Thermal Optics Effects
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Estudo de propriedades Ãpticas nÃo-lineares da Ãgua em 1,56μm
Neste trabalho foram estudadas as propriedades Ãpticas nÃo lineares de terceira ordem e propriedades tÃrmicas da Ãgua para excitacÃo de comprimento de onda perto da banda de absorcÃo em 1560 nm. As experiÃncias foram feitas usando um laser com pulsos de fentossegundos, largura temporal de 65 fs e taxa de repeticÃo da ordem de 50MHz. A anÃlise do sin
Publicado em: 2008
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2. Externalities of sugarcane productive chain with enphasis in electrical power generation. / Externalidades do ciclo produtivo da cana-de-açúcar com ênfase na produção de energia elétrica
This work presents the evaluation of externalidades in production from sugarcane life cycle, with emphasis at electric power generation. The main objective of this study is to assess the health, social, environmental and economical externalities related with the production process of sugarcane industry from the start point of the productive chain (agricultur
Publicado em: 2007
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3. ProduÃÃo de heterojunÃÃes de polianilina/silÃcio e nanofibras de polianilina para aplicaÃÃes em dispositivos hÃbridos
In this work we develop the methodology for the synthesis and fabrication of Polyaniline (PANI) â Silicon (Si) heterojunctions, with great potential for technological applications as sensors in different areas such as optics, ionizing radiation and gas detection. Besides, we were able to implement the electrospinnin technique with the goal of producing poly
Publicado em: 2006
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4. Estudo de propriedades ópticas não-lineares de cristal líquido dopado com corante em função da temperatura. / Studies of non-linear optical properties of dye doped liquid crystal in function of the temperature.
With the objective of studying the effects due to the addition of a dye in a thermotropic liquid crystal (LC), we investigated in this work the influence of the temperature in the reorientation of the molecules of this compound, as well as the refraction index and the non linear absorption, in the presence of a electromagnetic field. The studied LC presents
Publicado em: 2000
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5. Aplicação da técnica de varredura-Z para a determinação de parâmetros térmicos. / Z-scan technique to evaluate thermal parameters.
The Z-Scan technique is the most popular one for the determination of the nonlinear index of refraction (n2) of transparent media. In this work we present a theoretical analysis and results of the reflection z-scan technique, aiming the research of thermal effects in highly absorbing materials. Extensions of the technique, such as the time resolved z-scan an
Publicado em: 1998