The main aim of this study is to extending the holographic interferometry technique to measure the out-of-plane displacement of an object subjected to both temperature and displacement field. It is noted that both the out-of-plane displacement and the ambient temperature change can cause image fringes. Therefore, an auxiliary object is used to identify the fringe numbers caused by the ambient temperature change during the experiment. The warpage measurement of a PBGA package is used as an example. It can be shown that the proposed method works

In this study, a high power Q-switch pulse laser has been used as the writing beams. The laser-induced holographic gratings in the DR1-doped liquid crystal samples and the DR1-PMMA polymer thin films were investigated by changing the temperature of samples and the angles of two writing beams. The He-Ne cw laser has been used as a real-time probe beam to detect the first order diffraction signals. Without external field, the gratings are the results of concentrations and diffusions of azo dye isomers. The diffusion model has been utilized to analyze the first order diffraction signals in order to understand the mechanics of gratings and the effect of temperature and angle.

Submitted by Tereza Cristina Ramponi (teka_ramponi@hotmail.com) on 2018-11-22T17:56:14Z No. of bitstreams: 1 Dissertação Tereza.pdf: 1217562 bytes, checksum: b8d79b0ddc1924c97c40a224412cd9f7 (MD5) / Rejected by Ana Paula Santulo Custódio de Medeiros null (asantulo@rc.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: - Falta agradecimento à CAPES: Se você recebeu financiamento da CAPES, é necessário colocar nos agradecimentos a seguinte frase: "O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Código de Financiamento 001". Veja abaixo a portaria da CAPES: PORTARIA Nº 206, DE 4 DE SETEMBRO DE 2018 Dispõe sobre obrigatoriedade de citação da CAPES O PRESIDENTE DA COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR, no uso das atribuições que lhe foram conferidas pelo art. 26 do (a) Estatuto, aprovado (a) pelo Decreto nº 8977, de 30/01/2017, e CONSIDERANDO o indicado nos Editais da CAPES, nos Termos de Compromisso de Bolsista, nos regulamentos de bolsas no exterior e de bolsas no país, no Manual de AUXPE, e no termo de adesão ao Portal de Periódicos; CONSIDERANDO o constante dos autos do processo nº 23038.013648/2018-51, resolve: Art. 1º Os trabalhos produzidos ou publicados, em qualquer mídia, que decorram de atividades financiadas, integral ou parcialmente, pela CAPES, deverão, obrigatoriamente, fazer referência ao apoio recebido. Art. 2º Para fins de identificação da fonte de financiamento fica autorizada a utilização do código 001 para todos os financiamentos recebidos. Art. 3º Deverão ser usadas as seguintes expressões, no idioma do trabalho: "O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Código de Financiamento 001 "This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001" Art. 4º Fica o pró-reitor de pós-graduação ou congênere, responsável pela divulgação e aplicação da regra dentro das Instituições de Ensino Superior que recebem apoio da CAPES. Art. 5º A falha em obedecer esta norma implicará em mudanças eventuais nos apoios da CAPES para as instituições e pesquisadores envolvidos, a partir de 2020. Art. 6º Esta Portaria entra em vigor na data de sua publicação. ABILIO A. BAETA NEVES Fonte: CAPES Diário Oficial da União: http://pesquisa.in.gov.br/imprensa/jsp/visualiza/index.jsp?data=05/09/2018&jornal=515&pagina=22 Agradecemos a compreensão. on 2018-11-23T11:02:56Z (GMT) / Submitted by Tereza Cristina Ramponi (teka_ramponi@hotmail.com) on 2018-11-23T16:21:41Z No. of bitstreams: 1 Dissertação Tereza C. Ramponi-merged.pdf: 1221305 bytes, checksum: cbffcb57bb1a7621390f870e851382f0 (MD5) / Approved for entry into archive by Ana Paula Santulo Custódio de Medeiros null (asantulo@rc.unesp.br) on 2018-11-23T17:02:06Z (GMT) No. of bitstreams: 1 ramponi_tc_me_rcla.pdf: 1200399 bytes, checksum: d003d0863c0473e1dd98e7a7ea4aa402 (MD5) / Made available in DSpace on 2018-11-23T17:02:06Z (GMT). No. of bitstreams: 1 ramponi_tc_me_rcla.pdf: 1200399 bytes, checksum: d003d0863c0473e1dd98e7a7ea4aa402 (MD5) Previous issue date: 2018-09-28 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo desse trabalho concentra-se em estudar uma nova metodologia para resolução de problemas em matéria condensada, nos quais as partículas estão fortemente acopladas, não permitindo um tratamento perturbativo padrão. Esse método, originário da dualidade AdS/CFT (Anti-de Sitter/Conformal Field Theory), está sendo conhecido na comunidade de matéria condensada como Dualidade Holográfica. Como aplicação desta teoria, o comportamento de supercondutores foi escolhido. A metodologia da dualidade holográfica utiliza uma teoria de campos em um espaço-tempo curvo. Partindo da ação associada é possível obter as equações de movimento das partículas envolvidas. A seguir foi empregado o uso do software Mathematica-Wolfram, para a resolução das Equações Diferenciais através do Método de Frobenius. Os resultados obtidos expressam que os valores esperados de operadores, as chamadas funções de correlação, são bem similares à curva de intervalo de energia previsto pela teoria BCS em função da temperatura. Também infere-se a partir da fórmula de Kubo, que os resultados numéricos da condutividade elétrica, claramente indicam uma condutividade infinita abaixo de uma determinada temperatura crítica Tc, resultando em um supercondutor. / The objective of this work is to study a new methodology for solving problems in condensed matter, in which the particles are strongly coupled, not allowing a standard perturbative treatment. This method, originating from the AdS / CFT (Anti-Sitter / Conformal Field Theory) duality, is being known in the condensed matter community as Holographic Duality. As an application of this theory, the behavior of superconductors was chosen. The holographic duality methodology uses a field theory in a curved space-time. From the associated action it is possible to obtain the equations of motion of the particles involved. Next, the use of the Mathematica-Wolfram software was used to solve the Differential Equations by the Frobenius Method. The obtained results express that the expected values of operators, so-called correlation functions, are very similar to the energy interval curve predicted by the BCS theory as a function of temperature. It is also inferred from the Kubo formula that the numerical results of electrical conductivity clearly indicate an infinite conductivity below a given critical temperature Tc, resulting in a superconductor. / CAPES: 001

Monitoring and controlling pH is of utmost importance in bioprocessing as it directly affects product yield and quality. Multiplexed experiments can be performed in nanobioreactors for optimisation of yield and cell heterogeneity in a relatively quick and inexpensive manner. In this thesis, a pH holographic sensor (holosensor) is miniaturised to 3.11 nL in volume and integrated into a PDMS-glass microfluidic chip for monitoring the growth of Lactobacillus casei Shirota. Although other established methods for monitoring cell cultures can be utilised, miniaturised holosensors enable real-time and non-consumptive monitoring of the bacterial cell culture growth medium. The 2-hydroxyethylmethacrylate (HEMA)-co-2-(trifluoromethyl) propenoic acid (TFMPA) holosensor was fabricated using an adapted technique from photolithography, coupled with the use of a polymerisation inhibitor to control the gel polymerisation with diameters not exceeding a standard deviation of 0.067. The hologram brightness was optimised to 1.05 ms integration time with 36X magnification using a low power (0.290 mW) 532 nm green continuous wave (CW) laser with a devised beam-offset technique. The holosensor was characterised with ionic strength balanced (9.50 mS/cm) McIIvaine pH buffers and a calibration curve plotted together with measured ionic strength, optical density at 600 nm (OD600) and pH. Correspondingly, RGB-xyY transformed values were plotted in the CIE 1931 chromaticity diagram. Later, a miniaturised 0.4φ HEMA-co-TFMPA holosensor and array was also demonstrated. Together with the 3.0φ holosensor, an accuracy parameter for the 0.4φ spot and array holosensors were calculated to be 99.08%, 99.38% and 97.77% respectively. Further work involved studying the issues associated with fabricating gels with unusually flat gel profiles. Other preliminary results suggested the alternative of utilising polymers as a holosensor substrate, together with a dye-free method for hologram fabrication, outlined the prospective possibility of a miniaturised holosensor integrated into a polymer microfluidic chip with the flexibility of hologram colour customisation for cell culture monitoring.

Holography is a form of 3D imaging. Its practice spans the disciplines of science and art. My original contribution to knowledge is in making a claim for holography as a new context for writing ekphrastic poetry which most usually refers to poetry written in dialogue with the visual. The scholarship of ekphrasis cites examples of poems written in response to painting, sculpture, photography and film but not to holography. This is practice-led research and my collection of poetry Equinoctial arising from it derives its structure, and the linguistic and formal properties of its poems, from a process of holographic enquiry arising from processes of holography and the properties of holograms. Furthermore, I construe this holographic enquiry as a form of ekphrastic enquiry. My primary sources for ekphrastic dialogues are the holopoetry and theories of holopoetry of Brazilian artist and poet, Eduardo Kac; the essay: ‘Stopping Time: Harrison’s Holograms’, and holograms of John Harrison’s timekeeper, ‘H4’ by Martin Richardson; the essays in The Aerial Letter and the novel, Picture Theory by French-Canadian writer, Nicole Brossard. For Brossard, the hologram is a trope associated with liberatory and visionary feminist reading and writing practices. The scholarship of ekphrasis revels its gendered nature which I go on to scrutinize via the various lenses of my primary sources. In order to consolidate my positioning as a feminist researcher, I develop the methodology, ‘flâneuserie’ from poetry and poetics by women poets and scholars which describes an agency-making approach to bringing together the creative and critical components of a practice-led thesis in creative writing in a poetics I come to describe as ‘holopoetics’. I conclude by upholding holography as a technology of perception that emphasises the position of the viewer or reader in relation to artwork and poem, and, in doing so offers multiple perspectives and possibilities of interpretation. Throughout, I emphasise the significance of my study as an example of concept-driven practice-led research in creative-writing which upholds a claim for poetry as new knowledge.

Orientador: Lucia Helena Deliesposte Cescato / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin / Made available in DSpace on 2018-08-08T11:13:35Z (GMT). No. of bitstreams: 1 Menezes_JacsonWeberde_M.pdf: 5177344 bytes, checksum: 63bfde864e58f6813890fced4db8f389 (MD5) Previous issue date: 2006 / Resumo: Nesta dissertação foi desenvolvido um novo método de gravação de estruturas bidimensionais em fotorresina, baseado na superposição de três exposições holográficas. Utilizando esta técnica, foi possível gravar estruturas de seção transversal circular. Isso resolve o problema da redução da área do gap fotonico que ocorre com as estruturas cilíndricas de seção transversal elíptica, obtida quando são utilizadas apenas duas exposições. Controlando-se a fase entre a terceira exposição e as duas anteriores é possível também gerar padrões hexagonais com diferentes formas de cilindros, que correspondem aos "átomos" do cristal fotonico, que podem apresentar novas propriedades fotonicas. Para projetar cristais fotonicos que apresentam gap fotonico na região de interesse do espectro eletromagnético, foi utilizado um programa baseado no método dos elementos finitos. Nestes projetos foram consideradas as dimensões e formas que podem ser fabricadas utilizando a técnica de dupla exposição holográfica assim como foi utilizada a aproximação de índice de refração equivalente para levar em conta a espessura da camada fotonica. Utilizando a superposição de duas exposições holográficas, associadas à litografia por corrosão por íon reativo, foram feitas tentativas de fabricação das camadas fotonicas projetadas em três materiais diferentes: silício policristalino, silício amorfo hidrogenado e silício cristalino / Abstract: In this work, it was developed a new recording method of the 2D structures in photoresist, based on the superimposition of three holographic expositions. This technique solves the problem of asymmetry of hexagonal structures, arising from the superimposition of only two expositions, which causes a strong reduction of the photonic band gap area. By controlling the phase-shift between the third exposition and the former two exposures, it is possible to generate new hexagonal patterns that can present different properties. In the design of the 2D photonic layers that present Photonic Band Gaps in the near infra-red region of the electromagnetic spectrum, it was used a software based on finite elements method. To consider the thickness of the photonic layer it was used the approach of equivalent refractive index. In the design we take into account the dimensions and shapes that can be fabricated using the technique of holographic lithography associated with RIE (Reactive Ion Etching). For fabrication of the structures we used double holographic exposures followed by RIE lithography in three different materials: poly-silicon, amorphous silicon and crystalline silicon / Mestrado / Física da Matéria Condensada / Mestre em Física

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京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第19494号 / 理博第4154号 / 新制||理||1597(附属図書館) / 32530 / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授 川合 光, 教授 畑 浩之, 教授 田中 貴浩 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM

No description available.

In this study, an investigation was undertaken to research the use of holographic phase masks (HPMs) in photo-thermo-refractive (PTR) glass as mode converters for linearly polarized (LP) fiber modes. A Spatial Light Modulator (SLM) was used to generate higher-order transverse fiber modes LPm,n. Under proper incidence condition on the holographic device, LPm,n modes are diffracted and simultaneously converted into higher order or lower order LP modes. The process was analyzed by imaging the far field on a CCD camera. It is demonstrated that using this novel method of converting transverse fiber modes several combinations of LP modes can be converted to each other with mode conversion efficiencies up to 70%. Mode purities were found to be around 85% for up conversion and around 90% for down conversion, respectively. It is noticed that this approach has several promising applications such as mode multiplexing, beam cleaning and power scaling of higher-order mode fiber lasers and amplifiers by combining mode conversion and beam combining.