Tesi: "Experimental films"

1

Hess, Nicole A. "Imagining independence the circulation and thematic concerns of independent film from Hong Kong and China /". Thesis, Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36726102.

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2

Carter-Hansen, Jill, University of Western Sydney e of Performance Fine Arts and Design Faculty. "Travelling light - with a case for discovery : the making of the film Songs of the Immigrant Bride". THESIS_FVPA_XXX_CarterHansen_J.xml, 1997. http://handle.uws.edu.au:8081/1959.7/680.

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This paper examines the background, development and production of the film ‘Songs of the immigrant bride’ and explains the general decisions made throughout the creation of the film. It proposes the idea that visuals, combined in an abstract narrative with music/sound, can create a language outside that generally accepted in real-time film (generally) and animation (specifically) to create a communicating ‘mythopoetic’ film-style from combined, selected elements, of both genres. Some of the issues presented and examined are: how relevant background experiences and influences directed the image-making in the production of the film; the experimental use of symbols and metaphor for an ‘evocative’ narrative in both visuals and sound, and the use of these within the film; the relevance of the theme of journey to viewers of the film; the part played by ‘Chance’ as an accepted phenomenon in shaping the direction of the film; production considerations, other than those of image and sound, to enhance audience perception and understanding of the film; ‘understanding’, as a physical as well as an intellectual phenomenon
Master of Arts (Hons)

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3

Danino, Regina. "Experimental film : Catholic and feminist readings of my films (2010-2016)". Thesis, University of Westminster, 2017. https://westminsterresearch.westminster.ac.uk/item/q32q8/experimental-film-catholic-and-feminist-readings-of-my-films-2010-2016.

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The commentary addresses the works in the Research Portfolio (2010-2016) which consists of three films and one multi-media installation. These films are experimental but look very different from my previous work. This reflects my decision to address figuration and realist representation in order to expand and develop my experimental film language. The works are collective and individual portraits of women in monastic life, and one is a portrait of a young girl in a Catholic iconography. In these new works I find out what happens when you insert direct works about religion into an art space that is not expecting them and has no context ready for them. My aim is to see how that changes and tests the binaries of religion/art, traditional/experimental. The commentary investigates the works through a Catholic framing/perspective; close reading as a method of viewing the work, and a feminist analysis that provides gendered readings of the works. These three come together to open a space of reflection and a critical perspective on the films. The commentary shows how the works open a space for a religious subject to emerge: one not hitherto represented in the context of experimental film.

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4

Fernandes, Helmut Paulus Kleinsorgen Paes Ferreira. "Etnografias de si: a emergência dos filmes pessoais". Universidade do Estado do Rio de Janeiro, 2006. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1026.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Ao enfocar o filme de família no contexto da produção pós-moderna, esta dissertação tem por intenção debater a questão da autenticidade, bem como o processo de legitimação cultural de sub-gêneros fílmicos afins surgidos na década de 60, como o filme diário e o filme pessoal. A proliferação deste tipo de produção uma espécie de meio-termo entre auto-etnografias e filmes de arte - desafia as ciências sociais e, mais especificamente, a antropologia visual contemporânea a compreender a emergência de novas formas audiovisuais de representação social. A partir do estudo pioneiro de Bourdieu sobre a função social da fotografia, debate-se a estetização do território familiar e a função social do filme amador.
Focusing on the home movies in the context of post-modern culture, this dissertation intends to debate the question of authenticity, as well as the process of cultural legitimation of filmic sub-genres originated in the sixties: the diary film and the personal film. The proliferation of this type of film production something in-between the autoethnographies and the art films challenges the social sciences and, more specifically, the contemporary visual anthropology to understand the appearance of new audiovisual forms of social representation. The important work of Bourdieu on the social rules of photography is a starting point to debate the aesthetics of private family domain and the social rules of amateur film

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5

Karafin, Jon. "Somnambulance : an experimental film /". Online version of thesis, 2008. http://hdl.handle.net/1850/7902.

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6

Swan, R. "Experimental studies of thin tellurium films". Thesis, London South Bank University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618631.

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7

Swan, Ronnie. "Experimental studies of thin tellurium films". Thesis, London South Bank University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316966.

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8

Mikhail, Samia, e fasisami@netspace net au. "The experimental art of Arthur and Corinne Cantrill". RMIT University. Applied Communication, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20061222.094324.

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This thesis analyses the effect of the personal history of Arthur and Corinne Cantrill, two Australian independent filmmakers, on their style of filmmaking. It analyses their representation of film-form experimentation within national Australian art in a range of independent film works. It reflects on their cultural relation to the general history of independent filmmaking in Australia, America and Europe. It studies the circumstances tat resulted in the appearance of the Cantrills' experimental film and their relation to international art theories and film experimentation. This thesis will examine how the Cantrills' film works, which were often critical of conventional filmmaking styles, and their critical writing, statements and promotion of their independent and experimental film work contributed significantly to theoretical discussion and argument about the physical nature of film within Australia. This examination is explored through asking and answering the central question: The work of Aurtheur and Corinne Cantrell is theoretically drawn from a tradition of European arts and visually drawn from Australian landscape and urban culture; can their work be identified and undertood as Australian art?

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9

Gochoco, Michael. "Variations /". Online version of thesis, 2008. http://hdl.handle.net/1850/7796.

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10

Jafri, Syed Zaki. "Experimental investigation of dielectric strength of polymer films". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62224.pdf.

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11

Neumann, Michael. "Experimental investigation of 'He Films Adsorbed on Graphite'". Thesis, Royal Holloway, University of London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500129.

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12

Au-Yeung, Shing. "Hong Kong's Alternative Film and Video movement as an agent for social change". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36243693.

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13

Pontes, Debora da Silva Lima [UNESP]. "Filmes finos ferroelétricos do tipo PBCT, PBST e PCST: estudo experimental e teórico". Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/106648.

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Made available in DSpace on 2014-06-11T19:35:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-24Bitstream added on 2014-06-13T19:25:22Z : No. of bitstreams: 1 pontes_dsl_dr_bauru.pdf: 4536733 bytes, checksum: 0e0e50403b6e1c3dfec710c1dc43dff6 (MD5)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Perovisquita é a estrutura mais comum vista nos materiais ferroelétricos, a qual tem sido amplamente utilizado na indústria de dispositivos nas últimas décadas. Dentre essa classe de materiais o PbTiO3 é um dos materiais extensamente estudado devido a sua ampla faixa de aplicações como, por exemplo, capacitores, sensores piroelétrico e piezelétricos, memórias ferroelétricas. A substituição do Pb2+ pelos íons Ba2+/Ca2+, Ba2+/Sr2+ e Ca2+/Sr2+ no siste ma PbtiO3, a qual conduziu a formação de sistemas PBCT, PBST e PCST, produziu varias mudanças nas propriedades elétricas e estruturais desses materiais. No entanto, poucos trabalhos têm sido dedicados a esses sistemas baseado numa incorporação complexa de dois diferentes íons no sítio A, com relação a um profundo estudo teórico e experimental. A caracterização experimental por difração de raios X, espectroscopia micro-Raman e FT-IR mostram uma diminuição no grau de tetragonalidade para esses materiais. Essa alteração estrutural em função dos substituintes foi também responsável pela diminuição do grau de polarização. Nesta tese, foi aplicado também o método computacional dos primeiros princípios para estudar esta importante classe de materiais. A estrutura eletrônica, energia do banc gap, a densidade e estados (DOS) nos cristais ferroelétricos PBCT, PBST e PCST foram estudadas usando a teoria do funcional de densidade combinada com B3LYP. Os resultados teóricos foram correlacionados com os resultados experimentais para investigar e interpretar melhor a influência dos pares de íons Ba/Ca, Ba/Sr e Ca/Sr na ferroeletricidade do sistema PT. Pela análise teórica o grau de polarização bem como de tetragonalidade diminuiu no sistema PCST comparado ao PBCT e PBST, devido à presença agora de um forte caráter de ligações iônicas dentro...
Perovskites are the most commonly seen ferroelectrics, which have been widely used in the industry of devices in the last few decades. In addition, Lead titanate (PbTiO3) is an extensively studied material wich a wide range of application, for intance as capacitors, piezoeletric and pyroelectric sensors and ferroelectric memories. The substitution of Pb2+ ions Ba2+/Ca2+, Ba2+/Sr2+ e Ca2+/Sr2+ ions in the PbTiO3 system, which leads to the formation of the PBCT, PBST e PCST systems, induces several change in the electric and structural properties of these materials. However, PBCT, PBST and PCST systems based on the complex incorporation of two different ions at site A have not been thoroughly investigated and the literature contains few reports concerning their experimental and theoretical study of these materials. The characterization with X-ray diffraction, Raman spectroscopy and spectroscopy techniques on the infrared region of these samples showed a decrease of the tetragonality degree. These structural modifications were also responsible by the decrease in the polarization degree of these samples. In this thesis, we also have applied first-principles computational methods to the study this important class of materials. The electronic structure, energy band structure, and density of states (DOS) in ferroelectric crystal PBCT and PCST are studied by using density functional theory (DFT) combined with the B3LYP. The theoretical results were correlated with experimentals results to investigate and interpret better the influence of pairs of ions Ba/Ca, Ba/Sr and Ca/Sr on the ferroelectricity of the system PT. By theoretical analysis the degree of polarization as well as ferroelectricity in the PCST decreased compared with the systems PBCT and PBST, due to the presence of strong ionic character in this crystal... (Complete abstract click electronic access below)

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14

Flammersberger, Hendrik. "Experimental study of Cu2ZnSnS4 thin films for solar cells". Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-139198.

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Cu2ZnSnS4 (CZTS) is a semiconductor with a direct band gap of about 1,5 eV and anabsorption coefficient of 10^4 cm^-1, and is for this reason a potential thin film solarcell material. Demonstrated efficiencies of up to 6,8% as well as use of cheap andabundant elements make CZTS a promising alternative to current solar cells.The aim of this study was to fabricate and characterize CZTS films and to evaluatetheir performance in complete solar cells. For the fabrication of CZTS we applied atwo-step process consisting of co-sputtering of the metal or metal-sulphurprecursors, and subsequent sulphurization by heating at 520°C in sulphur atmosphereusing sealed quartz ampoules.The work included a systematic comparison of the influence of composition on qualityand efficiency of CZTS solar cells. For this purpose films with various metallic ratioswere produced. The results show that the composition has a major impact on theefficiency of the solar cells in these experiments. Especially zinc-rich, copper-poor andtin-rich films proved to be suitable for good cells. The worst results were received forzinc-poor films. An increase in efficiency with zinc content has been reportedpreviously and was confirmed in this study. This can be explained by segregation ofdifferent secondary phases for off-stochiometric compositions. According to thephase diagram, zinc-poor films segregate mainly copper sulfide and copper tin sulfidecompounds which are conductive and therefore detrimental for the solar cell. Zincsulfide, that is supposed to be present in the other regions of the phase diagramexamined in this study, could be comparatively harmless as this secondary phase isonly isolating and by this ’just’ reduces the active area. This is less disadvantageousthan the shunting that can be caused by copper sulfides. Contrary to the efficiencyresults, metal composition had no major impact on the morphology.A comparison of the composition before and after the sulphurization revealed thatmetal precursors showed higher tin losses than sulphur containing precursors. Apossible explanations for this was given.Another central point of this work was the examination of the influence of sulphur inthe precursor. Less need of additional sulphur in the film might lead to better materialquality. This is based on the assumption that the film is subjected to less diffusion ofthe elements and so to less dramatic changes within the film, which might result infewer voids and defects. However, our experiments could find only a weak trend thatsulphur in the precursor increases the performance of the solar cells; concerningmorphology it was observed that more compact films with smaller grains developfrom metal-sulphur-precursors.The best efficiency measured within this work was 3,2%.

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15

Ferrari, Matthew P. "Mysterious Objects of Knowledge: An Interpretation of Three Feature Films by Apichatpong Weerasethakul in Terms of the Ethnographic Paradigm". Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1150466591.

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16

Pontes, Debora da Silva Lima. "Filmes finos ferroelétricos do tipo PBCT, PBST e PCST : estudo experimental e teórico /". Bauru : [s.n.], 2012. http://hdl.handle.net/11449/106648.

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Orientador: Elson Longo da Silva
Banca: Alberthmeiry Teixeira de Figueiredo
Banca: Alejandra Hortencia Miranda Gonzáles
Banca: Marcia Tsuyama Escote
Banca: Maria Fernanda do Carmo Gurgel
O Programa de Pós Graduação em Ciência e Tecnologia de Materiais, PosMat, tem caracter institucional e integra as atividades de pesquisa em materiais de diversos campi
Resumo: Perovisquita é a estrutura mais comum vista nos materiais ferroelétricos, a qual tem sido amplamente utilizado na indústria de dispositivos nas últimas décadas. Dentre essa classe de materiais o PbTiO3 é um dos materiais extensamente estudado devido a sua ampla faixa de aplicações como, por exemplo, capacitores, sensores piroelétrico e piezelétricos, memórias ferroelétricas. A substituição do Pb2+ pelos íons Ba2+/Ca2+, Ba2+/Sr2+ e Ca2+/Sr2+ no siste ma PbtiO3, a qual conduziu a formação de sistemas PBCT, PBST e PCST, produziu varias mudanças nas propriedades elétricas e estruturais desses materiais. No entanto, poucos trabalhos têm sido dedicados a esses sistemas baseado numa incorporação complexa de dois diferentes íons no sítio A, com relação a um profundo estudo teórico e experimental. A caracterização experimental por difração de raios X, espectroscopia micro-Raman e FT-IR mostram uma diminuição no grau de tetragonalidade para esses materiais. Essa alteração estrutural em função dos substituintes foi também responsável pela diminuição do grau de polarização. Nesta tese, foi aplicado também o método computacional dos primeiros princípios para estudar esta importante classe de materiais. A estrutura eletrônica, energia do banc gap, a densidade e estados (DOS) nos cristais ferroelétricos PBCT, PBST e PCST foram estudadas usando a teoria do funcional de densidade combinada com B3LYP. Os resultados teóricos foram correlacionados com os resultados experimentais para investigar e interpretar melhor a influência dos pares de íons Ba/Ca, Ba/Sr e Ca/Sr na ferroeletricidade do sistema PT. Pela análise teórica o grau de polarização bem como de tetragonalidade diminuiu no sistema PCST comparado ao PBCT e PBST, devido à presença agora de um forte caráter de ligações iônicas dentro... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Perovskites are the most commonly seen ferroelectrics, which have been widely used in the industry of devices in the last few decades. In addition, Lead titanate (PbTiO3) is an extensively studied material wich a wide range of application, for intance as capacitors, piezoeletric and pyroelectric sensors and ferroelectric memories. The substitution of Pb2+ ions Ba2+/Ca2+, Ba2+/Sr2+ e Ca2+/Sr2+ ions in the PbTiO3 system, which leads to the formation of the PBCT, PBST e PCST systems, induces several change in the electric and structural properties of these materials. However, PBCT, PBST and PCST systems based on the complex incorporation of two different ions at site A have not been thoroughly investigated and the literature contains few reports concerning their experimental and theoretical study of these materials. The characterization with X-ray diffraction, Raman spectroscopy and spectroscopy techniques on the infrared region of these samples showed a decrease of the tetragonality degree. These structural modifications were also responsible by the decrease in the polarization degree of these samples. In this thesis, we also have applied first-principles computational methods to the study this important class of materials. The electronic structure, energy band structure, and density of states (DOS) in ferroelectric crystal PBCT and PCST are studied by using density functional theory (DFT) combined with the B3LYP. The theoretical results were correlated with experimentals results to investigate and interpret better the influence of pairs of ions Ba/Ca, Ba/Sr and Ca/Sr on the ferroelectricity of the system PT. By theoretical analysis the degree of polarization as well as ferroelectricity in the PCST decreased compared with the systems PBCT and PBST, due to the presence of strong ionic character in this crystal... (Complete abstract click electronic access below)
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17

Lord, John. "Thin lubricating films in elastohydrodynamic contacts : experimental techniques and applications /". Luleå, 2004. http://epubl.luth.se/1402-1544/2004/016.

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18

Dickie, Adam J. "Molecularly self-assembled thin films : theoretical evaluation and experimental fabrication". Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82854.

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New techniques to describe and optimize organization in self-assembled monolayers constructed on solid semiconductor surfaces are reported. Acid-base hydrolytic chemistry of surface anchored [Sn]-NEt2 moieties with alkyne-terminated chromophores has been used to construct close packed thin films of good structural quality on Si(100)/SiO2 substrates. These films exhibit enhanced optical and electrical properties on the surface because of extensive conjugation within the adsorbed molecules, and offer significant potential to develop new nanoscale technologies using tailored properties that meet device purposes.
The discrete surface organization of 1,9-decadiyne and p-diethynylbenzene monolayers on Si(100)/SiO2/SnO2 surfaces is determined with a unique and powerful molecular modelling approach, using rigid geometry scans and periodic geometry optimizations. Geometric arguments produce the monolayer packing space, and rapid optimizations give small, repeating symmetric unit cells that correctly represent an infinite monolayer surface. Semi-empirical analysis of the monolayer symmetry units classifies the infinite thin films as semiconducting materials, because of organized pi-orbital overlap and the presence of acceptor bands from the Sn headgroups.
Headgroup bonding is identified as a force for controlling monolayer order. At natural surface packing densities, Sn-O-Sn cross-linking prevents optimal organization of the monolayer because the cross-link distance is smaller than the preferred packing separation of organic chromophores. Optimizations at unnatural surface densities found thin films of lower energy and higher symmetry existed at increased chain-chain separations.
Thin films with adjustable characteristics were created by using binary surface activation units to selectively adsorb different organic molecules. Functionalization of oxide surfaces with statistical mixtures of Si(NR 2)4 and Sn(NR2)4, followed by sequential adsorption of alkynyls at Sn sites, then alcohols at free Si positions, produced randomly ordered films because of unfavourable headgroup interactions. Linking the headgroups, as (NMe2)3SiO-X-C≡C-Sn(NEt 2)3 (X = -(CH2)n-, p-C 6H4-) surface activation units, greatly improves thin film order by preventing phase separation, and increasing average chain-chain distances. Monolayers organize as linear, nanoscale rows and serve as templates for the nucleated crystallization of functionalized chromophores directly from the reaction mixture. Self-generating arrays of highly coloured dendritic crystals, with potential optoelectronic activity, are observed to form directly on solid-state electronic interfaces.

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19

Bu, Lei. "Computational and experimental studies of strain sensitive carbon nanotube films". Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-156473.

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The excellent electrical and mechanical properties of carbon nanotubes (CNTs) provide interesting opportunities to realize new types of strain gauges. However, there are still challenges for the further development of CNT film strain gauges, for instance the lack of design rules, the homogeneity, stability and reproducibility of CNT films. This thesis aims to address these issues from two sides: simulation and experiment. Monte Carlo simulations show that both the sheet resistance and gauge factor of CNT films are determined essentially by the two-dimensional exclude area of CNTs. It was shown, for the first time, that the variation of the CNT film gauge factor follows the percolation scaling law. The sheet resistance and gauge factor both have a power-law divergence when approaching the percolation threshold. The standard deviation of film resistances, however, also increases correspondingly. These findings of simulations provide a general guide to the tailoring of material property of CNT films in strain sensing applications: a compromise should be made between the reproducibility, conductivity and sensitivity of CNT films depending on application purposes. From the experimental side, the processing parameters for the preparation of CNT dispersions were first investigated and optimized. The reproducibility of the film resistance is significantly improved by selecting a suitable sonication time. In strain measurements it was found that for most CNT films the film resistance responses nonlinearly to the applied strain. The dependence of the film resistance on the strain can be roughly divided into two regions with nearly linear behavior respectively. The gauge factor varies with the quality of CNTs and the depositing method. A gauge factor up to 8 was achieved in the high strain region. The nonlinear response behavior was found in simulations when the CNT waviness is properly taken into account. To achieve a high gauge factor and simultaneously retain the high conductivity and reproducibility, good-quality MWCNTs were integrated in polyethylene oxide (PEO). A high gauge factor up to 10 was achieved for the composite film with CNT weight fraction of 2.5%. The resistance and gauge factor can be tuned by changing the MWCNT weight fraction with respect to PEO. A careful comparison of simulation and experiment results show that a good qualitative agreement can be achieved between them in many respects.

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20

Patel, Hetal. "Experimental study of two-dimensional helium mixture films absorbed on graphite". Thesis, Royal Holloway, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252098.

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3He-4He mixture films adsorbed on graphite were studied down to temperatures below 1 mK using heat capacity and nuclear magnetic resonance (NMR) to probe the system. This work represents the first measurements in this temperature range of the various systems studied. The work focused on two types of mixtures, 3He °He mixtures within the second layer, and 'He floating on three layers of 4He. For mixtures within the layer, a homogeneous mixed phase was observed, followed by a phase interpreted as a Fermi liquid of 'He quasiparticle excitations tunneling within a solid 'He lattice. For the second type of mixture, the expected occupancy of the first excited surface normal state was observed. This is accompanied by anomalous behaviour at low temperatures (T < 10 mK) which arises due to a low concentration of 3He atoms being pushed into the third superfluid 4He layer. An NMR spectrometer utilising a cooled differential preamplifier operating at 4K was developed and used to measure the magnetic properties of helium mixtures. However, its signal to noise ratio was too low to provide the required accuracy in the measurements. An automated computer controlled data acquisition system was also developed to measure heat capacity and magnetic properties of the mixtures. The accompanying software required to process the data collected from both types of measurements was also developed and used successfully to obtain the data presented in this thesis

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21

Shellabarger, Brian Tebelman. "Experimental studies of high-speed liquid films on flat and curved downward-facing surfaces for IFE applications". Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180413/unrestricted/shellabarger%5fbrian%5ft%5f200312%5fms.pdf.

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22

Parks, Carl L. "An experimental approach for studying the creep behavior of thin film/ substrate interfaces". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FParks.pdf.

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23

Lamb, R. N. "An experimental study of thin film physisorption and chemisorption". Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233916.

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The physical adsorption of a liquid film and the chemisorption of a solid polymer film were investigated from macroscopic and microscopic viewpoints respectively. The vapour adsorption and subsequent formation of thin equilibrium hexane films (<30AA ) on a mica substrate (initially in ultra high vacuum) was examined. The fundamental Van der Waals intermolecular forces which determine the measured film thickness are neatly envisaged by the continuum theory due to Lifshitz. A theoretically derived adsorption isotherm was found to underestimate that measured experimentally by up to 100% on the freshly (air) cleaved substrate. Heat treatment cleaning prior to adsorption led to better agreement. The film thickness measurements were made with a novel design of return path ellipsometer. The incident and reflected laser beams both use the same set of optics and are also transmitted through an identical point in the chamber window. Its advantages, particularly for use in ultra high vacuum environments, are discussed. Investigation of deposited films of 4,4-oxydianline (ODA) and 1,2,3,5 benzenetetracarboxylic anhydride (PMDA) on a polycrystalline silver substrate were made using X-ray photoelectron spectroscopy. Co-deposition followed by heating led to polymerization and the formation of thin (~11AA ) and thermally stable (T<450°C) polyimide films. Both PMDA and ODA films chemisorb on the clean surface under partial fragmentation. Adhesion of the polymer film involves chemical bonding to these fragments. This also demonstrates that sufficiently thin polymerized films can be prepared and applied to fundamental studies of adhesion.

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24

Thornell, Mark E. "Sample fabrication and experimental design for studying interfacial creep at thin film/silicon interfaces". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Mar%5FThornell.pdf.

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25

Moran, Kevin Leslie Murray. "Experimental study of laminar liquid films falling on an inclined plate". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29383.pdf.

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26

Efremenko, Alina Yurievna. "Theoretical and Experimental Spectroscopic studies of Conducting Metal Oxide Thin Films". NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-04212009-144306/.

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In order to expand on the growing field on Surface Plasmon Resonance Spectroscopy (SPRS) the application of SPRS to Conducting Metal Oxides (CMO) was studied. Through experimental and theoretical studies it was concluded that CMOâs are capable of sustaining Surface Plasmon Polaritons (SPP) like those in noble metals. Specifically, we have used indium tin oxide (ITO) as a test case to demonstrate the interplay of experiment and theory. Theoretical studies provided an excellent basis for comparison to experimental data. Furthermore, Near Edge X-Ray Absorption Fine Structure Spectroscopy (NEXAFS) was applied in order to examine the ITO as a substrate for self assembled monolayers (SAMs). It was found that hexadecanethiol and phosphonic acid form ordered monolayers on ITO.

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27

Sait, Hani. "Analytical and experimental study of thin film evaporation in heat pipes /". free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164540.

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28

Koehler, Timothy P. "Experimental and Numerical Investigation of Thermocapillary Effects in Thin Liquid Layers". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19837.

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Thin liquid layers have been proposed for heat extraction and protection of the solid surfaces of divertors in magnetic fusion reactors. A number of conceptual designs for plasma-facing components (PFC) use stationary and flowing liquid layers as a renewable first wall for reactor chambers to remove heat and shield solid surfaces from damaging radiation while maintaining acceptable plasma purity levels. Such liquid-protected PFC have the potential to make fusion more commercially attractive by increasing reactor lifetimes and decreasing failure rates. The results of this research will help identify the parameter ranges for successful operation of such protection schemes. This thesis investigates the thermocapillary behavior of axisymmetric horizontal liquid layers with initial heights from 0.27 to 3.0 mm. A negative radial temperature gradient is imposed at the bottom of the liquid layer. Experimental, numerical and asymptotic analyses were carried out for thin layers where buoyancy forces are negligible. A novel asymptotic solution for this axisymmetric geometry was derived from the previous two-dimensional long-wave analysis by Sen et al. (1982). A numerical simulation using the level contour reconstruction method was used to follow the evolution of the liquid-gas interface above an axisymmetric non-isothermal solid surface. Experimental validation of the theoretical and numerical studies was performed using silicone oils of various viscosities (μ = 0.48 × 10-2 9.6 × 10-2 N s/m2). Two measurement techniques, a needle contact method and laser-confocal displacement method, were employed to obtain height profiles for applied temperature differences up to 65°C. Finally, reflectance shadowgraphy was used to visualize free-surface deformation and classify flow regimes in thick layers, where the assumptions of negligible buoyancy and axisymmetric flow are no longer valid. The results of this investigation will allow designers to determine operating windows for successful implementation of liquid-protected PFC.

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29

Hu, Jin. "Experimental and theoretical investigation of roughness effects on thin laminar fluid films". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27957.pdf.

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30

Gao, Wei. "Computer modelling and experimental characterisation of amorphous semiconductor thin films and devices". Thesis, University of Abertay Dundee, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283970.

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31

Whitney, Allison. "Labyrinth : cinema, myth and nation at Expo 67". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0025/MQ50586.pdf.

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32

Jiao, Anjun. "Modeling of thin film evaporation heat transfer and experimental investigation of miniature heat pipes". Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5613.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2008.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on June 8, 2009) Vita. Includes bibliographical references.

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33

Tabassum, Rana. "Zinc oxide based fiber optic spr sensors using thin films and nanostructures: theoretical and experimental studies". Thesis, IIT Delhi, 2017. http://localhost:8080/iit/handle/2074/7236.

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34

Novak, Vladimir. "Experimental and Numerical Studies of Mist Cooling with Thin Evaporating Subcooled Liquid Films". Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10528.

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An experimental and numerical investigation has been conducted to examine steady, internal, nozzle-generated, gas/liquid mist cooling in vertical channels with ultra-thin, evaporating subcooled liquid films. Interest in this research has been motivated by the need for a highly efficient cooling mechanism in high-power lasers for inertial fusion reactor applications. The aim is to quantify the effects of various operating and design parameters, viz. liquid atomization nozzle design (i.e. spray geometry, droplet size distribution, etc.), heat flux, liquid mass fraction, film thickness, carrier gas velocity, temperature, and humidity, injected liquid temperature, gas/liquid combinations, channel geometry, length, and wettability, and flow direction, on mist cooling effectiveness. A fully-instrumented experimental test facility has been designed and constructed. The facility includes three cylindrical and two rectangular electrically-heated test sections with different unheated entry lengths. Water is used as the mist liquid with air, or helium, as the carrier gas. Three types of mist generating nozzles with significantly different spray characteristics are used. Numerous experiments have been conducted; local heat transfer coefficients along the channels are obtained for a wide range of operating conditions. The data indicate that mist cooling can increase the heat transfer coefficient by more than an order of magnitude compared to forced convection using only the carrier gas. The data obtained in this investigation will allow designers of mist-cooled high heat flux engineering systems to predict their performance over a wide range of design and operating parameters. Comparison has been made between the data and predictions of a modified version of the KIVA-3V code, a mechanistic, three-dimensional computer program for internal, transient, dispersed two-phase flow applications. Good agreement has been obtained for downward mist flow at moderate heat fluxes; at high heat fluxes, the code underpredicts the local heat transfer coefficients and does not predict the onset of film rupture. For upward mist flow, the code underpredicts the local heat transfer coefficients and, contrary to experimental observations, predicts early dryout at the test section exit.

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35

Engman, Jessica. "Experimental study of Cu2ZnSn(Se,S)4 thin films for solar cell applications". Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-155091.

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Cu2ZnSn(Se,S)4 (CZT(Se,S)) has recently been shown to be a promising material to use in thin film solar cells. It has a band gap of between 1eV (CZTSe) and 1.5eV (CZTS). CZT(Se,S) solar cells have reached 10% efficiency. The aim of this project was to find an effective way to selenise metallic Cu, Zn, Sn films in order to produce Cu2ZnSnSe4 (CZTSe) films, without destroying the metallic molybdenum (Mo) back contact. Another aim was to make films containing both Se and S and to study the possibility to achieve a controlled S/Se ratio in the films. Selenisation and sulfurisation reactions were carried out in quartz ampoules and samples were characterized using scanning electron microscopy, x-ray diffraction and energy dispersive microscopy. Since Mo reacts rapidly with Se, experiments with selenisation and sulfurisation of plain Mo films were performed. The time and temperature dependence of the thickness of the reacted layer was studied, and it was found that Se reacts much faster with Mo than S does. Pre-sulfurisation of Mo appeared to hinder Se from reacting with the Mo. The next step was to react precursor films to make CZTSe and CZT(Se,S) absorber layers. For mixed Se and S samples, the result is the same as for plain Mo samples; pre-sulfurisation, or inclusion of S in the precursor layer, can prevent selenisation of the Mo. The S/Se ratio was controlled with reaction time. The best efficiency of 3.2% was obtained for a CZTSe sample while the best CZT(Se,S) sample gave 2.3%.

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36

Yu, He-Jin. "Experimental investigation of the influence of lubricant additives on rheology of elastohydrodynamic films". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21401.pdf.

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37

Domaratskaya, Elena. "Moving image 'before' and 'after' cinema : 1920s Parisian experimental films and video installations". Thesis, Southampton Solent University, 2006. http://ssudl.solent.ac.uk/580/.

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This thesis focuses on the 1920s Parisian avant-garde films and their artistic potential as revealed in the contemporary art of video installations. Starting with an overview of the moving image arts in the early 20th century Paris,the project deals with both the theoretical and the practical aspects of the artistic experiment. Tracing the formation of the cinematic language from contemporary static visual arts, on the one hand, and the verbal art of literature on the other, the first chapter reviews the aesthetical content of the early 20th century Parisian avant-garde (cubism, Dada and surrealism) in general and as applied to 'moving image' in particular. In addition, the artistic and critical context of 'mechanical arts', i.e. photography and cinema is analyzed, involving such issues as the categories of time and space, the visual nature of film and photography and the use of movement and the machine. The nature of video is reflected upon in close parallel with the above argument, being compared with and contrasted to that of film and photography. The second and largest chapter of the thesis is devoted to a detailed textual analysis of the 1920s Parisian experimental films. Within it, parallels are drawn between the films and a number of contemporary video installations to show the early cinematic era heritage in the 'post-cinematic' visual culture. In the last chapter the emergence and nature of new media and video installation art are considered. Multimedia installations are seen as an interactive montage in three dimensions: their 'textuality' is analyzed via the concepts of narrativity versus database, while the screen is treated as a border between the artistic space of the work and the immediate space of the viewer. furthermore, the complex nature of image in multimedia installations, including its materiality and plasticity, is considered. Such issues as the role of medium in experimental art and the importance of self-filming/documentary are reflected upon. A textual analysis of some video installations with references to the 1920s Parisian experimental films analyzed above concludes the study. An attempt to classify the installations is mader, as well as to reveal some of their typical patterns and structures. Some terminology is suggested, along with a wider perspective for future research in the field of video installation art.

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Курбатов, Денис Ігорович, Денис Игоревич Курбатов, Denys Ihorovych Kurbatov, Олексій Володимирович Климов, Алексей Владимирович Климов, Oleksii Volodymyrovych Klymov e D. O. Ladnyi. "Characterizations of Structural Properties of ZnO Thin Films Depending on the Experimental Conditions". Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40814.

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Zinc oxide (ZnO) is one of the most promising materials for the fabrication of optoelectronic devices operating in the blue and ultra-violet (UV) spectral regions, owing to its direct wide band gap (Eg ~3.37 eV) and large exciton binding energy (~60 meV).

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39

Lee, Soon-Gul. "Experimental study of the effects of disorder in weakly disordered superconducting aluminum films /". The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487588939089315.

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40

Myrillas, Konstantinos. "Experimental and numerical investigation of gas jet and liquid film interaction". Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209848.

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The topic of this thesis is the interaction between gas jet flow and a liquid film dragged by a solid substrate. This method, known as jet-wiping, is used in several industrial processes. Hot-dip galvanization of steel strips is an important application, where jet wiping is used to control the thickness of the liquid zinc that is applied on a continuous steel substrate. Unsteady phenomena in the process lead to the creation of waves on the liquid film, which is known as undulation. This unwanted phenomenon deteriorates the quality of the final product.

The aim of the current study is to identify the causes of the undulation and propose possible solutions to tackle the problem. This is achieved through studying the hydrodynamic interaction between the gas jet flow and the liquid film. Experiments on a laboratory test facility and numerical simulations with 3 different Computational Fluid Dynamics (CFD) codes are employed for that purpose.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished

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41

Anderson, Jonathan Kristofer. "Experimental studies of high-speed liquid films on downward-facing surfaces for IFE applications". Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19685.

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42

Abdelall, Fahd Fathi. "Experimental and numerical studies of the Rayleigh-Taylor instability for bounded liquid films with injection through the boundary". Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-04072004-102937/unrestricted/abdelall%5Ffahd%5Ff%5F200405%5Fphd.pdf.

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43

Mkhitaryan, Vahagn. "Nanophotonics of ultrathin films and 2D periodic structures: a combined experimental and theoretical study". Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/460887.

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Photonics is a key enabling technology for many applications ranging from communications to energy and medicine. Its success is largely relying on our capability to appropriately control light in optical devices. To this end, the understanding of light-matter interaction occurring in the devices is a crucial element for finding effective solutions to the challenges posed by the targeted applications. This thesis is devoted to understand light-matter interaction in periodic nanostructures and ultrathin films and create modelling and design tools for functional optical devices, some of them demonstrated experimentally. We start by investigating the needed theoretical methods for describing the interaction of light with surface periodic nanostructures. We carry out a comprehensive study of the transmission, reflection and dispersion properties of 2D periodic arrays and their stacks, including, the study of more complex structures as well, such as, defects in periodic lattices, random arrays of scatterers and multicomponent lattices, and the calculation of the local density of electromagnetic states in the array. We then show how to use the developed theory to design and understand the behaviours of application-specific devices/structures, made of 2D periodic structures and multilayer stack of thin films. A first device demonstrator consists in periodic arrays of nanoholes performated in a gold film covered with Ge2Sb2Te5 (GST), a phase change material layer.We investigate the effect of GST¿s phase transitions on the transmission resonances of these structures. Wavelength shifts as large as 385 nm are demonstrated in configurations with broad resonances. Additionally, excitation of GST with short pulses allows ultrafast tuning of these resonances in the ps regime without producing any phase transition. Finally, tuning of narrower resonances with shifts of 13 nm is also demonstrated. In a second device demonstrator, a perfect absorber, we show how interference effects, occurring in multilayer thin film structures, can be exploited to achieve nearly 100% absorption. Two perfect absorption regimes are identified: the first one broadband and in the visible; the second one resonant and in the near infrared (NIR) region of the wavelengths. We show that the proposed method enables conceptually simple devices that are easy to fabricate. Moreover, we show that GST constitutes an essential layer for a new class of optical absorbers that can be dynamically tuned. In contrast, previous structures required cumbersome fabrication steps and were not dynamically tunable. In a third device demonstrator, a structure with multilayer thin films is used to design and fabricate an anti-reflective, highly transparent electrode, with world-record low sheet electrical resistance and high optical transmission. In summary, the thesis capitalizes on modelling tools for light-matter interaction at the nano-scale, which are adapted to a general class of device structures and allow us to design optical surfaces based on thin films and nano-structuring with unprecedented performance. This is demonstrated through the design and experimental realization of resonant optical filters with very large tunability, perfect absorbers with very high dynamic range and transparent electrodes with record electro-optical performance.
La fotònica és una tecnologia que permetrà implementar noves tecnologies en àrees tan diverses com les comunicacions, l'energia o la medicina. El seu èxit dependrà en gran mesura de la capacitat de controlar la llum en els dispositius òptics. En aquest sentit, entendre com la llum i la matèria interaccionen en aquests dispositius és un dels requisits principals a l'hora de trobar solucions efectives als reptes que ofereixen les diferents àrees d'aplicació de la fotònica. Aquesta tesi té com a objectiu entendre les interaccions entre llum i matèria en estructures periòdiques i capes ultra-primes així com crear eines de disseny i modelat de dispositius òptics, alguns dels quals són també demostrats experimentalment. A la primera part de la tesi s'investiga la teoria necessària per descriure la interacció de la llum en superfícies periòdiques nano-estructurades. Això inclou un estudi detallat de la transmissió, reflexió i dispersió d'estructures periòdiques en 2D o combinacions d¿elles, així com també l'estudi d'estructures més complexes, com ara defectes, estructures aleatòries, i finalment el càlcul de la densitat local d'estats electromagnètics en aquestes estructures. A la segona part de la tesi s'aplica aquesta teoria per dissenyar i entendre el comportament de dispositiu fotònics basats en aquestes estructures 2D per a aplicacions específiques. El primer dispositiu que es demostra consisteix en una estructura periòdica de nano-forats en una capa d'or coberta amb Ge2Sb2Te5 (GST), un material de canvi de fase. S'investiga l'efecte que té un canvi de fase en la capa de GST en les ressonàncies de transmissió d'aquestes estructures i es demostren canvis en la longitud d'ona de ressonància de fins a 385 nm en el cas de ressonàncies amples. A més a més també es demostra com excitant la capa de GST amb polsos ultra-curts aquestes ressonàncies també es poden modificar en una escala de temps de ps sense la necessitat de tenir un canvi de fase. Per últim també es demostren canvis en la longitud d'ona de ressonàncies de fins a 13 nm en dispositius amb ressonàncies estretes. En el segon dispositiu es demostra com els efectes d'interferència que tenen lloc en estructures compostes per vàries capes primes poden ser explotats per tal d'obtenir una absorció de gairebé el 100%. En particular es demostren dos règims d'absorció completa: banda ampla en el visible i absorció ressonant en l'infraroig. Aquest mètode permet fabricar dispositius de manera fàcil. A més a més es demostra com el GST permet crear una nova classe de dispositius amb aborció completa que poden ser sintonitzats dinàmicament, en contrast amb la majoria d'estructures proposades fins al dia d'avui. En la tercera aplicació es dissenya i demostra experimentalment una estructura de vàries capes per a ser usada com a elèctrode transparent amb propietats d'antireflexió, i amb una resistència molt baixa i alta transmissió òptica. En resum, aquesta tesi descriu eines per modelar la interacció entre llum i matèria en l'escala dels nanòmetres per una classe general d'estructures que després són usades per dissenyar superfícies òptiques basades en capes primes i nano-estructuració. En particular això es demostra amb el disseny i realització experimental de filtres òptics ressonants, dispositius amb absorció completa i gran rang dinàmic així com elèctrodes transparents amb unes grans propietats electró-òptiques.

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44

Duse, Marco <1979&gt. "Loving the aliens : outsiders, foreigners and uprooted characters in short and experimental British films". Doctoral thesis, Università Ca' Foscari Venezia, 2013. http://hdl.handle.net/10579/3021.

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Questa tesi analizza sette film girati a Londra negli anni ’50 da registi di provenienza straniera. L’italiana Lorenza Mazzetti, l’ungherese Robert Vas, l’egiziana Nazli Nour e l’inglese (ma dai natali indiani) Lindsay Anderson hanno elaborato, attraverso le loro opere, una visione personale dell’alterità. K (1953) e Together, di Lorenza Mazzetti, sono due variazioni sul tema dell’outsider, realizzate con stile sperimentale e con toni esistenzialisti. Alone With the Monsters (1958), di Nazli Nour, vede un’anziana emarginata venire giudicata e derisa da gente mostruosa – che vive, però, nella sua testa. Refuge England (1959), di Robert Vas, ricostruisce l’arrivo di un rifugiato a Londra, il suo primo impatto con la città, la ricerca di un posto in cui stare, e i tentativi di decifrare la lingua e la società inglesi. Di Lindsay Anderson, O Dreamland (1953) e Every Day Except Christmas (1957) definiscono l’impianto estetico e politico, che verrà poi sviluppato in The White Bus (1967), un racconto sperimentale, surreale e Brechtiano in cui una giovane ragazza si ritrova aliena in un contesto urbano al quale non appartiene.
This thesis studies seven films shot in London in the 1950s by foreign-born directors. The Italian Lorenza Mazzetti, the Hungarian Robert Vas, the Egyptian Nazli Nour and the English (but Indian-born) Lindsay Anderson developed, through these works, their personal view on ‘otherness’. Lorenza Mazzetti’s K (1953) and Together (1956) are variations on the character of the outsider, directed with an experimental style and influenced by existentialism. Alone With the Monsters (1958), by Nazli Nour, sees an outcast being judged and laughed at by monstrous people – that are all in her head. Robert Vas’ Refuge England (1959), narrates a refugee’s first impact with the city of London, his search for a place to stay and his attempts to decipher the English language and society. Lindsay Anderson’s O Dreamland (1953) and Every Day Except Christmas (1957) define Anderson’s aesthetic and political stance, which will be fully developed in The White Bus (1967), en experimental, surreal and Brechtian tale in which a young Girl is alienated in an urban context to which she does not belong.

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45

Mahajan, Manoj Deepak Jackson Robert Lloyd. "Experimental and analytical investigation of a dymanic gas squeeze film bearing including asperity contact effects". Auburn, Ala., 2006. http://repo.lib.auburn.edu/Send%2012-15-07/MAHAJAN_MANOJ_5.pdf.

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46

Pauken, Michael T. "An experimental investigation of the spreading, durability and maintainability of monolayer films for evaporation suppression from stationary watr pools". Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/33624.

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47

Liu, Zhiqiang. "Modelling and experimental studies of contact and friction of metallic rough surfaces in initial sliding". Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/542.

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48

Shaoguang, Chen. "Experimental Investigation on Mechanical Properties of Nanospring Thin Films Fabricated by Glancing Angle Deposition Technique". 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225556.

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49

Karimi, Gholamreza. "An experimental study of falling liquid films in countercurrent annular flow in a vertical tube". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0008/NQ35201.pdf.

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50

Ashrafi, Behnam. "Theoretical and experimental investigations of the elastic properties of carbon nanotube-reinforced polymer thin films". Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21910.

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Nanocomposites are a promising new class of materials for the mechanical components of microstructures such as microactuators and microresonators. This work presents a combination of theoretical and experimental investigations of the utility of carbon nanotube-reinforced composites for designing microstructures. In the theoretical part of this research, the effects of nanotube aspect ratio, dispersion, alignment, and volume fraction on the elastic modulus and longitudinal wave velocity are analyzed by recourse to the Mori-Tanaka theory. The calculated bounds on Young's modulus and wave velocity capture the trend of the experimental results reported in the literature. Polymer-matrix nanocomposites reinforced with aligned, dispersed single-walled carbon nanotubes are identified as excellent candidates for small structures with properties rivaling those of metallic- and ceramic-structures used in the current generation of microelectromechanical systems (MEMS). The experimental part of this research focuses on the manufacture and characterization of carbon nanotube-reinforced polymer thin films. A novel nanoindenter-based bending test is developed for characterizing the elastic properties of nanocomposite thin films. This technique is first numerically verified using finite element methods. Polymer thin films with known mechanical properties are then utilized to validate the technique experimentally. Next, epoxy-matrix and vinyl ester epoxy-matrix nanocomposite films (ranging from 50 to 70 μm in thickness) reinforced with low concentrations (<1% by weight) of single-walled carbon nanotubes are successfully manufactured and characterized. Finally, using carbon nanotube sheets (buckypaper), polymer-matrix nanocomposite films with high volume fractions of carbon nanotubes (30-40%) are manufactured by using two different techniques: vacuum infiltration and hot press. This relatively high content of carbon nanotubes results in a three- to four-fold increase in the elasti
Les nano-composites sont une nouvelle classe de matériaux prometteurs pour les composants mécaniques de microstructures telles que les micro-actuateurs et micro-résonateurs. Ce travail présente une combinaison d'études théoriques et expérimentales sur l'utilité de composites renforcés par des nanotubes de carbone pour la conception de microstructures. Dans la partie théorique de cette recherche, les effets du rapport de forme, de la dispersion, de l'alignement et de la fraction volumique des nanotubes sur le module élastique et la vitesse d'onde longitudinale ont été analysés en utilisant la théorie de Mori-Tanaka. Les limites calculées du module d'Young et de la vitesse d'onde capturent la tendance des résultats expérimentaux rapportés dans la littérature. Les nano-composites à matrice polymère renforcée avec des SWNT alignés et dispersés ont été identifiés comme d'excellents candidats pour de petites structures dont les propriétés rivalisent avec les structures métalliques ou céramiques utilisées dans la présente génération de systèmes micro-électro-mécaniques (MEMS). La partie expérimentale de cette recherche focalise sur la fabrication et la caractérisation de films polymères minces renforcés avec des nanotubes de carbone. Du aux difficultés rencontrées avec les techniques traditionnelles pour la caractérisation du module élastique de films polymère minces, une nouvelle technique, un test en flexion par nano-indentation, a été développée avec succès. La technique a été d'abord vérifiée numériquement par la 00 méthode d'éléments finis. Puis des films polymère minces avec des propriétés connues ont été utilisés pour vérifier cette technique expérimentalement. Par la suite, des films minces (épaisseur variant de 50 à 70 μm) de nano-composite à matrice époxy et vinyle-ester renforcées avec de faibles concentrations de SWNT (1% par masse) ont été fabriqués et caractérisés avec succès

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