Integrated Electrodes
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Removal of organic matter from pre-treated domestic sewage in anaerobic biological reactor by a combined system of electrolytic and biological aerobic treatment
Resumo Os processos biológicos são os métodos mais difundidos para o tratamento de águas residuárias. No entanto, eles têm limitações para degradar poluentes tóxicos e refratários, contaminantes, que os processos eletroquímicos podem remover. Portanto, o objetivo da pesquisa foi verificar a possibilidade de tratamento de esgoto por um processo bio
Rev. Ambient. Água. Publicado em: 22/07/2019
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2. Determinación del área de superficie real de electrodos de titanio modificado con platino por voltamperometría cíclica
ABSTRACT The surface area of Ti/TiO2-Pt electrodes (ASr) in contact with 0.010 M HClO4 solutions was determined by Cyclic Voltammetry (CV) and Atomic Force Microscopy (AFM) techniques. The Ti/Pt/TiO2 electrodes with different amounts of electrodeposited Pt (1, 5 and 10 seconds) were polarized up to 1.5 V vs. Ag/AgCl (sat. KCl) and stabilized at the final pot
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Dispositivos oticos baseados em fibras de cristal fotonico com eletrodos integrados / Optical devices based on photonic crystal fibers with integrated electrodes
In this work we present a study and the development of all-fiber optical devices. For this purpose we exploited the new possibilities brought by the development of Photonic Crystal Fibers. PCF s are special kind of optical fibers with a regular pattern of air holes in their transverse section, resembling a photonic crystal. Photonic Crystal Fibers not only h
Publicado em: 2009
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4. Characterization of a microvalve using the piezoelectric polymer poly(viniyidene fluoride) (PVDF) integrated to a micronozzle end / Caracterização de uma microválvula fabricada usando o polímero piezoelétrico poli(fluoreto de vinilideno) (PVDF) integrada a saída de um microbocal sônico
This work describes the fabrication and test of a microvalve integrated in a micronozzle. The technique used to fabricate the micronozzles was powder blasting using aluminum oxide powder and glass as substrate. The microvalves are actuators made from PVDF (poli(vinylidene fluoride)), that is a piezoelectric polymer. The micronozzles have convergent-divergent
Publicado em: 2007
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5. Desenvolvimento de micropontas de silício com eletrodos integrados para dispositivos de emissão por efeito de campo. / Development of silicon microtips with integrated electrical contacts for field emission devices.
This work presents a fabrication method of silicon microtips with integrated electrical contacts into the structure. Our motivation is the future development of field emission devices - FED, however our focus in this research is the microstructure fabrication process. This method is based on: (i) anisotropic under-etch method that occurs in the silicon subst
Publicado em: 2007
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6. Glucose microsensor integrated into a catheter / Microssensor para glicose integrado a catéter
The development of electrochemical sensors for glucose integrated into catheters has as basic requisite its miniaturization and the requirement of functioning for relatively long periods in the intravenous environment. The function of such sensors is the continuous monitoring on real time of the clinical evolution of patients hospitalized in intensive therap
Publicado em: 2007
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7. Construção e caracterização de fotodetetores metal-semicondutor-metal (MSM). / Construction and characterization of metal-semiconductor-metal (MSM) photodetectors.
The goal of this work was the fabrication of Metal-Semiconductor-Metal (MSM) photodetectors with the following characteristics: dark current of about 1 nA, responsivity of about 0.1 A/W and dark/photocurrent ratio of at least 10. These values ensure that the photodetectors have enough sensitivity to be used in integrated optic sensors. All materials used in
Publicado em: 2006
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8. Development of a DC-plasma torch constructed with graphite electrodes and an integrated nebulization system for decomposition of CCl4
O presente trabalho consiste no desenvolvimento de uma tocha de plasma de corrente contínua com eletrodos de grafite e sistema de nebulização integrada para a eliminação de resíduos líquidos organoclorados (tetracloreto de carbono) em pequena escala. Os gases resultantes da pirólise do tetracloreto de carbono pelo plasma foram coletados e identificad
Journal of the Brazilian Chemical Society. Publicado em: 2005-06
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9. "Fabricação e avaliação de microdispositivos para eletroforese com detecção eletroquímica" / "Fabrication and Evaluation of Electrophoresis Microdevices coupled with Electrochemical Detection"
This work describes the development of electrophoresis microchip fabricated by direct-printing and photolithographic processes. The channel structures of the devices fabricated by direct-printing process are defined by polyester films (base and cover) and by a toner layer (walls). The characterization of toner surface and composition were necessary for a bet
Publicado em: 2004
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10. Approximate solutions of problems involving charge transport in dielectrics using Galerkins method / Soluções aproximadas pelo Método de Galerkin de problemas envolvendo o transporte de cargas em isolantes.
Approximate solutions for some problems of charge transport in dielectrics, unsolved yet by exact methods, are presented using Galerkins Method. This allows to transforming the system of partial differential equations, describing transport with trapping, into a system of ordinary differential equations which are, then, integrated numerically. Whenever possib
Publicado em: 1982
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11. Wireless Neural Stimulation in Freely Behaving Small Animals
We introduce a novel wireless, low-power neural stimulation system for use in freely behaving animals. The system consists of an external transmitter and a miniature, implantable wireless receiver–stimulator. The implant uses a custom integrated chip to deliver biphasic current pulses to four addressable bipolar electrodes at 32 selectable current levels (
American Physiological Society.
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12. Automated parallel DNA sequencing on multiple channel microchips
We report automated DNA sequencing in 16-channel microchips. A microchip prefilled with sieving matrix is aligned on a heating plate affixed to a movable platform. Samples are loaded into sample reservoirs by using an eight-tip pipetting device, and the chip is docked with an array of electrodes in the focal plane of a four-color scanning detection system. U
The National Academy of Sciences.