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Rozprawy doktorskie na temat „Nano-Crystalline Diamond”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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1

Wu, Tao. "Tooling performance in micro milling : modelling, simulation and experimental study." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/7211.

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With the continuing trend towards miniaturization, micro milling plays an increasingly important role in fabrication of freeform and high-accuracy micro parts or components directly and cost-effectively. The technology is in kinematics scaled down from the conventional milling, however, existing knowledge and experiences are limited and comprehensive studies on the micro tooling performance are essential and much needed particularly for the process planning and optimization. The cutting performance of micro tools is largely dependent on the dynamic performance of machine tools, tooling charact

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Cai, Yixiao. "Bio-Nano Interactions : Synthesis, Functionalization and Characterization of Biomaterial Interfaces." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-277121.

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Current strategies for designing biomaterials involve creating materials and interfaces that interact with biomolecules, cells and tissues. This thesis aims to investigate several bioactive surfaces, such as nanocrystalline diamond (NCD), hydroxyapatite (HA) and single crystalline titanium dioxide, in terms of material synthesis, surface functionalization and characterization. Although cochlear implants (CIs) have been proven to be clinically successful, the efficiency of these implants still needs to be improved. A CI typically only has 12-20 electrodes while the ear has approximately 3400 i

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Abdolvand, Reza. "Thin-film piezoelectric-on-substrate resonators and narrowband filters." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/28113.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Farrokh Ayazi; Committee Member: James D. Meindl; Committee Member: John D. Cressler; Committee Member: Nazanin Bassiri-Gharb; Committee Member: Oliver Brand.

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Chimowa, George. "Synthesis and characterization of nano-crystalline diamond films." Thesis, 2011. http://hdl.handle.net/10539/10410.

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MSc, Faculty of Science, University of the Witswatersrand, 2011<br>The objective of this project is to understand the details of the electronic transport in low dimensional carbon structures at low temperatures as well as high magnetic fields. The emphasis is on the quasi-2 dimensional thin grain boundary regions of nanodiamond films and one dimensional carbon nanotubes. As such nitrogen “doped” and undoped nanodiamond films were synthesized by the hot filament chemical vapor deposition method (HFCVD). The films were micro-structurally and electrically characterized using several techniques su

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Wu, Yao-Ming, and 吳耀明. "The study of arrayed nano-crystalline diamond devices." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/86720787459382320767.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>97<br>In this dissertation, the different array interval structure of nanocrystalline diamond (NCD) films were fabricated to study the effect on the field emission properties and gas ionization sensors on different pressure in nitrogen gas, respectively. NCD films were deposited on silicon substrate by microwave plasma chemical vapor deposition system. The surface morphology of NCD films were characterized by the field emission scanning electron microscopy. The characterization of NCD films were analyzed by Raman, XPS and AFM to show the quality, the surface composit

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Chiang, Horng-Yi, and 江泓逸. "Influence on characteristics of “micro-crystalline diamond/ultra nano-crystalline diamond” in addition of argon gas." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39425394058294825181.

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碩士<br>國立臺灣師範大學<br>物理學系<br>99<br>Diamond films possess excellent physical, chemical, and mechanical properties, such that the syntheses of diamond films have been the focus of research. Moreover, the diamond films own marvelous field emission properties and have great patential for the application on the electron field emission devices. The chemical vapor deposition (CVD) has been the most widely utilized process for growing the diamond films. In this study, we used microwave plasma enhanced chemical vapor deposition (MPECVD) technique to synthesize microcrystalline diamond/ultrananocrystal

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鄭文秀. "Characteristic study and fabrication of field emitters by ultra-nano crystalline and micro-crystalline diamond." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/02184058059511767167.

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Chen, Chien-Fu, and 陳建甫. "Carbon Embedded Nano-Crystalline Diamond Film and Its Field Emission Properties." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/17724384685705005960.

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碩士<br>國立清華大學<br>材料科學工程學系<br>100<br>Diamond film has attracted immense attention as a field emission material due to its negative electron affinity and robust mechanical and chemical properties. It has been widely investigated. Based on literatures, the critical factors of diamond film field emission are grain size, the structure of grain boundary, conductivity, graphite structure distribution, structural defect density, surface roughness, surface functional groups, etc. In this work, nano-graphite fiber embedded nano-crystalline diamond films were synthesized, and it’s excellent electron

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Wong, Xuan-Bo, and 翁瑄博. "Nano/Micro crystalline diamond on silicon-based templates for field emission studies." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/30469354544011056483.

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碩士<br>國立臺灣科技大學<br>光電工程研究所<br>101<br>In this dissertation, Nano/Micro crystalline diamond were fabricated on different silicon-based structures to study the effect on the field emission properties. NCD and MCD were deposited on Planar-Si, Pyramid-Si and SiNWs/Pyramid-Si by microwave plasma chemical vapor deposition system. The surface morphologies of diamond were characterized by the field emission scanning electron microscopy. The characterizations of diamond were analyzed by Raman, XPS and AFM to show the quality, the sp3/sp2 ratio and average roughness of diamond, respectively. It is f

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Ye, Ke-Yang, and 葉可揚. "X-ray Absorption Spectroscopy Study of Cu Ion Implanted Ultra-nano Crystalline Diamond Films." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/70538594278865464507.

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碩士<br>淡江大學<br>物理學系碩士班<br>103<br>We have performed x-ray absorption near edge structure (XANES) study on Cu ion implanted, fluence varies from 1x1015 to 1x1017 ions/cm2, ultra-nano crystalline diamond (UNCD) films. From the XANES of C K-edge of the films, we found that the absorption intensity of sp3 structure decreased tremendously. In the meantime, the exciton peak and the second band gap are completely disappeared. We also observed the absorption intensities due to sp2 structure, C-OH bond, C-H bond and the surface defect peaks all increase. As the Cu-ion fluence reached 1x1016 ions/cm2, the

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Liu, Chun-Cheng, and 劉竣誠. "The development and application of the ultra-nano crystalline diamond film in field emission device." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/41702858328946360225.

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碩士<br>國立清華大學<br>材料科學工程學系<br>95<br>In this work, the ultra-nano crystalline diamond film(UNCD) was grown on the molybdenum(Mo-Si)、tungsten(W-Si) films and molybdenum(Mo-B)、tungsten(W-B) bulks by microwave plasma enhanced chemical vapor deposition(MPECVD). The XRD and XPS analysis showed there is metallic carbide forming in the interface between diamond and metal films. In contrast, there is no metallic carbide forming between diamond and metal bulks. From SEM measurement, diamond deposited on the W-Si film was faster than on the Mo-Si film. The SEM also showed the grow rate in films are f

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Bai, Shao-Huai, and 白少懷. "Reduced Graphene Oxide /N2 incorporated Ultra-Nano-Crystalline-Diamond on Nickel Foam for Pseudo-capacitors studies." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/286765.

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碩士<br>國立臺灣科技大學<br>光電工程研究所<br>107<br>Abstract In this study, we used microwave systems to deposit ultra-nano diamonds on nickel foam substrates. In addition, we use reduced graphene oxide to increase the characteristics of pseudo-capacitors. This study is divided into two parts. The first part is mainly to discuss the quality of ultra-nanocrystalline diamond, which was grown by microwave plasma enhanced chemical vapor deposition (MPECVD) at different time durations. And also focused on the preparation of glucose derived reduced graphene oxide grown for different time durations at 200 ºC. We foc

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Lin, Sheng-Chang, and 林聖昌. "Design of microwave plasma enhanced CVD system and their application in the growth of ultra-nano crystalline diamond film." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/44184002920054083112.

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碩士<br>淡江大學<br>物理學系碩士班<br>98<br>A microwave plasma reactor was designed for growing large area diamond films by plasma-enhanced chemical vapor deposition process. The annular microwave coupling technique is adopted for designing the microwave plasma reactor. The first step in the reactor designing process is to determine the length (8 half-wavelength) of a rectangular wave guide with WR 340 cross-sectional dimension, bend it to form a annular resonance structure. The slots of proper dimension (2.5 mm x 50 mm) were located at the point of maximum surface current to couple the microwave from the

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Chang, Ming-Chen, and 張名辰. "A Study of Synthesis Large Area Nano Crystalline Diamond Films by Reciprocating Carrier System Using Single-Chip Microcomputer Controller." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/6k9v5x.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>99<br>In this study, smooth and uniform large area nanodiamond thin film (NCD) were synthesized by using home-made microwave plasma jet chemical vapor deposition (MPJCVD) system with mechanical feed through. Linear motion reciprocating carrier, which used microcomputer single-chip to control the motor speeds, was added into MPJCVD system. The CNY70 photosensor was employed as a switch to change the different speeds which ensure uniform NCD films growth. Finally, the regional larger NCD film’s variations by reciprocating carrier system have been investigated. The ul

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Wu, Ying-Yu, and 吳盈佑. "Synthesis of Nano-crystalline diamonds with chlorinated wastes in supercritical fluids." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/67391397048100501870.

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碩士<br>國立成功大學<br>環境工程學系碩博士班<br>93<br>CCl4 may cause catalytically depletion of ozone in the stratosphere. CCl4 may lead to kidney and liver damage, and is possibly carcinogenic to humans. Chlorine-containing wastes may be decomposed completely via high-temperature thermal oxidation. Undesirable by-products such as dioxins may be formed especially during cooling of the flue gases. Because of low dielectric constants, metal salts may possess low solubility of metal salts in SCFs (supercritical fluids). Chlorine in CCl4 may be abstracted by alkali cations due to formation of low solubility al

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