Academic literature on the topic 'Filmat material'
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Journal articles on the topic "Filmat material"
Kotlan, Václav, Roman Hamar, Lenka Šroubová, and Ivo Doležel. "Hybrid realization of fillet weld." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 4 (July 2, 2018): 1315–27. http://dx.doi.org/10.1108/compel-08-2017-0357.
Full textTorii, Tashiyuki, and Akira Matsuba. "OS11W0266 Fatigue fracture properties in surface film-bonded materials using pure copper and commercial grade iron films." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS11W0266. http://dx.doi.org/10.1299/jsmeatem.2003.2._os11w0266.
Full textButukuri, R. R., V. P. Bheemreddy, K. Chandrashekhara, T. R. Berkel, and K. Rupel. "Evaluation of skin-core adhesion bond of out-of-autoclave honeycomb sandwich structures." Journal of Reinforced Plastics and Composites 31, no. 5 (March 2012): 331–39. http://dx.doi.org/10.1177/0731684412437267.
Full textSaputra, Eka. "Effect of washing time and storage of raw Material on Surimi and Kamaboko of Tilapia (Oreochromis sp.)." Journal of Marine and Coastal Science 7, no. 3 (July 14, 2020): 89. http://dx.doi.org/10.20473/jmcs.v7i3.20733.
Full textGarcía, C., I. Pascual, and A. Fimia. "Obtención de una placa fotosensible como material de registro holográfico." Boletín de la Sociedad Española de Cerámica y Vidrio 39, no. 4 (August 30, 2000): 435–39. http://dx.doi.org/10.3989/cyv.2000.v39.i4.793.
Full textKang, Renke, Jinting Liu, Zhigang Dong, Feifei Zheng, Yan Bao, and Jiadong Duan. "An Improved Cutting Force Model for Ultrasonically Assisted Grinding of Hard and Brittle Materials." Applied Sciences 11, no. 9 (April 25, 2021): 3888. http://dx.doi.org/10.3390/app11093888.
Full textSholahuddin, Muhammad Athoillah. "Honey application as a halal replacement material for fillet fish product in transportation." Journal of Halal Product and Research 3, no. 1 (June 3, 2020): 9. http://dx.doi.org/10.20473/jhpr.vol.3-issue.1.9-19.
Full textKıymaz, Tufan. "Baker’s Theory of Material Constitution and Thinking Things into Existence." Filozofia Nauki 26, no. 4 (December 31, 2018): 49–56. http://dx.doi.org/10.14394/filnau.2018.0023.
Full textFANG, TE-HUA, WIN-JIN CHANG, CHAO-MING LIN, and CHUN-CHIN CHANG. "CYCLIC NANOINDENTATION OF SEMICONDUCTOR AND METAL THIN FILMS." International Journal of Modern Physics B 23, no. 30 (December 10, 2009): 5639–47. http://dx.doi.org/10.1142/s0217979209053643.
Full textBai, Shu Zhan, Yu Ping Hu, Hai Long Zhang, Sheng Wei Zhou, Ying Jun Jia, and Guo Xiang Li. "Failure Analysis of Commercial Vehicle Crankshaft: A Case Study." Applied Mechanics and Materials 192 (July 2012): 78–82. http://dx.doi.org/10.4028/www.scientific.net/amm.192.78.
Full textDissertations / Theses on the topic "Filmat material"
Ohlsson, Amanda, and Alexander Stark. "“En tillgång att vi är många som kan titta på filmerna eftersom vi är bra på olika saker” : En kvalitativ studie om hur filmat material används i undervisning och för bedömning i idrott och hälsa." Thesis, Linnéuniversitetet, Institutionen för idrottsvetenskap (ID), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-63742.
Full textSilva, Alysson Martins Almeida. "Crescimento e estrutura de monocamadas de Co sobre Cu90Au10(100)." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2008. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=101.
Full textO estudo das correlações entre as propriedades estruturais e magnéticas de filmes finos e ultrafinos é hoje assunto de grande interesse tanto científico como tecnológico, sendo que, dada a disponibilidade de materiais e a importância das aplicações atuais e potenciais, filmes magnéticos compostos por metais e ligas de metais de transição 3d estão entre os materiais mais investigados. O Co é um metal de transição 3d, ferromagnético, e que, em volume, apresenta estrutura hexagonal compacta (hc). Entretanto, tanto esta fase como as fases cúbica de face centrada (cfc) e cúbica de corpo centrado (ccc) podem ser estabilizadas à temperatura ambiente na forma de filmes ultrafinos, ou ainda em forma de estruturas multicamadas, e as propriedades magnéticas dos mesmos apresentam uma complexa correlação com a estrutura cristalina. Existe um grande numero de trabalhos a respeito de Co crescido sobre superfícies de Cu (cfc, parâmetro de rede a = 3,615 Å) e outros monocristais, mas nada há na literatura sobre monocamadas de Co depositadas sobre Cu90Au10, uma liga cfc com parâmetro de rede (3,66 Å) expandido de 1,0% em relação ao Cu. Investigamos aqui o crescimento, em condições de epitaxia de feixe molecular (MBE), e a estrutura de filmes de Co depositados a temperatura ambiente, com espessuras entre uma e cinco monocamadas atômicas (ML) depositadas sobre a superfície (100) da liga Cu90Au10. A composição química e a pureza da superfície do monocristal e dos filmes foram determinadas por espectroscopia de elétrons excitados por raios X (XPS). A cristalinidade da superfície do substrato, bem como a forma de crescimento e a estrutura dos filmes foram determinados por difração de elétrons de baixa e alta energia, LEED e RHEED. A morfologia da superfície do cristal de Cu90Au10(100) e das primeiras monocamadas do filme de cobalto foram determinadas através de medidas de microscopia de varredura por tunelamento (STM). Medidas de magnetometria por efeito Kerr magneto- óptico foram utilizadas para se estabelecer, em caráter preliminar, uma correlação entre a estrutura e o magnetismo dos filmes de Co sobre Cu90Au10(100) Nossos resultados indicam o crescimento de Co com estrutura tetragonal de face centrada (tfc), e uma evolução, com o aumento da espessura de cobalto, de formação de ilhas para crescimento camada a camada. Além disso, nota-se para os filmes de Co uma rápida contração do parâmetro de rede no plano, atingindo aproximadamente 2,5% para ~ 4,0 ML, quando comparado ao substrato de Cu90Au10 (100). Medidas de magnetometria por Efeito Kerr Magneto-ótico indicam magnetização no plano do filme. Este trabalho eminentemente experimental representou um amplo aprendizado no uso e exploração das potencialidades de técnicas múltiplas (LEED, RHEED, XPS, AES, STM e MOKE) para a adequada caracterização e investigação das propriedades estruturais e magnéticas de superfícies e nanoestruturas heteroepitaxiais preparadas em UHV, em condições de epitaxia de feixe molecular (MBE), bem como o primeiro estudo do crescimento de monocamadas de Co depositadas sobre Cu90Au10(100).
The investigation of correlations between structural and magnetic properties of thin and ultrathin films is of great scientific and technological interest presently. Due to importance of their actual and potential applications, films of 3d metals and their alloys are among the most investigated materials. Co is a ferromagnetic 3d metal that in bulk has a hexagonal compact structure (hcp). For Co films or multilayers, the hcp as well as the face-centered (fcc) and bodycentered cubic (bcc) phases can be stabilized at room temperature, depending on the used substrate. It is known that the preparation method can affect decisively the structural and magnetic properties of Co monolayers. There is a big amount of work on Co films grown on different Cu surfaces (fcc; lattice parameter a = 3.615 Å) and other substrates but, to the best of our knowledgement, there is no studies on Co monolayers deposited on Cu90Au10(100), a fcc alloy with lattice parameter of about 3.66 Å. In this work we investigate the epitaxial grow and the structure of Co films with thickness up to 5 atomic monolayers (ML) deposited on Cu90Au10(100). The goal of the study was to investigate the modifications in the magnetic properties of the Co films provided by small distortions in the lattice, since Cu90Au10 presents cfc structure with a lattice parameter ~1% larger than the one of the pure Cu. The sample preparation and the majority of the experimental analysis has been done in ultra high vacuum under molecular beam epitaxy conditions. The studies were conducted in situ, in UHV, by using x-ray photoelectron spectroscopy (XPS), high and low energy electron diffraction (RHEED and LEED), and scanning tunneling microscopy (STM). Preliminary magnetic measurements on the correlation structure - magnetism were conducted by magneto-optical Kerr effect (MOKE). Our results indicate the growth of a tetragonal distorted face centered (fct) Co lattice and an initial formation of islands followed by a layer-by-layer grow starting from 2 ML Co. The lateral lattice parameter shows a fast contraction with increasing thickness when compared to the CuAu substrate, reaching ~ 2.5% at 4 ML Co. Surface magnetometry by Magneto-optical Kerr effect indicated in-plane magnetization of the Co films. This experimental work represented a broad and extensive learning process on preparation and characterization of heteroepitaxial nanostructures by multiple techniques (LEED, RHEED, XPS, AES, STM, and MOKE) under MBE conditions (UHV) and the first investigation of Co monolayers on Cu90Au10(100). SUMÁRIO
Gonçalves, Rogéria Rocha [UNESP]. "Preparação e caracterização de filmes óxidos contendo componentes opticamente ativos." Universidade Estadual Paulista (UNESP), 2001. http://hdl.handle.net/11449/105805.
Full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
A preparação dos sistemas dopados com ions lantanídeos (Eu e Er): SnO2, HfO2, HfO2 disperso em matriz híbrida, SiO2-HfO2, Ta2O5, Ta2O5 disperso em matriz híbrida, através da metodologia sol gel, foi objetivo desta tese . São apresentados resultados para suspensões coloidais, sólidos (géis, xerogéis e pós) e filmes preparados por spin coating. Suspensões coloidais de SnO2 dopados com até 2% em mol de íons Eu e Er foram preparadas a partir da redispersão, em meio aquoso básico, de nanoparticulas com a superfície modificada. Diâmetro médio de 4 e 6 nm foram observados para os compostos dopados e puros respectivamente, através de espalhamento de luz e microscopia eletrônica de transmissão. Os compostos apresentam nanocristalitos, estrutura cassiterita. O íon Eu3+ ocupa dois diferentes sítios de simetria na matriz SnO2. Um referente ao ion Eu3+ na rede cristalina de SnO2, substituindo átomos de Sn4+, sítio de alta simetria (D2h, C2h) apresentando um tempo de vida de emissão do 5D0 de 6ms; e o segundo referente ao Eu3+ adsorvido na superfície da partícula apresentando um tempo de vida de emissão do 5D0 de 0,3 ms. A proteção da superfície da partícula com moléculas orgânicas, beta dicetonas, originou suspensões coloidais altamente luminescentes em meio aquoso, formando um complexo com o ion Eu3+ presente na superfície da partícula, apresentando tempo de vida de 0,6 ms. Filmes finos homogêneos e transparentes foram depositados a partir das suspensões coloidais usando spin coating. Monocamadas de até 200 nm foram depositadas, observando-se o aumento linear da espessura com a concentração de material e número de depósitos. Filmes tratados a 500oC apresentam nanocristalitos de 10nm, estrutura cassiterita. Os filmes apresentam alto índice de refração e uma porosidade de 26% foi calculada. Guias...
The preparation of the systems doped with lanthanide ions (Eu3+ and Er3+): SnO2, HfO2, organic-inorganic hybrid system containing HfO2, SiO2- HfO2, Ta2O5 and organic-inorganic hybrid system containing Ta2O5, by using the sol gel process, have been the aim of this work. The Results of the colloidal suspension, solids (gel, xerogel and powder) and films are presented. Luminescent SnO2 colloidal suspension, with Eu3+ and Er3+ up to 2 mol%, have been prepared by redispersion of the powder (nanoparticles with modified surface) in a basic aqueous solution. Average diameter of 4 and 6nm were observed to the compounds doped and pure respectivelly, by dynamic light scattering and high resolution transmission electron microscopy. Cassiterite structure is attributed to the crystalline phase of the nanoparticles. Eu3+ ions occupied two different symmetry site. One of them corresponds to the ion in the cassiterite structure, substituting the Sn4+ ions , high symmetry site (D2h or C2h), with a 5D0 lifetime of 6ms; and the second one corresponds to the adsorbed ions on the surface, with a 5D0 lifetime of 0,3 ms. The presence of Eu3+ ions at the surface of the particles hinder their growing and also has allowed the preparation of new materials consisting of water redispersable powders coated with Eu3+-beta diketonate complex. Enhanced UV excited photoluminescence was observed in water. Homogeneous and transparent films were deposited by using the colloidal suspension by spin coating technique. Monolayers up to 200nm were prepared and a linear increase of the thickness value were observed with the concentration of the material and also the number of the layers. Films heat treated at 5000C show nanocrystals of 10nm, cassiterite structure. High ...(Complete abstract, click electronic access below)
Gonçalves, Rogéria Rocha. "Preparação e caracterização de filmes óxidos contendo componentes opticamente ativos /." Araraquara : [s.n.], 2001. http://hdl.handle.net/11449/105805.
Full textBanca: Norberto Aranha
Banca: Leandro Tessler
Banca: Luis A. Carlos
Banca: Verónica Zéa Bermudez
Resumo: A preparação dos sistemas dopados com ions lantanídeos (Eu e Er): SnO2, HfO2, HfO2 disperso em matriz híbrida, SiO2-HfO2, Ta2O5, Ta2O5 disperso em matriz híbrida, através da metodologia sol gel, foi objetivo desta tese . São apresentados resultados para suspensões coloidais, sólidos (géis, xerogéis e pós) e filmes preparados por spin coating. Suspensões coloidais de SnO2 dopados com até 2% em mol de íons Eu e Er foram preparadas a partir da redispersão, em meio aquoso básico, de nanoparticulas com a superfície modificada. Diâmetro médio de 4 e 6 nm foram observados para os compostos dopados e puros respectivamente, através de espalhamento de luz e microscopia eletrônica de transmissão. Os compostos apresentam nanocristalitos, estrutura cassiterita. O íon Eu3+ ocupa dois diferentes sítios de simetria na matriz SnO2. Um referente ao ion Eu3+ na rede cristalina de SnO2, substituindo átomos de Sn4+, sítio de alta simetria (D2h, C2h) apresentando um tempo de vida de emissão do 5D0 de 6ms; e o segundo referente ao Eu3+ adsorvido na superfície da partícula apresentando um tempo de vida de emissão do 5D0 de 0,3 ms. A proteção da superfície da partícula com moléculas orgânicas, beta dicetonas, originou suspensões coloidais altamente luminescentes em meio aquoso, formando um complexo com o ion Eu3+ presente na superfície da partícula, apresentando tempo de vida de 0,6 ms. Filmes finos homogêneos e transparentes foram depositados a partir das suspensões coloidais usando spin coating. Monocamadas de até 200 nm foram depositadas, observando-se o aumento linear da espessura com a concentração de material e número de depósitos. Filmes tratados a 500oC apresentam nanocristalitos de 10nm, estrutura cassiterita. Os filmes apresentam alto índice de refração e uma porosidade de 26% foi calculada. Guias ...(Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The preparation of the systems doped with lanthanide ions (Eu3+ and Er3+): SnO2, HfO2, organic-inorganic hybrid system containing HfO2, SiO2- HfO2, Ta2O5 and organic-inorganic hybrid system containing Ta2O5, by using the sol gel process, have been the aim of this work. The Results of the colloidal suspension, solids (gel, xerogel and powder) and films are presented. Luminescent SnO2 colloidal suspension, with Eu3+ and Er3+ up to 2 mol%, have been prepared by redispersion of the powder (nanoparticles with modified surface) in a basic aqueous solution. Average diameter of 4 and 6nm were observed to the compounds doped and pure respectivelly, by dynamic light scattering and high resolution transmission electron microscopy. Cassiterite structure is attributed to the crystalline phase of the nanoparticles. Eu3+ ions occupied two different symmetry site. One of them corresponds to the ion in the cassiterite structure, substituting the Sn4+ ions , high symmetry site (D2h or C2h), with a 5D0 lifetime of 6ms; and the second one corresponds to the adsorbed ions on the surface, with a 5D0 lifetime of 0,3 ms. The presence of Eu3+ ions at the surface of the particles hinder their growing and also has allowed the preparation of new materials consisting of water redispersable powders coated with Eu3+-beta diketonate complex. Enhanced UV excited photoluminescence was observed in water. Homogeneous and transparent films were deposited by using the colloidal suspension by spin coating technique. Monolayers up to 200nm were prepared and a linear increase of the thickness value were observed with the concentration of the material and also the number of the layers. Films heat treated at 5000C show nanocrystals of 10nm, cassiterite structure. High ...(Complete abstract, click electronic access below)
Doutor
Pereira, Saulo Milani. "Preparação e caracterização de nanoestruturas magnéticas baseadas em FeCo/IrMn depositados por pulverização catódica." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2011. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=187.
Full textSpintronic devices based in the transport of spin polarized current, spins torque and other related phenomena represent big promises in the scenery of the technological miniaturization of current electronic devices. Magnetic materials of great technological relevance for different areas deal with, despite some exceptions, films and multilayered structures with high complexity. Advances on these fields require the control of those structures in atomic scale, in order to be able to tailor their physical properties. The purpose of this work is the preparation of multilayered structures by sputtering, as well the study of magnetic phenomena involved in this structures. The aim is to produce a spin valve. This is a multilayer structure composed of two ferromagnetic layers, separated by a non magnetic spacer. The magnetisation of one of the ferromagnetic layers is free to rotate under the effect of small external fields, whilst the magnetisation of the other ferromagnetic layer remains fixed by means exchange coupling to a antiferromagnetic layer. The structure is tailored to allow the small applied magnetic fields to switch the magnetisation of the ferromagnetic layers from antiparallel state to a parallel state resulting in the variation of the electrical resistivity of the structure (GMR effect). Optimization of deposition conditions was required to obtain structures with exchange bias coupling, and antiferromagnetic coupling through a non magnetic spacer. The correlation between the deposition conditions and the magnetic properties of the films was studied. The work presented in this dissertation has contributed to the characterisation of both magnetic thin films, which can be used on the production of magnetic sensors, and the new sputtering system assembled in the Applied Physics Laboratory of CDTN.
Oliveira, Daniela Coelho de [UNESP]. "Filmes finos híbridos orgânicos-inorgânicos para fotônica." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/105801.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
O material estudado neste trabalho é um híbrido orgânico-inorgânico denominado di-ureasil formado por uma cadeia tipo poliéter unida em ambas extremidades a um grupo siloxano por pontes de uréia. As curvas de SAXS mostram um pico de interferência característico, atribuído a uma correlação espacial existente entre as partículas de siloxanos. Um complexo formado entre zircônio e ácido metacrílico foi adicionado ao material base e o aumento do teor deste complexo leva a um alargamento das bandas e um deslocamento de q para valores maiores. O alargamento é devido ao aumento na dispersão das distâncias interpartículas e o deslocamento pode ser devido a interação do zicônio com a região polimérica levando a uma diminuição das distâncias entre as partículas de siloxanos. As mesmas informações podem ser obtidas a partir das curvas de difração de raios X. A desconvolução gaussiana das curvas experimentais indica a formação de nanodomínios de óxido de zircônio. As curvas de transmissão na região do infravermelho mostram a interação dessas espécies de zircônio com a região polimérica da matriz híbrida. Entretanto, a competição pela água do meio reacional entre espécies de Zr e Si levam a uma diminuiçào no grau de condensação das espécies de siloxano evidenciada pelo aparecimento de bandas relativas a silanóis residuais apenas para amostras com alta concentração de zircônio. Este fato é confirmado pelas análises de RMN de 29Si. As propriedades ópticas dos di-ureasis também foram estudadas. Uma banda larga de emissão que cobre a parte do visível do espectro eletromagnético é devida à combinação de duas componentes atribuídas à processos de recombinação doador-aceptor, que ocorre entre grupos NH das ligações uréia e nos centros de siloxanos.
The base material studied is the organic-inorganic host termed di-ureasil formed by poly(ether)-based chains grafted at both ends to a siloxone backbone through urea cross linkages. SAXS curves display a characteristic interference peak attributed to the spatial correlation between siloxane nanoparticles. A methacrylate modified zirconium alcoxide (Zr- AMA) was added to this base host and the increasing addition leads to broadening and q shift to higher values. Broadening is due to increasing dispersion in the interparticle distances and the shift could be due to zirconium interaction with the polymeric part leading decreasing distances between siloxane particles. Essentially the same information is obtained from XRD curves. Gaussian deconvolution of the experimental curves indicate the formation of zirconium oxide based nanodomains. FT-IR spectra analysis have shown the interaction of the zirconium based species with the polymeric part of the hybrid host. Moreover competition for water between Si and Zr species lead to decrease on the condensation degree of siloxane species as evidenced by the appearence of characteristic silanol bands only for higher Zr content. This fact is confirmed by 29Si NMR. The optical properties of the di-ureasils were also studied. A broad emission band covering the visible part of the electromagnetic spectrum is attributed to the convolution of two components assigned to radiative recombination processes typical of donor-acceptor pairs occurring in the NH groups of the urea cross-links and in the siliceous nanodomains. With the addition of Zr-AMA broadening is observed. Luminescence spectroscopy shows that the addition of highly emitting Eu3+ â -diketonate complex [Eu(tta)3(H2O)2] (where tta stands for thenoiltrifluoribetadiketonate) to the di-ureasil host has lead to interesting features.
Ferreira, Fabio Furlan. "Eletrocromismo em filmes finos compósitos." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-05072012-162751/.
Full textIn this work we initially calculated the optical properties of cermet films of Me-NiO and Me-CoO, being the metals Me = Au, Ag, Cu, Ni, Pd and Pt, by means of the Maxwell Garnett effective medium theory. This theoretical study allowed evaluating the viability to obtain, experimentally, a colored material in the visible spectrum region, with selective absorption in a narrow range of wavelengths. The results showed that the ideal candidate for such goal is the Au cermet. Looking at this result, the growth of Au-NiO and Au-CoO thin films was initiated using different experimental strategies: (i) deposition by reactive DC magnetron sputtering, (ii) deposition of the NiO, film by reactive DC magnetron sputtering and Au by the sol-gel and dip coating methods and (iii) deposition of both films, NiOxHy and Au, by sol-gel and dip coating. The films grown by sputtering showed a small selectivity (-5-10%), due to the atomistic character of this type of technique. It leads to the formation of small clusters of Au (smaller than -3 nrn), instead of aggregates with sizes of the order of some tenths of nanometers, easily obtained by the sol-gel method. Better selectivity, around 15%, is obtained in films deposited as multilayers. Post thermal annealing of the cermet films grown by sputtering induces the agglomeration of Au, but destroys the electrochromic properties. In the case of Au films grown by sol-gel, the spectral selectivity increases, due to the presence of Au, going from 15% to 20% in films deposited on the oxide matrix, deposited by sputtering and sol-gel, respectively. Under electrochemical processes, the NiOxHy films grown by sol-gel and dip coating presented the highest transmission variation (70%), due to larger porosity of these films.
Blanco, Ricardo Rodrigues. "Filmes de alumina depositados por metodologia híbrida de plasma /." Bauru, 2019. http://hdl.handle.net/11449/181426.
Full textBanca: Luciana Sgarbi Rossino
Banca: José Humberto da Silva
Resumo: O composto acetilacetonato de alumínio, AAA, é normalmente utilizado para sintetizar filmes de alumina pelo método de deposição química de vapor (Chemical Vapor Deposition, CVD). Estudos recentes têm demonstrado também a possibilidade de se criar filmes à base de alumínio a partir do sputtering reativo deste composto em plasmas de radiofrequência de misturas de argônio e oxigênio. O objetivo do presente trabalho foi avaliar a possibilidade de utilizar tensão contínua pulsada, DC, diferentemente dos relatos da literatura, para depositar filmes à base de Al pelo sputtering reativo do AAA. Esta proposta é justificada pelo fato da excitação com tensão contínua pulsada na configuração elétrica aqui empregada, permitir o simultâneo aquecimento do composto precursor e das amostras, ao mesmo tempo em que proporciona o estabelecimento do plasma. Além de favorecer a criação de estrutura estequiométrica, pela remoção de orgânicos, o aquecimento pode possibilitar a precipitação de fases cristalinas da alumina. Para realização deste trabalho foi utilizado um reator capacitivamente acoplado em que o pó do AAA foi acondicionado no centro do eletrodo inferior e os substratos acomodados ao seu redor. O plasma foi estabelecido pela aplicação de sinal DC pulsado (-300 à -400 V, 20 kHz, pulsos 48/50 µs) no único eletrodo (porta amostras) enquanto toda a carcaça e tampa superior permaneceram aterrados. Foram investigadas duas diferentes condições. A primeira avaliou-se o efeito da potência do sin... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The aluminum acetylacetonate compound, AAA, is usually used to synthesize alumina films by the chemical vapor deposition method (CVD). Recent studies have also demonstrated the possibility of creating aluminum-based films from the reactive sputtering of this compound in radiofrequency plasmas of argon and oxygen mixtures. The purpose of the present study was to evaluate the possibility of using pulsed DC voltage, another the literature reports, to deposit Al based films by AAA reactive sputtering. This proposal is justified by the fact that pulsed continuous voltage excitation in the electrical configuration employed here allows the simultaneous heating of the precursor compound and samples, while providing the establishment of the plasma. In addition to favoring the creation of a stoichiometric structure, by the removal of organic, the heating may allow the precipitation of crystalline phases of the alumina. To perform this work, a capacitively coupled reactor was used in which the AAA powder was conditioned at the center of the lower electrode and the substrates accommodated around it. Plasma was established by applying pulsed DC signal (-300 to -400 V, 20 kHz, pulses 48/50 μs) on the single electrode (sample holder) while the entire housing and top cover remained grounded. Two different conditions were investigated. The first one evaluated the effect of plasma excitation signal power, P, varied from 200 to 500 W and the effect of time, t, on films produced with plasma (200... (Complete abstract click electronic access below)
Mestre
Antunes, Vinícius Gabriel 1984. "Deposição e caracterização físico-química de filmes finos nanoestruturados (nanocompósitos) contendo Ti, C, N e O, Obtidos a partir de um precursor líquido (Ti(OC2H5)4)." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276978.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin
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Resumo: Os tratamentos de superfície a plasma são amplamente usados em diversas áreas de tecnologia, tais como: indústria metalmecânica, microeletrônica, plástico e medicina, para o crescimento de filmes finos, camadas protetoras em instrumentos e ferramentas de corte, funcionalização de superfícies plásticas, tecidos sintéticos, esterilização de instrumentos cirúrgicos e plasma reativo em semicondutores. Há alguns anos, uma nova família de filmes duros e protetores com baixo atrito compostos por nanoestrururas, tem sido intensamente pesquisada por apresentar propriedades particularmente interessantes, do ponto de vista da físico-química básica, como possíveis aplicações tecnológicas em que a demanda por desgaste, altas temperatura, e resistência mecânica são necessárias. A deposição de filmes finos, constituídos por nanocompósitos, e a compreensão de propriedades (mecânicas, elétricas, ópticas) desses novos materiais, gera um leque de possíveis aplicações tecnológicas. A partir de tais premissas, focalizamos o objetivo do trabalho em estudar a obtenção e caracterização das propriedades físico-químicas de filmes finos nanoestruturados (nanocompósitos), que contêm compostos de Ti, C, N, e O, utilizando a técnica de Deposição Química pela Decomposição do precursor líquido tetraetóxido de titânio (Ti(OC2H5)4) (PECVD, na sigla em inglês). Ressalta-se que o interesse em obter esses materiais, a partir do reagente em questão, reside no fato de que ele poderia substituir o uso de outros precursores de difícil manuseio, tais como o tetracloreto de titânio (TiCl4), o qual é normalmente utilizado em numerosas aplicações de deposições de filmes compósitos, mediante a técnica de PECVD, e cujo subproduto da reação gera reagentes altamente corrosivos. Em resumo, este trabalho contempla a caracterização da composição química, micro e nano estrutura de compósitos que contêm os compostos mencionados, em função das variáveis mais importantes de deposição. O presente estudo foi bem sucedido em obter nanocompósito e correlacionar a dependência das ligações químicas do material com os parâmetros mais importantes de deposição
Abstract: Plasma surface treatments are widely used in several technological areas (e.g., metallurgic industry, microelectronic, plastic industry, medicine) in order to obtain hard coatings on cutting tools and instruments, funtionalization of plastics and synthetic materials used in the textile industry, sterilization of chirurgic instruments, etching by reactive plasma in the semiconductor industry, etc. Recently, a new family of coatings deposited by plasma assisted techniques owing interesting physical chemical properties such as super-hardness, low friction and wear resistant, temperature and corrosion resistant, known as nano-composites, have been intensely studied.The objectives of this work is developing a nano composite containing Ti, C, N e O and understand as far as possible its physical and chemical properties. The material is obtained by plasma assisted enhanced chemical deposition (PECVD) using Titanium(IV) ethoxide ( (Ti(OC2H5)4) and N as precursors of the reaction. The importance of the attempt to use the cited precursor resides in the fact that it is a friendly liquid without corrosive o major toxic effects, as the normal precursors used in the actual industrial process (e.g., titanium tetrachloride, TiCl4). Summarizing, this work is focusing the research in the deposition and study of the physical and chemical properties of thin films nano composites obtained from Titanium(IV) ethoxide precursor. The study shows that the deposition procedure allows obtaining a material containing nanoscopics size crystallites of the compounds cited above. Finally, the relation of the material properties with the more important deposition parameters is discussed and presented
Mestrado
Física
Mestre em Física
Oliveira, Daniela Coelho de. "Filmes finos híbridos orgânicos-inorgânicos para fotônica /." Araraquara : [s.n.], 2006. http://hdl.handle.net/11449/105801.
Full textAbstract: The base material studied is the organic-inorganic host termed "di-ureasil" formed by poly(ether)-based chains grafted at both ends to a siloxone backbone through urea cross linkages. SAXS curves display a characteristic interference peak attributed to the spatial correlation between siloxane nanoparticles. A methacrylate modified zirconium alcoxide (Zr- AMA) was added to this base host and the increasing addition leads to broadening and q shift to higher values. Broadening is due to increasing dispersion in the interparticle distances and the shift could be due to zirconium interaction with the polymeric part leading decreasing distances between siloxane particles. Essentially the same information is obtained from XRD curves. Gaussian deconvolution of the experimental curves indicate the formation of zirconium oxide based nanodomains. FT-IR spectra analysis have shown the interaction of the zirconium based species with the polymeric part of the hybrid host. Moreover competition for water between Si and Zr species lead to decrease on the condensation degree of siloxane species as evidenced by the appearence of characteristic silanol bands only for higher Zr content. This fact is confirmed by 29Si NMR. The optical properties of the di-ureasils were also studied. A broad emission band covering the visible part of the electromagnetic spectrum is attributed to the convolution of two components assigned to radiative recombination processes typical of donor-acceptor pairs occurring in the NH groups of the urea cross-links and in the siliceous nanodomains. With the addition of Zr-AMA broadening is observed. Luminescence spectroscopy shows that the addition of highly emitting Eu3+ â -diketonate complex [Eu(tta)3(H2O)2] (where tta stands for thenoiltrifluoribetadiketonate) to the di-ureasil host has lead to interesting features.
Orientador: Sidney José Lima Ribeiro
Coorientador: Jean-Michel Nunzi
Banca: Luis Antonio Ferreira Martins Dias Carlos
Banca: Cid Bartolomeu de Araujo
Banca: Alain Fort
Doutor
Books on the topic "Filmat material"
Sundarkrishnaa, K. L. Friction Material Composites: Materials Perspective. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.
Find full textBarquinha, Pedro. Transparent oxide electronics: From materials to devices. Hoboken, N.J: Wiley, 2012.
Find full textPolymer films in sensor applications: Technology, materials, devices and their characteristics. Lancaster, Pa: Technomic Pub. Co., 1995.
Find full textMachlin, E. S. Materials science in microelectronics. 2nd ed. Amsterdam: Elsevier, 2006.
Find full textInternational, Conference on Wear of Materials (14th 2003 Washington D. C. ). Wear of materials. Amsterdam: Elsevier, 2003.
Find full textJ, Hampden-Smith Mark, ed. Aerosol processing of materials. New York: Wiley-VCH, 1999.
Find full textNanocomposite coatings and nanocomposite materials. Stafa-Zuerich: Trans Tech Publications, 2009.
Find full textBook chapters on the topic "Filmat material"
Boyd, Ian W. "Material Removal." In Laser Processing of Thin Films and Microstructures, 236–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83136-2_7.
Full textZuber, Hélène, Mélanie Noguero, Christine Le Signor, Richard Thompson, and Karine Gallardo. "Metabolic Specialization of Maternal and Filial Tissues." In Seed Development: OMICS Technologies toward Improvement of Seed Quality and Crop Yield, 407–32. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4749-4_20.
Full textDauscher, Anne, and Bertrand Lenoir. "Thermoelectric Materials." In Pulsed Laser Deposition of Thin Films, 461–85. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/9780470052129.ch19.
Full textTagantsev, Alexander K., L. Eric Cross, and Jan Fousek. "Ferroic Materials." In Domains in Ferroic Crystals and Thin Films, 109–20. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-1-4419-1417-0_3.
Full textMousa, Mohanad, and Yu Dong. "Applications of Bionanocomposite Materials." In Multiscaled PVA Bionanocomposite Films, 159–64. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_7.
Full textCantor, Kirk. "Materials for Blown Film." In Blown Film Extrusion, 1–17. München: Carl Hanser Verlag GmbH & Co. KG, 2018. http://dx.doi.org/10.3139/9781569906972.001.
Full textCantor, Kirk. "Materials for Blown Film." In Blown Film Extrusion, 5–21. München: Carl Hanser Verlag GmbH & Co. KG, 2011. http://dx.doi.org/10.3139/9783446428195.001.
Full textMousa, Mohanad, and Yu Dong. "Materials, Methodology and Characterisation Techniques." In Multiscaled PVA Bionanocomposite Films, 41–54. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8771-9_2.
Full textHarrington, Erin. "The monstrous-maternal." In Women, Monstrosity and Horror Film, 180–222. Abingdon, Oxon ; New York : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315546568-5.
Full textDalton, Larry R., Philip A. Sullivan, Denise Bale, Benjamin Olbricht, Joshua Davies, Stephanie Benight, Ilya Kosilkin, Bruce H. Robinson, Bruce E. Eichinger, and Alex K. Y. Jen. "Organic Electro-Optic Materials." In Organic Thin Films for Photonic Applications, 13–33. Washington, DC: American Chemical Society, 2010. http://dx.doi.org/10.1021/bk-2010-1039.ch002.
Full textConference papers on the topic "Filmat material"
Perry, Joseph, Sundaravel Ananthavel, Kevin Cammack, Stephen M. Kuebler, Seth R. Marder, Mariacristina Rumi, and Brian H. Cumpston. "Materials for two-photon 3D lithography." In Organic Thin Films. Washington, D.C.: OSA, 1999. http://dx.doi.org/10.1364/otf.1999.sub1.
Full textOrabona, Emanuele, Pasqualino Maddalena, and Antonio Ambrosio. "Light-induced material displacement in polymer films: a new tool for optical materials structuring." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/cleo_si.2015.sth4g.5.
Full textHerman, Warren N., and L. Michael Hayden. "Maker fringes revisited: second-harmonic generation from birefringent or absorbing materials." In Organic Thin Films. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/otf.2001.otud5.
Full textOstroverkhov, Victor, Kenneth D. Singer, and Rolfe G. Petschek. "Second-harmonic generation in nonpolar chiral materials: relationship between molecular and macroscopic properties." In Organic Thin Films. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/otf.2001.owa2.
Full textJayaraj, M. K. "Preface: Optoelectronic Materials and Thin Films." In OPTOELECTRONIC MATERIALS AND THIN FILMS: OMTAT 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4861967.
Full textCabrini, Stefano, Carlos Pina-Hernandez, Alexander Koshelev, Keiko Munechika, Michela Sainato, and Scott D. Dhuey. "High-refractive index materials for fabrication of photonic nanostructures (Conference Presentation)." In Nanostructured Thin Films XI, edited by Tom G. Mackay and Akhlesh Lakhtakia. SPIE, 2018. http://dx.doi.org/10.1117/12.2322890.
Full textHuang, Zhengxing, Zhenan Tang, Suyuan Bai, and Jun Yu. "Temperature Dependence of Thermal Conductivity of Amorphous and Crystal Thin Film by Molecular Dynamics Simulation." In ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30085.
Full textAlves Oliveira, Israel, Igor Leonardo Gomes de Souza, and Vitaly F. Rodriguez-Esquerre. "Narrowband plasmonic absorber with phase-change-material layer." In Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVII, edited by Wounjhang Park, André-Jean Attias, and Balaji Panchapakesan. SPIE, 2020. http://dx.doi.org/10.1117/12.2568963.
Full textDalton, Larry R., and Bruce H. Robinson. "Comparison of simple theory and experiment on the electro-optic coefficient of high dipole moment materials." In Organic Thin Films. Washington, D.C.: OSA, 1999. http://dx.doi.org/10.1364/otf.1999.fa1.
Full textAhmad, Faiz, Thomas H. Anderson, Benjamin J. Civiletti, Peter B. Monk, and Akhlesh Lakhtakia. "On optical-absorption peaks in a nonhomogeneous dielectric material over a two-dimensional metallic surface-relief grating." In Nanostructured Thin Films X, edited by Tom G. Mackay, Akhlesh Lakhtakia, and Yi-Jun Jen. SPIE, 2017. http://dx.doi.org/10.1117/12.2274142.
Full textReports on the topic "Filmat material"
Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.
Full textBelzer, Barbara J., and David L. Blackburn. Thin film reference materials development. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.sp.400-100.
Full textFeldman, Albert. Applications of diamond films and related materials. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.sp.885.
Full textFeldman, A., Y. Tzeng, W. A. Yarbrough, M. Yoshikawa, and M. Murakawa. Application of diamond films and related materials:. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.ir.5692.
Full textO'Connor, Charles J. Nanophase Synthesis of Magnetic Materials: Thick Film Ferrite Magnetic Materials. Fort Belvoir, VA: Defense Technical Information Center, February 1998. http://dx.doi.org/10.21236/ada349674.
Full textHoffheins, B. S., and R. J. Lauf. New materials for thick-film electronics. Office of Scientific and Technical Information (OSTI), August 1990. http://dx.doi.org/10.2172/6564672.
Full textChittenden, David H. Thin Film Composite Materials, Phase 2. Fort Belvoir, VA: Defense Technical Information Center, January 1987. http://dx.doi.org/10.21236/ada222882.
Full textWeaver, John H. High Temperature Superconducting Materials: Thin Films, Surfaces, and Interfaces. Fort Belvoir, VA: Defense Technical Information Center, June 1991. http://dx.doi.org/10.21236/ada237359.
Full textPotter, Jr, and Barrett G. Optoelectronic Nanocomposite Materials for Thin Film Photovoltaics. Fort Belvoir, VA: Defense Technical Information Center, June 2012. http://dx.doi.org/10.21236/ada562250.
Full textSprunger, P. T. Alloy Thin-films and Surfaces for New Materials. Final Report. Office of Scientific and Technical Information (OSTI), August 2003. http://dx.doi.org/10.2172/823534.
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