To see the other types of publications on this topic, follow the link: Amorphous substances.

Dissertations / Theses on the topic 'Amorphous substances'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Amorphous substances.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Atta-Fynn, Raymond. "Theory of localized electron states and novel structural modeling of amorphous silicon /." View abstract, 2005. 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:3203330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Punsalan, David Troy. "A sorption and dilation investigation of amorphous glassy polymers and physical aging." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035168.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Saito, Ichitaro. "Amorphous selenium photoelectric devices." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610017.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Jiang, Yucheng, and 姜昱丞. "Magnetoresistance, photoconductivity and strain effect in the system of magnetically doped amorphous carbon." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208021.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gabriel, Margaret A. "Electronic defects in amorphous silicon dioxide /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/8553.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Goldstein, Alexandra Susan. "Computer simulations of amorphous copper-zirconium /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/8629.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Chieng, Heng Liang Norman, and n/a. "Amorphous drug preparation using ball milling." University of Otago. School of Pharmacy, 2008. http://adt.otago.ac.nz./public/adt-NZDU20081209.162001.

Full text
Abstract:
Polymorphism and crystallinity are now recognised as important issues in drug development. This is shown by the increased amount of research in this area over recent years. In pharmaceutical development milling is an important unit operation for size reduction to improve powder handling, processing and dissolution rate. The aim of this thesis was to investigate the effect of ball milling (and cryo-milling) on the solid state properties, including amorphous drug formation, of pharmaceutical solids. Milling was carried out using an oscillatory ball mill (Mixer Mill MM301, Retsch GmbH & Co., Ge
APA, Harvard, Vancouver, ISO, and other styles
8

Chen, En-Tsung. "On the pressure formation of metallic glasses." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/17978.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Brüning, Ralf. "Reversible structural relaxation in iron based metallic glasses." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65539.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lau, King Cheung. "Crystallization of amorphous alloy and the associated changes of properties." access abstract and table of contents access full-text, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21174453a.pdf.

Full text
Abstract:
Thesis (M.Sc.)--City University of Hong Kong, 2005.<br>At head of title: City University of Hong Kong, Department of Physics and Materials Science, Master of Science in materials engineering & nanotechnology dissertation. Title from title screen (viewed on Sept. 1, 2006) Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
11

Heinz, Andrea, and n/a. "Novel approaches for physicochemical characterisation and quantification of amorphous pharmaceutical compounds." University of Otago. School of Pharmacy, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080924.133134.

Full text
Abstract:
The amorphous state is becoming increasingly important in the pharmaceutical setting. Formulation of poorly water soluble drugs in the amorphous form enhances physicochemical properties of the drug, such as solubility and dissolution rate, which in turn may lead to an increased bioavailability. However, despite these advantages, many properties of the amorphous state are not yet understood and amorphous materials pose a challenge for structural analysis since they lack three dimensional long range order. Hence, compared to crystalline materials often little structural information can be gained
APA, Harvard, Vancouver, ISO, and other styles
12

Lu, Meijun. "Silicon heterojunction solar cell and crystallization of amorphous silicon." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 295 p, 2009. http://proquest.umi.com/pqdweb?did=1654494651&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Tse, Shing Chi. "Charge transport and injection in amorphous organic electronic materials." HKBU Institutional Repository, 2007. http://repository.hkbu.edu.hk/etd_ra/821.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Ковтуненко, В. С. "Застосування квадратичного розподілу міжатомних відстаней координаційних сфер аморфних плівок". Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27632.

Full text
Abstract:
У роботі аналізуються результати проведених математичних розрахунків параметрів функції розподілу міжатомних відстаней різних координаційних сфер аморфного кремнію. Показано, що для різних моделей розподілів міжатомних відстаней координаційних сфер проявляються суттєві відмінності в загальній сумарній функції радіального розподілу атомів. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/27632
APA, Harvard, Vancouver, ISO, and other styles
15

Katakam, Shravana K. "Laser Surface Treatment of Amorphous Metals." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500194/.

Full text
Abstract:
Amorphous materials are used as soft magnetic materials and also as surface coatings to improve the surface properties. Furthermore, the nanocrystalline materials derived from their amorphous precursors show superior soft magnetic properties than amorphous counter parts for transformer core applications. In the present work, laser based processing of amorphous materials will be presented. Conventionally, the nanocrystalline materials are synthesized by furnace heat treatment of amorphous precursors. Fe-based amorphous/nanocrystalline materials due to their low cost and superior magnetic prope
APA, Harvard, Vancouver, ISO, and other styles
16

Wilks, Broderick. "Free volume and free volume distribution impact on transport properties in amorphous glassy polymers." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/9377.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Kanakala, Raghunath. "Spark plasma sintering of a structurally amorphous metal (SAM7) with addition of Y₂O₃ with nanoparticles." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1456485.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Socratous, Josephine. "Investigating defect states and charge transport in amorphous metal oxides for thin-film transistor applications." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709317.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Fong, Hon Hang. "Transport and luminance of organic electronic materials." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/612.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Donev, Jason Matthew Kaiser. "Non-contact atomic force microscopy studies of amorphous solid water deposited on Au(111) /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/9779.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Li, Huaming. "Theory of phase transitions in disordered crystal solids." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29707.

Full text
Abstract:
Thesis (Ph.D)--Physics, Georgia Institute of Technology, 2009.<br>Committee Chair: Li Mo; Committee Member: Chou Meiyin; Committee Member: First Phillip; Committee Member: Nguyen Toan; Committee Member: Zangwill Andrew. Part of the SMARTech Electronic Thesis and Dissertation Collection.
APA, Harvard, Vancouver, ISO, and other styles
22

Gao, Chao. "Spectral momentum densities of crystalline graphite and ion sputtered amorphous carbon films from (e,2e) spectrology." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53693.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Anooshehpour, Farid. "Optical emission spectroscopy as a process-monitoring tool in PECVD of amorphous carbon coatings." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/27142.

Full text
Abstract:
Dans ce projet de recherche, le dépôt des couches minces de carbone amorphe (généralement connu sous le nom de DLC pour Diamond-Like Carbon en anglais) par un procédé de dépôt chimique en phase vapeur assisté par plasma (ou PECVD pour Plasma Enhanced Chemical Vapor deposition en anglais) a été étudié en utilisant la Spectroscopie d’Émission Optique (OES) et l’analyse partielle par régression des moindres carrés (PLSR). L’objectif de ce mémoire est d’établir un modèle statistique pour prévoir les propriétés des revêtements DLC selon les paramètres du procédé de déposition ou selon les données a
APA, Harvard, Vancouver, ISO, and other styles
24

Van, Order Jon P. "Molecular modeling of intermediate order in polymer glasses." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/10134.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Kazi, Haseeb. "Plasma Interactions on Organosilicate Glass Dielectric Films and Emerging Amorphous Materials- Approach to Pore Sealing and Chemical Modifications." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc801876/.

Full text
Abstract:
In-situ x-ray photoemission (XPS) and ex-situ FTIR studies of nanoporous organosilicate glass (OSG) films point to the separate roles of radicals vs. VUV photons in the carbon abstraction. The studies indicate that reaction with O2 in presence of VUV photons (~123 nm) result in significant carbon abstraction within the bulk and that the kinetics of this process is diffusion-limited. In contrast, OSG exposed to atomic O (no VUV) results in Si-C bond scission and Si-O bond formation, but this process is self-limiting after formation of ~1 nm thick SiO2 surface layer that inhibits further diffusi
APA, Harvard, Vancouver, ISO, and other styles
26

Marshall, Gillian E. "Thermal annealing and superconductivity in Zr based metallic glasses." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65501.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Shrestha, Kiran (Engineer). "Electrical Conduction Mechanisms in the Disordered Material System P-type Hydrogenated Amorphous Silicon." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700106/.

Full text
Abstract:
The electrical and optical properties of boron doped hydrogenated amorphous silicon thin films (a-Si) were investigated to determine the effect of boron and hydrogen incorporation on carrier transport. The a-Si thin films were grown by plasma enhanced chemical vapor deposition (PECVD) at various boron concentrations, hydrogen dilutions, and at differing growth temperatures. The temperature dependent conductivity generally follows the hopping conduction model. Above a critical temperature, the dominant conduction mechanism is Mott variable range hopping conductivity (M-VRH), where p = ¼, and th
APA, Harvard, Vancouver, ISO, and other styles
28

Duque, Jose Gerivaldo dos Santos. "Magnetoimpedância gigante linear e não-linear em ligas amorfas." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278277.

Full text
Abstract:
Orientador: Marcelo Knobel<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-04T08:20:32Z (GMT). No. of bitstreams: 1 Duque_JoseGerivaldodosSantos_D.pdf: 2802085 bytes, checksum: 3e11d0645c4b8e47c4e251b671065013 (MD5) Previous issue date: 2005<br>Resumo: Não informado<br>Abstract: Not informed.<br>Doutorado<br>Física da Matéria Condensada<br>Doutor em Ciências
APA, Harvard, Vancouver, ISO, and other styles
29

Maldei, Michael. "A study of the suitability of amorphous, hydrogenated carbon (a-C:H) for photovoltaic devices." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1175022667.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Manoharan, Krishna. "Design and Analysis of High-Q, Amorphous Microring Resonator Sensors for Gaseous and Biological Species Detection." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1237489189.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Malaguti, Vilmar dos Santos. "Reuso de água e resíduos gerados pela lavagem de caminhões betoneiras: análise do efeito na resistência à compressão de concreto usinado." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1886.

Full text
Abstract:
O objetivo deste trabalho é analisar a resistência à compressão do concreto e seus possíveis efeitos com o reuso da água e dos resíduos de lavagens dos caminhões betoneiras. A revisão bibliográfica sobre o assunto proposto foi estudado e discutido em países como Grécia, Taiwan, Alemanha, Itália, Cingapura e outros, o que serviu de apoio e reforço para este trabalho. O método para analisar a resistência à compressão foi de comparação entre uma amostra controle (traço padrão de 30 MPa) e amostras com diferentes composições. O resultado de cada amostra foi diferente em função de sua composição, n
APA, Harvard, Vancouver, ISO, and other styles
32

Dehlinger, Nicolas. "Étude des performances d'une machine à flux transverse à noyaux ferromagnétiques amorphes." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24934/24934.pdf.

Full text
Abstract:
Parmi les différentes structures de machines électriques existantes, les machines à flux transverse (MFT) sont reconnues pour leur fort couple massique et volumique. Malgré cet avantage, leur complexité et leur coût de fabrication élevés font que ce type de machine ne dépasse que rarement le stade de prototype. De plus, d’importantes pertes fer dues à des fréquences de fonctionnement élevées limitent encore l’utilisation de ces machines aux applications basse vitesse et fort couple : la MFT est alors principalement utilisée dans des dans les aérogénérateurs à attaque directe et dans certaines
APA, Harvard, Vancouver, ISO, and other styles
33

Mpingi, Wilfred Mbiombi. "Structural, electrical and electronic properties of diamond like carbon (DLC) and carbon-based materials." Thesis, 2014.

Find full text
Abstract:
this work, we have used the diamond-like carbon (DLC) also known as hydrogenated amorphous carbon (a-C:H), silicon doped DLC (a-C:H:Si) thin films deposited by the plasma enhanced chemical vapour deposition (PECVD) process on silicon substrate and studied their structural, electrical and electronic properties. The DLCs films were prepared at different applied bias voltage (Vb) starting from 100V to 600V; whereas the silicon is doped with DLC thin films using tetramethysilane (TMS) as a precursor at different standard centimetre cube per minute (sccm). In addition nitrogen doped amorphous carbo
APA, Harvard, Vancouver, ISO, and other styles
34

Safarik, Douglas Joseph. "Crystallization of amorphous solid films." 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3116175.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

McClure, Sean Michael. "Transport mechanisms in nanoscale amorphous solid water films." Thesis, 2006. http://hdl.handle.net/2152/2575.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

"preparation of bulk amorphous Pd₄₀Ni₄₀P₂₀ alloys by compaction." 2001. http://library.cuhk.edu.hk/record=b5890792.

Full text
Abstract:
Ma Lai Ching = 利用熱壓法制備塊体非晶態Pd₄₀Ni₄₀P₂₀合金 / 馬勵貞.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2001.<br>Includes bibliographical references (leaves 51).<br>Text in English; abstracts in English and Chinese.<br>Ma Lai Ching = Li yong re ya fa zhi bei kuai ti fei jing tai Pd₄₀Ni₄₀P₂₀ he jin / Ma Lizhen.<br>Acknowledgements --- p.i<br>Abstract --- p.ii<br>Chapter Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Introduction to Metallic Glass --- p.1<br>Chapter 1.2 --- Applications of Metallic Glass --- p.2<br>Chapter 1.3 --- Solidification Process --- p.3<br>Chapter 1.4 --- Some
APA, Harvard, Vancouver, ISO, and other styles
37

Tiwari, Rashmi Satyanarayan. "A new determination of molecular mobility in amorphous materials." 2008. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051222.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

"Crystallization kinetics of amorphous nanostructured materials =: 非晶納米結構材料的結晶動力學". 1998. http://library.cuhk.edu.hk/record=b5889731.

Full text
Abstract:
Ngai Hau Wai.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1998.<br>Includes bibliographical references.<br>Text in English; abstract also in Chinese.<br>Ngai Hau Wai.<br>Acknowledgements --- p.ii<br>Abstract --- p.iii<br>Chapter Chapter 1: --- Introduction --- p.1<br>Chapter 1.1 --- History of nanomaterials --- p.1<br>Chapter 1.2 --- Application and properties of nanomaterials --- p.2<br>Chapter 1.3 --- Thermodynamic of a binary system --- p.4<br>Chapter 1.4 --- Nucleation and growth --- p.5<br>Chapter 1.5 --- Spinodal decomposition --- p.7<br>References --- p.10<br>Figures
APA, Harvard, Vancouver, ISO, and other styles
39

"Formation and crystallization of amorphous nanostructured materials =: 非晶納米材料的形成與結晶". 1998. http://library.cuhk.edu.hk/record=b5889706.

Full text
Abstract:
by Leung Ching Chuen.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1998.<br>Includes bibliographical references (leaf 47).<br>Text in English; abstract also in Chinese.<br>by Leung Ching Chuen.<br>Acknowledgments --- p.ii<br>Abstract --- p.iii<br>Chapter Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Expansion of the Mesoscopic World --- p.2<br>Chapter 1.2 --- Nanostructured Materials --- p.3<br>Chapter 1.3 --- A New Age --- p.4<br>Chapter 1.4 --- """Flaws"" of the New Age" --- p.5<br>Chapter 1.5 --- Phase Transformation --- p.7<br>Chapter 1.6 --- Nucleation and Growth
APA, Harvard, Vancouver, ISO, and other styles
40

Knutson, Christopher C. "The chemistry and device applications of amorphous thin-film interfaces." Thesis, 2011. http://hdl.handle.net/1957/26076.

Full text
Abstract:
Solid-state amorphous materials show amazing promise in thin-film electronics. The interface-to-bulk ratio of thin films makes interfacial chemistries of these systems of utmost importance. Thin films of amorphous metals, dielectrics and semiconductors have novel chemistries that are not only based upon their elemental constituent makeup, but also based upon the method with which the amorphous material is deposited and treated after deposition. The chemical attributes unique to amorphous, thin-film systems are defined primarily through the utilization of solution-processed aluminum oxide phosp
APA, Harvard, Vancouver, ISO, and other styles
41

Akin, Minta Carol 1980. "Low-energy electron driven reactions in layered methanol/amorphous solid water films." Thesis, 2008. http://hdl.handle.net/2152/3815.

Full text
Abstract:
Understanding the radiolysis of impure water and resulting reactions is crucial to many fields. Reactions driven by low energy electrons (LEE) are of special interest, as high-energy radiation generates large quantities of these electrons, which then provide the energy for most subsequent reactions. Interfacially located reactions are also of particular interest, both as models for heterogeneously distributed reactions occurring during radiolysis, and in their own right, as radiation-driven reactions at interfaces are responsible for key processes such as corrosion and DNA damage. To study LEE
APA, Harvard, Vancouver, ISO, and other styles
42

You, Yumin. "Modulation of molecular mobility in sucrose-based amorphous solids detected by phosphorescence of erythrosin B." 2007. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17034.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Valanathan, Munsami. "Experimental investigation and theoretical analysis of the structural relaxation in amorphous Fe40Ni40B20." Thesis, 1998. http://hdl.handle.net/10413/4630.

Full text
Abstract:
Amorphous metallic alloys are produced by a variety of techniques some of which involve rapid solidification of the alloying constituents. In these methods the solidification occurs so rapidly that the atoms are frozen-in and partially retain their liquid configuration. There are clear structural and other indications from their various properties that amorphous metallic alloys possess short range order but lack long range order. In general, amorphous alloys are not in a thermodynamic equilibrium state and, therefore, relax structurally whenever atoms attain an appreciable mobility. Associated
APA, Harvard, Vancouver, ISO, and other styles
44

"Preparation of bulky ferromagnetic Fe₈₀P₁₃C₇ amorphous alloy." 2000. http://library.cuhk.edu.hk/record=b5890327.

Full text
Abstract:
Chan Fu-wai = 非晶態鐵磁性鐵-磷-碳合金的製作 / 陳輔偉.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2000.<br>Includes bibliographical references.<br>Text in English; abstracts in English and Chinese.<br>Chan Fu-wai = Fei jing tai tie ci xing tie-lin-tan he jin de zhi zuo / Chen Fuwei.<br>Acknowledgments --- p.i<br>Abstract --- p.ii<br>Table of Content --- p.iv<br>Chapter Chapter 1: --- Introduction --- p.1<br>Chapter 1.1 --- Nucleation --- p.1<br>Chapter 1.1.1 --- Homogenous nucleation --- p.1<br>Chapter 1.1.2 --- Heterogeneous nucleation --- p.4<br>Chapter 1.2 --- The crystal growth --- p.5<b
APA, Harvard, Vancouver, ISO, and other styles
45

Matteucci, Michal Elizabeth 1977. "Highly supersaturated aqueous solutions by design of amorphous pharmaceutical nanoparticles." 2007. http://hdl.handle.net/2152/16019.

Full text
Abstract:
For 40% of currently discovered drugs which are poorly water soluble, engineering amorphous nanoparticles with rapid dissolution and enhanced solubility can improve their absorption. Antisolvent precipitation by mixing organic drug solutions with aqueous solutions produced sub-300 nm amorphous nanoparticle dispersions. Polymeric stabilizers increased the nucleation rate by lowering the interfacial tension and adsorbed to particle surfaces to inhibit growth by condensation and coagulation. An increase in the stabilizer concentration decreased the average particle size until reaching a thresh
APA, Harvard, Vancouver, ISO, and other styles
46

"Amorphous phase separation in a bulk metallic glass of negative heat of mixing." 2012. http://library.cuhk.edu.hk/record=b5549408.

Full text
Abstract:
過去幾十年當中,金屬玻璃(包括塊狀金屬玻璃)中非晶相分離的發生已經成為了一個具有爭議性的課題。一些報告報導在具有負混合熱的Pd-Ni-P合金體系中發生了非晶相分離。然而,有一些報告聲稱相分離不能在Pd-Ni-P非晶合金中被觀察到。文獻分析表明,困難在於缺乏直接的實驗證據。<br>為了解決這個難題,示差掃描量熱儀、高分辨電子顯微鏡、掃描透射模式下的高角環射暗場相、以及能量色散X射線光譜儀等檢測儀器在我們實驗當中被使用。同時為了清楚展示非晶相分離反應,在過冷Pd₄₁.₂₅Ni₄₁.₂₅P₁₇.₅熔體被冷卻為固態非晶樣品之前引入了中間熱退火處理。<br>實驗研究了三種經由不同路徑製備的A、B、C型號樣品。結果表明在非晶/液態Pd₄₁.₂₅Ni₄₁.₂₅P₁₇.₅合金中可能存在獨特的短程有序結構,它會導致相分離的發生。同时研究發現,在大約625 K,調幅分解的持續時間的下限大概是200 s。調幅分解的時間常數R在大約625 K 下為0.002 s⁻¹。三种类型样品在不同的溫度下被退火從而獲得部分的結晶。A型號和B型號具有相似的行為。在低溫下,圓形的核心首先形成,接著發生共晶反應。在高溫下,出現了一種形狀為立方體的析出相。在C型號的樣品當中,核心和立方的析出物同時被發現。但是核心的成分分佈與A和B型號中出現的不同。同時,隨著退火時間的加長形核的數量也具有獨特的行為表現。作為對比,Pd₄₀Ni
APA, Harvard, Vancouver, ISO, and other styles
47

Hsu, Lung-chern, and 許榮宸. "Calculation and Conformatuonal Analysis of Starburst Amorphous TPA-derived Substances for Organic Light Emitting Diode(OLED)." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/06785960541502084906.

Full text
Abstract:
碩士<br>國立成功大學<br>化學系專班<br>96<br>We used DFT B3LYP/6-31g*method to calculate TDATA(4,4'4"-tris (diphenylamino)triphenyl) and TDAB(1,3,5-tris-(diphenylamine)benzene) TDAPB(1,3,5-tris(4-diphenylaminophenyl)benzene.the main difference in its certre unit,TDATA regards atom of nitrogen as the centre.TDAPB and TDAB regards phenyl ring as the centre.TDAPB and TDAB difference lie in the centre phenyl ring connects triphenylamine and diphenylamine.In the energy level that these starburst amorphous molecular appear high HOMO and ionization potential is TDAB>TDAPB>TDATA.connect as it methyl and fluoro subs
APA, Harvard, Vancouver, ISO, and other styles
48

Sheppard, Charles Johannes. "Structural and optical characterization of Si:H and ZnO." Thesis, 2008. http://hdl.handle.net/10210/1365.

Full text
Abstract:
M.Sc.<br>Thin film solar cell devices based on amorphous silicon absorber films are promising candidates for the efficient conversion of sunlight into useable, cheap electrical energy. However, typical device structures are rather complex and consist of semiconductor/metal contacts as well as a complicated p-i-n junction. Against this background, the present study focussed on the optimization of certain key components of the device, including the transparent conductive oxide, amorphous silicon absorber layers and substrate/metal structures. These thin films were deposited by direct current (DC
APA, Harvard, Vancouver, ISO, and other styles
49

Cowell, E. William III. "Electronic device and nanolaminate application of amorphous metal thin films." Thesis, 2012. http://hdl.handle.net/1957/29124.

Full text
Abstract:
The objective of this dissertation is to develop amorphous metal thin films (AMTFs) for two-terminal electrical device and nanolaminate applications. Two AMTFs, ZrCuAlNi and TiAl, are investigated in both two-terminal electrical device and nanolaminate applications. Material properties including composition, atomic order, surface morphology, surface potential, and electrical resistivity are explored. Application of AMTFs as electrodes in tunneling MIM diodes leverages the ultra-smooth AMTF surface morphology which results from the amorphous atomic order of AMTFs. Analysis methodologies using t
APA, Harvard, Vancouver, ISO, and other styles
50

"Preparation and characterization of bulk amorphous and nanostructured iron-40 nickel-40 phosphorus-14 boron-6 alloys." 2002. http://library.cuhk.edu.hk/record=b6073403.

Full text
Abstract:
"Apr 2002."<br>The numerals in title is subscript.<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 2002.<br>Includes bibliographical references.<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Mode of access: World Wide Web.<br>Abstracts in English and Chinese.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!