanowire film such as porosity and large number of interfaces between the SiC nanowire core and its outer oxide layer as well as thermal contact resistance at nanowires junctions.
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Nam, W. J., H. Carrion, P. Park, P. Garg, S. Joshi, and S. J. Fonash. "Step-and-Grow Approach for Precisely Positioned Nanowire Array Structure Fabrication." In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31151.

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A novel fabrication approach for forming precisely positioned nanowire array structures is introduced. The approach is suitable for potentially economical and environmentally safe manufacturing. For the demonstration of this approach, 100nm wide Sn nanowires and 150nm wide polyaniline (PANI) nanowires were synthesized using an electro-chemical deposition technique and a process we term the step-and-grow method. The nanowires produced exhibit the expected properties. For example, synthesized PANI nanowires showed reasonable ranges of electrical conductivities (e.g., 25S/cm for a 200nm wide, 200nm high, 10um long nanowire), and formed ohmic contact with electrodes on a substrate. It is shown that the polydimethylsiloxane (PDMS) stepping template mold used for our step-and-grow nanowire synthesis process can be used at least up to 40 times without degradation.
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Patterson, Brendan A., and Henry A. Sodano. "Effect of Zinc Oxide Nanowire Length on Interfacial Strength of Carbon Fiber Composites." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66509.

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Vertically aligned arrays of zinc oxide nanowires can serve as an adjustable interface for fiber composites through controllable synthesis techniques. When grown on carbon fiber surfaces as a fiber-matrix interphase of a composite, ZnO nanowires increase the surface area of interaction between fiber and matrix, and thus cause a greater interfacial shear strength of the composite. The ability to control the interfacial strength of this interphase through tailored morphologies enables the design of composite systems to specific applications. This report focuses on the controlled growth of ZnO nanowires and correlates the relationship between nanowire length and interfacial shear strength of the composite. Previous studies have focused on the effects of nanowire morphology on the interfacial strength; however, the data was limited to nanowire lengths < 1μm due to problems with nanowire uniformity and cleanliness [1]. Here, a new synthesis method is applied to the growth of zinc oxide nanowires on carbon fiber that enables the production of long, vertically aligned, uniform nanowires while maintaining the tensile properties of the fiber. The nanowires created by the new method are then compared to previous method nanowires by scanning electron microscopy imaging. Lastly, the interfacial shear strength of the fiber/polymer matrix composite is tested using single fiber fragmentation and correlated to the nanowire length of each method.
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Yoon, Hyeun Joong, Jin Ho Yang, Sang Sik Yang, and Eui-Hyeok Yang. "Microfabricated Nanowire Diluter for Controlled Assembly of Nanowires." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67865.

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The controlled assembly of nanowires is essential for nanoscale processes. The dielectrophoretic (DEP) assembly process enables a very simple and efficient assembly; however, controlling the number and dimension of nanowires to bridge electrodes is extremely intricate. The micromachined nanowire diluter presented in this paper can automatically dilute and sort nanowires in solution without requiring conventional centrifuge equipment. The device consists of a glass substrate with an array of gold electrode pairs and a PDMS microchannel. Nickel nanowires (30 μm-long) were fabricated by a template-directed electrodeposition process using nanoporous alumina templates. A liquid solution containing nanowires was injected into an inlet of the diluter. Pulsed voltages were applied to 16 pairs of electrodes. The nanowires were subsequently trapped or released in the microchannel at specific pulsed electric fields. As a result, the number of nanowires at the outlet of the channel was dramatically reduced, implying that the device presented here can effectively dilute nanowire suspensions for controlled assembly.
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Nastovjak, A., D. Shterental, I. Neizvestny, and N. Shwartz. "SIMULATION OF HIGH-TEMPERATURE ANNEALING OF GaAs NANOWIRE ARRAY." In Mathematical modeling in materials science of electronic component. LCC MAKS Press, 2022. http://dx.doi.org/10.29003/m3071.mmmsec-2022/71-74.

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Samuel, B. A., and M. A. Haque. "Thermo Electrical Characterization of Pyrolyzed Polyfurfuryl Alcohol Nanowires." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43359.

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We present experimental results on the electrical characteristics of carbonaceous nanowires using micro-fabricated two point electrodes. The nanowires (diameter varying from 150 nm to 250 nm, and tens of microns in length) are synthesized by the pyrolysis of polyfurfuryl alcohol (PFA) nanowire precursors. The microstructure of the pyrolyzed nanowire shows predominantly amorphous carbon structure with an increasing degree of graphitization reported in literature at higher pyrolysis temperatures. The effect of the nanowire surface temperature on its resistivity is also characterized. We observe temperature dependence in resistivity and decreasing resistance with increasing temperature which is evidence of semiconducting nature of these carbonaceous nanowires.
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Redcay, Christopher J., and Ongi Englander. "Germanium Nanowire Synthesis via Localized Heating and a Comparison to Bulk Processes." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37976.

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In this work, we compare the localized synthesis of germanium nanowires (GeNWs) to germanium nanowires synthesized under a globally high temperature environment. The localized synthesis of germanium nanowires is presented for the first time using the resistive heating of MEMS microbridges. The results of the localized synthesis process are then compared with the results of well-established high temperature synthesis processes for germanium nanowires. The effect of heat source and local temperature gradients on the resulting nanowires is assessed. The results suggest that optimal nanowire synthesis conditions in a high temperature furnace environment are no longer optimal in localized heating based synthesis. More specifically, there is a significant reduction in growth rates with the localized process. Differences in nanowire quality are observed as kinking and bending of the nanowires are a common result of the localized process yet rare in germanium nanowires synthesized in a global heating environment. Nanowires grown in a global heating environment exhibit larger average wire diameters, approximately 80 nm larger, compared to those synthesized using the localized heating process. Finally, nanowire tapering which is evident in the global heating process is not prevalent in the localized process.
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He, J., and C. M. Lilley. "Modeling and Characterization of Nanowires With Microcantilever Beams." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13762.

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Mechanical behavior of a nanowire-microcantilever beam structure under electrostatic actuation was studied using the FE method. A comparison for the resonant frequencies between a nanowire-microcantilever structure and a microcantilever only is presented. Several factors affecting the resonant frequency of the nanowire-microcantilever structure, such as actuation voltage and fabrication effects on geometries are discussed. Also, alignment effect of the nanowires with the microcantilever beam is investigated. This study can be utilized to predict Young's modulus of nanowires.
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Liang, Jianyu, and Zhenhai Xia. "Synthesis and Properties of Cobalt Nanowires." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21298.

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Understanding the structure and properties of metal nanowires is critical for the atomic-scale manipulation, design and application of those materials. Currently, active research on structure and behavior of various metallic nanowires has been carried out by computer simulation. Much experimental work has been done for synthesizing various metal nanowires by many different methods. To experimentally explore the mechanism of the behavior of and the development of structures in the nanowires, it is desirable to have the capability of synthesis various metal nanowires with controlled size, length, uniformity and aspect ratio. It is also desirable to further process those metal nanowires to engineer their properties. In our study, a template assisted fabrication method has been employed to fabricate various metal nanowire arrays, including cobalt, iron and nickel. This fabrication method offers us command over the size and length of the nanowires with excellent uniformity. Heat treatments were used to further process the metal nanowires. The structure of cobalt nanowire array has been investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Mechanical properties of the metal nanowire array will be investigated through nanoindentation and atomic force microscopy (AFM).
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Reports on the topic "Nanowire"

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Степанюк, Олександр Миколайович, and Руслана Михайлівна Балабай. Controlling by Defects of Switching of ZnO Nanowire Array Surfaces from Hydrophobic to Hydrophilic. Вид-во Прикарпатського нац. ун-т ім. Василя Стефаника, October 2023. http://dx.doi.org/10.31812/123456789/8487.

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The study investigated the wettability of polar and nonpolar ZnO nanowire surfaces, the effect of defects on the transition from hydrophobic to hydrophilic state of the surface of a ZnO nanowire array, and the atomic-level mechanisms of reversible wettability using first-principles density functional theory and pseudopotential methods.
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Javey, Ali. All Nanowire Integrated Sensor Circuitry. Fort Belvoir, VA: Defense Technical Information Center, April 2008. http://dx.doi.org/10.21236/ada498475.

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Leonard, Francois. Controlled fabrication of nanowire sensors. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/920825.

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Mallouk, Thomas E., and Joan M. Redwing. Photoelectrochemistry of Semiconductor Nanowire Arrays. Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/967083.

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Xu, Jimmy, Jin H. Kim, Chih-Hsun Hsu, Hongsik Park, and Steven Palefsky. Diamond Nanowire for UV Detection. Fort Belvoir, VA: Defense Technical Information Center, February 2010. http://dx.doi.org/10.21236/ada523432.

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Lee, Suhyun. The Optimized Synthesis of Copper Nanowire for High-quality and Fabrication of Core-Shell Nanowire. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.7259.

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Wang, George T., Changyi Li, Qiming Li, Sheng Liu, Jeremy Benjamin Wright, Igal Brener, Ting Shan Luk, et al. Electrically Injected UV-Visible Nanowire Lasers. Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1222989.

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Lieber, Charles M. Development and Applications of Nanowire Nanophotonics. Fort Belvoir, VA: Defense Technical Information Center, March 2006. http://dx.doi.org/10.21236/ada445794.

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Prokes, S. M., O. J. Glembocki, and R. W. Rendell. Highly Efficient SERS Nanowire/Ag Composites. Fort Belvoir, VA: Defense Technical Information Center, January 2007. http://dx.doi.org/10.21236/ada574478.

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Mou, Shin, Maogang Gong, Daniel Jasion, Shenqiang Ren, Zhou Yang, Xiaoliang Xu, Hongdi Zhang, and Yunze Long. Superhydrophobicity of Hierarchical and ZNO Nanowire Coatings. Fort Belvoir, VA: Defense Technical Information Center, January 2014. http://dx.doi.org/10.21236/ada607585.

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