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Relevant bibliographies by topics / Artificial diamonds / Dissertations / Theses

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Dissertations / Theses on the topic 'Artificial diamonds'

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Published: 4 June 2021

Last updated: 28 July 2024

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1

Talbot-Ponsonby, Daniel. "Paramagnetic defects in CVD diamonds." Thesis, University of Oxford, 1997. http://ora.ox.ac.uk/objects/uuid:d934e6d5-a7d5-409f-9849-8f019a9707b3.

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Paramagnetic defects in free standing polycrystalline diamond films made by chemical vapour deposition (CVD) have been studied using electron paramagnetic resonance (EPR), electron-nuclear double resonance (ENDOR) and infrared absorption. EPR experiments at a range of frequencies (1-35 GHz) confirm the <sup>1</sup>H hyperfine parameters for the recently identified H1 defect (Zhou et al., Phys. Rev. B, 54:7881 (1996)). In the samples studied here, H1 is always accompanied by another defect at g=2.0028(1). Saturation recovery measurements are consistent with two defects centred on g=2.0028. The

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Ma, Kwok Leung. "Nitrogen incorporation in nanocrystalline diamond thin films /." access abstract and table of contents access full-text, 2006. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?mphil-ap-b21471538a.pdf.

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Thesis (M.Phil.)--City University of Hong Kong, 2006.<br>"Submitted to Department of Physics and Materials Science in partial fulfillment of the requirements for the degree of Master of Philosophy" Includes bibliographical references.

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Newson, Pamela Lynn. "Studies of diamond film formation." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/30529.

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4

Chen, Yu-Chun Wilamowski Bogdan M. Tzeng Y. "Diamond chemical vapor deposition and practical applications." Auburn, Ala., 2009. http://hdl.handle.net/10415/1774.

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5

Scholvin, Dirk. "Wear resistant nanostructured diamondlike carbon coatings on Ti-alloy." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180353/unrestricted/scholvin%5fdirk%5f200312%5fms.pdf.

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6

Freeman, Mathieu Jon. "Synthesizing diamond films from low pressure chemical vapor deposition /." Online version of thesis, 1990. http://hdl.handle.net/1850/11262.

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7

Charyshkin, Eugene V. "New methods of diamond and diamondlike films deposition." Thesis, Queensland University of Technology, 1996.

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8

St, Omer Ingrid L. J. "The pressure response of synthetic polycrystalline diamond f ilms /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9737861.

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9

Семенов, Евгений Александрович, Олег Анатольевич Ковальчук, Aнна Mихайловна Синицкая, Григорий Иванович Гринь та Павел Анатольевич Козуб. "Анализ основных причин загрязнения окружающей среды в производстве искусственных алмазов". Thesis, Белгородская государственная технологическая академия строительных материалов, 2002. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30002.

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В работе проведен анализ основных причин загрязнения окружающей среды в производстве искусственных алмазов. Анализ показал необходимость внесения существенных изменений в технологическую схему обогащения полупродукта.<br>The paper analyzes the main causes of environmental pollution in the production of artificial diamonds. The analysis showed the need to make significant changes to the technological scheme for enriching the intermediate product.

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Pinto, Marcio Augusto Sampaio 1977. "Contribuições ao desenvolvimento de filmes de diamante microcristalino dopados com enxofre." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259951.

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Orientador: Vitor Baranauskas<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-10T13:04:37Z (GMT). No. of bitstreams: 1 Pinto_MarcioAugustoSampaio_M.pdf: 3334021 bytes, checksum: e3031df53e18ad072ffc8cbe1486889f (MD5) Previous issue date: 2007<br>Resumo: Apresentamos neste trabalho o desenvolvimento de filmes de diamante crescidos com adição de enxofre. Foram crescidos por deposição química a partir da fase vapor (diamante CVD) utilizando reatores do tipo filamento quente. Para a obtenção de

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Roos, Mathias. "Emissão de eletrons por efeito de campo em diamante policristalino dopado com boro e desenvolvimento de um novo sistema de ultra alvo vacuo." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259948.

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Orientador: Vitor Baranauskas<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-11T10:03:42Z (GMT). No. of bitstreams: 1 Roos_Mathias_M.pdf: 4816472 bytes, checksum: 51a357faa29ccbd01723b1d6ca5abf27 (MD5) Previous issue date: 2007<br>Resumo: Na primeira parte deste trabalho amostras de diamante poli-cristalino dopado com boro foram crescidas por deposição química a vapor assistida por filamento quente. As características de emissão de campo foram investigadas. A dopagem (NB) em amostras difer

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Козін, І. Д. "Фулерени – від маленького атома до молекули". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/66912.

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13

Haga, Mario Susumo. "Deposição de filme de diamante policristalino e diamond-like carbon-DLC por chama oxi-acetilênica." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277238.

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Orientador: Yoshikazo Ernesto Nagai<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-07-22T04:43:52Z (GMT). No. of bitstreams: 1 Haga_MarioSusumo_D.pdf: 2032545 bytes, checksum: 0a5c77a63e74ed97a007ae9c1c7c4943 (MD5) Previous issue date: 1997<br>Resumo: Avanços recentes no processo CVD (chemical vapor deposition) para a deposição de diamante e de DLC (diamond-like carbon), à baixa pressão, têm atraído para este campo muitos pesquisadores dos meios acadêmicos e industriais. As propriedades físicas e quimicas excepci

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Ren, Ying [Verfasser]. "Diamond-like carbon coatings deposited by vacuum arc in artificial hip joints / Ying Ren." Wuppertal : Universitätsbibliothek Wuppertal, 2013. http://d-nb.info/1045118397/34.

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15

Jones, Mark I. "Haemocompatibility and charactersation of candidate coatings for heart valve prosthesis." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301695.

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Prosthetic cardiac valve surgery is a well-established technique, but the search continues for engineering materials with sup..e rior mechanical characteristics in order to extend the service life of the implant. The introduction of pyrolytic carbon was seen as a breakthrough in the development of wear resistant, non-thrombogenic materials for such applications. However, thrombo-embolic phenomena and the need for anticoagulation treatment following valve insertion remain the main problems associated with artificial materials in this application. The work carried out in this research has studie

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Zahradnik, Izabella Anna. "Diamond-Based Microdosimetry for Hadron Therapy." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASP057.

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La hadronthérapie est un traitement innovant du cancer qui permet de détruire les cellules tumorales plus efficacement que par la radiothérapie conventionnelle utilisant des photons. Actuellement, le transfert d'énergie linéique (TEL) des particules est utilisé comme paramètre pour prédire l'efficacité biologique relative (EBR) des faisceaux de particules. Cependant les limitations de l’utilisation de ce paramètre ont conduit à l'introduction d'une quantité stochastique mesurable appelée énergie linéale des particules, qui constitue la base de la microdosimétrie. La valeur mesurée expérimental

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Correa, Washington Luiz Alves. "Contribuição para a sintese de diamante com dopagens de boro, nitrogenio ou enxofre." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260578.

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Orientador: Vitor Baranauskas<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-05T18:10:58Z (GMT). No. of bitstreams: 1 Correa_WashingtonLuizAlves_D.pdf: 3351242 bytes, checksum: 8f30a26c68d4c1e73a72d065eaedb4f9 (MD5) Previous issue date: 2004<br>Resumo: Estudamos processos de dopagem do diamante crescido por deposição química a partir da fase vapor (diamante CVD) com a introdução de impurezas dopantes durante o crescimento do diamante em reatores do tipo filamento-quente. Focalizamos nossa pesqu

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18

Liu, Yujing. "Finite element analysis of stress distribution within metal-on-metal joint replacements." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2012. https://ro.ecu.edu.au/theses/471.

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Demand for joint replacements is rising in Australia, driven by a sharp increase in the number of joint problems associated with population aging and obesity. In artificial joints, delamination or failure within the coatings occurs when the stress reaches a critical level, resulting in large wear debris particles appearing on the contact surface between the head and the cup. The process has been described as due to a stress-corrosion-cracking mechanism. Under the same loading, stress increases when the contact area decreases, which happens in the vicinity of wear debris. As such, once wear deb

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Melkerson, Sandra. "Diamanttetras utforskande beteende och stimformation i artificiell miljö : En jämförelse mellan odlade och vildfångade diamanttetror." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-77515.

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De har gjorts få studier på akvariesfiskars beteende. För att bemöta intresset för akvariefiskar så behöver vi veta mer om deras beteende i en artificiell miljö. Syftet med den här studien är att jämföra det utforskande beteendet hos vildfångade och odlade diamanttetror som är en vanlig akvariefisk. Hypotesen är att det finns en skillnad i deras beteende där vildfångade är mer djärva än de odlade. Grupper om fem individer av diamanttetra vildfångade och odlade släpptes ner i en ny artificiell miljö. De filmades i 20 minuter från de att de släpptes i. Testet upprepades 10 gånger med nya individ

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20

Guise, Aurore. "Contribution à la compréhension de l'épitaxie du diamant élaboré par MPCVD assisté par polarisation sur silicium : étude de la réactivité du substrat et influence des étapes de prétraitement sur le dépôt." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL076N/document.

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Le but de cette étude est de mieux appréhender les phénomènes régissant l’épitaxie du diamant élaboré par MPCVD assisté pas polarisation sur silicium. Elle s’articule en deux grands axes : une première approche qualitative sur la réactivité du substrat et une seconde approche plus quantitative relative à l’influence des étapes de prétraitement sur le dépôt. L’importance de la mise en œuvre d’un protocole rigoureux est mise en exergue dans ce travail. Le rôle des différentes étapes de préparation des substrats de silicium allant du nettoyage ex situ jusqu’à la croissance du diamant en passant p

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21

Borta, Petru. "Cristaux photoniques en diamant pour la réalisation de bio-capteurs innovants." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS006/document.

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Au cours des dernières années, la recherche dans le domaine des bio-capteurs optiques sans marquage a connu une croissance rapide du fait de la nécessité de développer des méthodes toujours plus performantes pour la détection et la mesure de faibles concentrations de molécules spécifiques dans divers domaines. Parmi les différentes méthodes optiques existantes, les cristaux photoniques (CP) offrent une alternative prometteuse du fait de leur sensibilité. D’autre part, le diamant, utilisé comme matériau pour la réalisation de ces dispositifs offre de bonnes propriétés optiques et la possibilité

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Petitfils, Aurélie. "Propriétés thermoluminescentes du diamant CVD : applications à la dosimétrie des rayonnements ionisants." Toulouse 3, 2007. http://thesesups.ups-tlse.fr/44/.

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Ce travail souligne l'intérêt du diamant synthétique pour la dosimétrie par thermoluminescence (TL) et plus particulièrement pour la radiothérapie. La première partie de ce travail porte sur les propriétés thermoluminescentes et dosimétriques du diamant polycristallin élaboré par synthèse CVD. Les résultats obtenus montrent que ce matériau est bien adapté pour la dosimétrie médicale par TL. La deuxième partie de ce travail s'intéresse à l'application du diamant CVD en radiothérapie. Des mesures de profils de dose, de rendements en profondeur sous photons et électrons, la cartographie d'un fais

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23

Danoczi, Elizabeth Jane. "Development of X-ray diamond simulants." Thesis, 2008. http://hdl.handle.net/10539/4736.

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X-ray machines that are designed to recover diamonds from an ore body, are used extensively on diamond mines. These machines are extremely expensive and at present, there are no reliable methods, outside the De Beers Group, of determining if the equipment is performing correctly. The object of this research was to manufacture X-ray translucent X-ray diamond simulants with known fluorescent signals ranging from bright to dim. These X-ray diamond simulants will then be used to evaluate the recovery efficiency of all X-ray machines on any diamond mine. The research successfully accomplishe

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Fish, Michael Lester. "Optical properties of synthetic diamond of different synthesis origin." Thesis, 1995. https://hdl.handle.net/10539/24379.

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A research report submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg in partial fulfilment of the requirements for the degree of Master of Science<br>The aim of this work was to evaluate the measurement of the optical properties as a means of obtaining information on the growth history of synthetic diamond. A suite of sample of known synthesis origin representing the different types of commercially produced synthetic diamond was analysed hy photoluminescence. The photoh.{fnmescence intensity was normalising by using the area of tbe Raman peak. This allow

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Damn, Oliver Frank Rudolf August. "Friction and wear of selected metal ceramic and polycrystalline diamond sliding couples." Thesis, 2017. http://hdl.handle.net/10539/21731.

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A thesis submitted to the Faculty of engineering. University of Witwatersrand. Johannesburg, in fulfilment of the requirements for the Degree of Doctor of Philosophy Pretoria, 1995<br>This thesis describes a study of the friction and wear characteristics of a range of oxide and silicon-based ceramics sliding against AlSI 440C stainless steel, as well as various sliding combinations of two types of De Beers polycrystalline diamond (PCD), namely Syndite and Syndax, To facilitate the former work, a high-speed reciprocating sliding test machine with computerized data acquisition and contr

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Araikum, Shawn. "Thermally and optically stimulated luminescence in synthetic diamond." Thesis, 2016. http://hdl.handle.net/10539/21357.

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This study investigated the photo-excitation and thermoluminescence properties of diamonds which were synthesised primarily for thermoluminescence dosimetry. For investigations of thermally stimulated processes occurring in these crystals an analysis of the thermoluminiscence & low spectra and the temperature dependent isothermal decay spectra was undertaken [Abbreviated abstract. Open document to view full version]<br>GR2016

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Ade, Nicholas. "Evaluation of the radiation detection properties of synthetic diamonds for medical applications." Thesis, 2015. http://hdl.handle.net/10539/17652.

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Liao, Ting Jang, and 廖廷彰. "Study of Properties of Artificial Diamond-nickel Composite Coatings." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/dpr47r.

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CHUNG, SHU-RU, and 鍾淑茹. "Study on Thermal Shock Analysis of Thin Diamond Film Coated Artificial Graphite." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/10450699626249234292.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>86<br>Application of isotropic graphite is important in wide range, especially in semiconductor industry, aerospace rockets, high temperature gas cooled reactors and first wall components of plasma-facing nuclear fusion devices. This paper reports the experimental results of our studies on the thermal shock resistance, which were evaluated via use of the Weibull distribution. The thermal shock testing of the disk specimen undergone an induction coil heating system was conduc

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Koreshkova, AN. "Investigations of novel artificial diamond-based composite substrates for separation science and analytical chemistry." Thesis, 2020. https://eprints.utas.edu.au/35891/1/Koreshkova_whole_thesis.pdf.

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The development of new technologies, such as ultra-high-performance liquid chromatography is an incentive for the development of advanced, pressure- and temperature-resistant adsorbents to achieve faster and more efficient separations. Carbon-based materials for separation science have been studied intensively during the last few decades. Diamonds unique properties such as chemical inertness, mechanical, thermal and hydrolytic stability, excellent thermal conductivity with minimal thermal expansion and intriguing adsorption properties make them one of the most potentially useful carbon-based a

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31

Ken-Fu, Liu, and 劉耿甫. "A Wear Study of the Diamond Film and Metal Substrate on Artificial Joint." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13563588258220909018.

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碩士<br>國立中正大學<br>機械系<br>92<br>Due to change of social life style and the advancement of the medical science, osteoarthritis becomes the most popular illness among the senile diseases. As the osteoarthritis becomes worse, the treatment of total joint replacement is the best choice. But the service life of the artificial joint needs to be lengthened at present. It is an important subject to strengthen its wear-resisting property. In the present study, sputtering graphite and titanium targets deposit different thickness (0.3, 0.6 and 1.2μm) DLC film on Co-Cr-Mo and Ti-6A1-4V alloy subst

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Scarabelli, Diego. "Advanced Quantum Electronic and Spin Systems: Artificial Graphene and Nitrogen-Vacancy Centers in Diamond." Thesis, 2016. https://doi.org/10.7916/D8736R69.

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When nature is observed at the nanoscale, quantum physics is typically the most accurate model to describe and predict its behavior. Furthermore, quantum effects are increasingly at the core of the operation of new advanced electronic and photonic devices, which, in some cases, are designed on the basis of controlling quantum systems. This thesis focuses on two such systems, united by the methods used to realize them. These methods represent the cutting-edge of nanofabrication, which is the structuring of matter at ultra-small dimensions with a degree of precision and control that has not been

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Chang, Kai-Ting, and 張凱婷. "The Chaos and Long Memory for Precious Metals and Diamond Indexes-An Analysis of Artificial Neural Network." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/65721053701447170733.

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碩士<br>中原大學<br>企業管理研究所<br>98<br>The luxury goods, like diamonds, gold, silver and other precious metals, have aesthetic value and dignify the taste, widely using in various fields such as eletronics, optical instruments, and automobile industries. In recent years, the problems of global financial crisis, national debt crisis and other issues making diamonds and precious metals begin to make a mark. The value of the exiguous and the hedge function uplift the investment value. Therefore, if investors are trying to use diamonds and precious metals as an investment target, they can observe the pric

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Liao, Chi Wei, and 廖琦瑋. "Study of the performance Cr-C-Artificial Diamond composite coating on the medium carbon steel for milling." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/68793u.

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碩士<br>長庚大學<br>機械工程學系<br>105<br>The electroplated diamond millers, which were fabricated through electroplating Ni-Cr-C-diamond composite coatings on a medium carbon steel (S45C) rod with a diameter of 5.7 mm and the average of diamond particles size is 50 μm. There are two methods for Cr-C-diamond composite coatings after Ni undercoat on a medium carbon steel (S45C). One is Cr-C-diamond composite coatings with intermittent stirring in the Cr-diamond plating, but the diamond particles were only deposited on the bottom of specimen, and the other is co-electroplating with Ni undercoat which was p

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Sarma, Siddhartha. "Resource Allocation in Wireless Networks for Secure Transmission and Utility Maximization." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/3123.

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Resource allocation in wireless networks is one of the most studied class of problems. Generally, these problems are formulated as utility maximization problems under relevant constraints. The challenges posed by these problems vary widely depending on the nature of the utility function under consideration. Recently, the widespread prevalence of wireless devices prompted researchers and engineers to delve into the security issues of wireless communication. As compared to the wired medium, ensuring security for the wireless medium is more challenging mainly due to the broadcast nature of the t

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Sarma, Siddhartha. "Resource Allocation in Wireless Networks for Secure Transmission and Utility Maximization." Thesis, 2016. http://hdl.handle.net/2005/3123.

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Resource allocation in wireless networks is one of the most studied class of problems. Generally, these problems are formulated as utility maximization problems under relevant constraints. The challenges posed by these problems vary widely depending on the nature of the utility function under consideration. Recently, the widespread prevalence of wireless devices prompted researchers and engineers to delve into the security issues of wireless communication. As compared to the wired medium, ensuring security for the wireless medium is more challenging mainly due to the broadcast nature of the t

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