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Author : 詹宗晟
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (864 download)
Download or read book Fabrication and Characterization of Nanotwinned Copper Films and Nanowires written by 詹宗晟 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hardev Singh Virk
Publisher :
ISBN 13 : 9789533073187
Total Pages : pages
Book Rating : 4.0/5 (731 download)
Download or read book Fabrication and Characterization of Copper Nanowires written by Hardev Singh Virk and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francis R. Phillips
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (759 download)
Download or read book Fabrication and Characterization of Nanowires written by Francis R. Phillips and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of nanostructures has become very common throughout high-tech industries. In order to enhance the applicability of Shape Memory Alloys (SMAs) in systems such as Nano-Electromechanical Systems, the phase transformation behavior of SMA nanostructures should be explored. The primary focus of this work is on the fabrication of metallic nanowires and the characterization of the phase transformation of SMA nanowires. Various metallic nanowires are fabricated through the use of the mechanical pressure injection method. The mechanical pressure injection method is a template assisted nanowire fabrication method in which an anodized aluminum oxide (AAO) template is impregnated with liquid metal. The fabrication procedure of the AAO templates is analyzed in order to determine the effect of the various fabrication steps. Furthermore, metallic nanowires are embedded into polymeric nano bers as a means to incorporate nanowires within other nanostructures. The knowledge obtained through the analysis of the AAO template fabrication guides the fabrication of SMA nanowires of various diameters. The fabrication of SMA nanowires with di fferent diameters is accomplished through the fabrication of AAO templates of varying diameters. The phase transformation behavior of the fabricated SMA nanowires is characterized through transmission electron microscopy. By analyzing the fabricated SMA nanowires, it is found that none of the fabricated SMA nanowires exhibit a size eff ect on the phase transformation. The lack of a size e ffect on the phase transition of SMA nanowires is contrary to the results for SMA nanograins, nanocrystals, and thin films, which all exhibit a size eff ect on the phase transformation. The lack of a size eff ect is further studied through molecular dynamic simulations. These simulations show that free-standing metallic nanowires will exhibit a phase transformation when their diameters are sufficiently small. Furthermore, the application of a constraint on metallic nanowires will inhibit the phase transformation shown for unconstrained metallic nanowires. Therefore, it is concluded that free-standing SMA nanowires will exhibit a phase transformation throughout the nanoscale, but constrained SMA nanowires will reach a critical size below which the phase transformation is inhibited.
Author : Yongho Choi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (65 download)
Download or read book Growth, Fabrication, and Characterization of Carbon Nanotubes, Nanotube Films, and Nanowires written by Yongho Choi and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Furthermore these grids provide a low cost, mass producible, efficient, reliable, and versatile platform for direct TEM, AFM, SEM, and Raman analysis of as-grown nanomaterials, eliminating the need for any post-processing growth. We also explored fabrication and characterization of single-walled carbon nanotube films which are three-dimensional films of tens of nanometers thickness, consisting of an interwoven mesh of single-walled carbon nanotubes. We demonstrate, for the first time, patterning of SWNT films down to submicron lateral dimensions as small as 50 nm using e-beam lithography and inductively coupled plasma (ICP) etching. This simple and efficient "top-down" patterning capability developed could open up tremendous opportunities for integrating single-walled nanotube films into a wide range of electronic and optoelectronic devices. Furthermore, we fabricate and characterize the effect of device geometry on the dark current of metalsemiconductor- metal (MSM) photodetectors based on SWNT film-GaAs Schottky contacts. We observed that dark currents of the MSM devices scale rationally with device geometry, such as the device active area, finger width, and finger spacing. These results open up the possibility of integrating SWNT films as transparent and conductive Schottky electrodes in conventional semiconductor electronic and optoelectronic devices.
Author : Benjamin C. Wang
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (86 download)
Download or read book Fabrication and Characterization of Nanostructured Copper Oxide and Zinc Oxide Thin Films for Photovoltaic Applications written by Benjamin C. Wang and published by . This book was released on 2011 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Colm O'Regan
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659694592
Total Pages : 204 pages
Book Rating : 4.6/5 (945 download)
Download or read book Fabrication and Characterization of Semiconductor Nanowires written by Colm O'Regan and published by LAP Lambert Academic Publishing. This book was released on 2016-01-15 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: One-dimensional semiconductor nanowires are considered to be promising materials for future nanoelectronic applications. However, before these nanowires can be integrated into such devices, a thorough understanding of their growth behaviour is necessary. In particular, methods that allow the control over nanowire growth are deemed especially important, as it is these methods that will enable the control of nanowire dimensions such as length and diameter. The production of nanowires with high-aspect ratios is vital in order to take advantage of the unique properties experienced at the nanoscale, thus allowing us to maximise their use in next-generation electronics. Additionally, the development of low-resistivity interconnects is desirable in order to connect such nanowires in multi-nanowire components. Consequently, this book aims to discuss the synthesis and characterisation of semiconductor nanowires and metal interconnects, as they apply to future electronics applications.
Author : Yao Cheng
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (492 download)
Download or read book Fabrication and Characterization of Metal Oxide Nanowires written by Yao Cheng and published by . This book was released on 2009 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrès de Luna bugallo
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (819 download)
Download or read book Fabrication and Characterization of Nanodevices Based on III-V Nanowires written by Andrès de Luna bugallo and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanowires are nanostructures with lengths up to few microns and small cross sections (10ths of nanometers). In the recent years the development in the field of III-N nanowire technology has been spectacular. In particular they are consider as promising building in nanoscale electronics and optoelectronics devices; such as photodetectors, transistors, biosensors, light source, solar cells, etc. In this work, we present fabrication and the characterization of photodetector and light emitter based devices on III-N nanowires. First we present a study of a visible blind photodetector based on p-i-n GaN nanowires ensembles grown on Si (111). We show that these devices exhibit a high responsivity exceeding that of thin film counterparts. We also demonstrate UV photodetectors based on single nanowires containing GaN/AlN multi-axial quantum discs in the intrinsic region of the nanowires. Photoluminescence and cathodoluminescence spectroscopy show spectral contributions above and below the GaN bandgap according to the variation of the discs thickness. The photocurrent spectra show a sub-band-gap peak related to the interband absorption between the confined states in the large Qdiscs. Finally we present a study of photodetectors and light emitters based on radial InGaN/GaN MQW embedded in GaN wires. The wires used as photodetectors showed a contribution below the GaN bandgap. OBIC measurements demonstrate that, this signal is exclusively generated in the InGaN MQW region. We showed that LEDs based on this structure show a electroluminescence emission and a red shift when the In content present in the QWs increases which is in good agreement with photoluminescence and cathodoluminescence results.
Author : Timothy Marvin Whitney
Publisher :
ISBN 13 :
Total Pages : 842 pages
Book Rating : 4.:/5 (285 download)
Download or read book The Fabrication and Characterization of Cylindrical Nanowires with High Aspect Ratios written by Timothy Marvin Whitney and published by . This book was released on 1992 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maria Eugenia Toimil Molares
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (248 download)
Download or read book Fabrication and Characterisation of Copper Nanowires Electrochemically Deposited in Etched Ion Track Membranes written by Maria Eugenia Toimil Molares and published by . This book was released on 2001 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jian-Ying Xiang
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (11 download)
Download or read book Fabrication and Characterization of Nano-structured MoN Thin Films written by Jian-Ying Xiang and published by . This book was released on 2017 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vicki Wai-Shum Lui
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.:/5 (71 download)
Download or read book Fabrication and Characterization of Silicon Nanowires and Metal Nanostructures written by Vicki Wai-Shum Lui and published by . This book was released on 2005 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication and Characterisation of Copper Nanowires Electrochemically Deposited in Etched Ion-track Membranes written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Poly- and single-crystalline copper nanowires have been created by electrochemical deposition of copper in etched ion-track membranes. 30 æm thick polycarbonate foils were irradiated at the UNILAC (GSI, Darmstadt) with Au and Pb ions of kinetic energy 1-2 GeV with?uences between 1 and 10^9 ions/cm^2. The latent tracks generated by the heavy ions were chemically etched providing membranes with cylindrical pores of diameter between 30 nm and æm. These membranes were used as templates for the growth of copper. Potentiostatic deposition of copper in membranes with large (several hundred nm) and small (several ten nm) diameter pores have been investigated using a two-electrode electrochemical cell. We present the results of a systematic study aimed at determination of the optimal deposition parameters (overvoltage, temperature, and electrolyte solution) required for single-crystalline growth. The morphology and crystallinity of the copper nanowires were studied by means of scanning electron microscopy, transmission electron microscopy and x-ray diffraction. Thus, from our results we can afirm that nanowires deposited at high temperatures (50?C) and overvoltages lower than 60 mV possess a single-crystalline structure. Polycrystalline wires were obtained from deposition at room temperature or at higher overvoltages. Typical defects of single- crystals as twins and slips were also observed. Two different techniques were tested to contact nanoneedles for electrical transport measurements.
Author : Hanan Mohammed
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)
Download or read book Advanced Fabrication and Characterization of Magnetic Nanowires written by Hanan Mohammed and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic nanowires feature unique properties that have attracted the interest of different research areas from basic physics over biomedicine to data storage. The combination of crystalline and shape anisotropy is mainly responsible for the magnetic properties of the nanowires, whereby different methods for tuning those properties are available. The nanowires typically represent single-domain particles, and magnetization switching occurs via domain walls nucleated at the ends of the nanowire and traversing it. Combined with a high biocompatibility, iron or iron oxide nanowires can be used as nanorobots for biomedical applications, destroying cancer cells, or delivering drugs. The nanowires are also attractive for data storage, especially in a three-dimensional device, because of the high-domain wall speed that has been theoretically predicted. This chapter offers an introduction to the electrochemical synthesis of cylindrical nanowires in anodic aluminum oxide (AAO) templates. Template modification techniques such as barrier layer thinning, barrier layer etching, and diameter modulation are discussed. Advanced fabrication techniques of nanowires with varying structural and chemical variations such as multisegmented and core-shell nanowires are elaborated. The characterization of single nanowires encompassing physical, magnetic, and electrical techniques is covered.
Author : Graeme Antony Hill
Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.:/5 (72 download)
Download or read book Fabrication and Characterization of Nanowires written by Graeme Antony Hill and published by . This book was released on 2006 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hui Liang
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (852 download)
Download or read book Fabrication and Characterization of Nanowire Devices written by Hui Liang and published by . This book was released on 2011 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan Pate
Publisher :
ISBN 13 :
Total Pages : 255 pages
Book Rating : 4.:/5 (862 download)
Download or read book Fabrication and Characterisation of DNA-templated Copper Nanowires written by Jonathan Pate and published by . This book was released on 2013 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:
