Resonant Cavities
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. The Surface Treatment of Niobium Superconducting Reentrant Cavities by Means of High Temperature Nitrogen Plasma Based Ion Implantation
High Temperature Nitrogen Plasma Based Ion Implantation (HT-NPBII) has been used to treat the surface of niobium superconducting reentrant cavities, which are part of parametric transducers in a resonant-mass gravitational wave detector. The aim is to enhance the corresponding electrical quality factors (Q-factors) which are closely related with the increase
Mat. Res.. Publicado em: 13/12/2019
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2. Microlasers de cavidades estadio aplicados a detecção nanovolumetrica / Stadium cavities microlasers applied to the nanovolumetric detection
This work presents the development of resonant cavities based on chaotic billiard geometries built with semiconductor active optical medium for sensing applications. In spite of the classically chaotic behavior of the stadium, the quantum description of the problem in the semi-classical limit shows unexpected accumulations of the density of probability on cl
Publicado em: 2010
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3. Desenvolvimento de transdutores paramétricos de alta sensibilidade para o detector de ondas gravitacionais mario schenberg
- The main purpose of this work was to build a set of parametric transducers of reentrant cavity type with high sensitivity and pumped at to be used in the gravitational wave detector Mario Schenberg. These transducers will monitor the mechanical vibrations of the -diameter spherical antenna in the frequency range. Niobium with high Tantalum impurities and w
Publicado em: 2009
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4. Modeling of welding machines for electromagnetic induction in RF / Modelagem de maquinas de solda por indução eletromagnetica em RF
Este trabalho trata do estudo de máquinas industriais de solda por indução eletromagnética na faixa de Rádio Freqüência (RF), visando modelos robustos baseados em circuitos de parâmetros concentrados. Tipicamente as máquinas industriais para a aplicação em questão, apresentam três estágios; a fonte (geração de energia eletromagnética), blind
Publicado em: 2009
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5. Estruturas multicamadas de silício poroso para aplicação em dispositivos de cristais fotônicos. / Porous silicon multilayers structures for application in photonic crystals device.
The aim of the present work was to study and analyze the optical response of one- dimensional (1D) photonic crystal devices obtained by using the porous silicon technology. The experimental results obtained from this work showed the significant contribution to the development of a technological process for optical device fabrication in the silicon substrate.
Publicado em: 2007