Hydrogen Implantation
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Análise microbiológica comparativa da ação de diferentes agentes descontaminantes sobre superfícies de titânio / Microbiological comparison of different decontaminant agents on rough and smooth titanium surfaces: microbiological analysis
Actually, the titanium implants are a successful option of treatment in Dentistry. However, failures are possible to occur due to surface exposition to oral environment immediately or lately after its implantation. The titanium implants surfaces can be infected by bacteria and its products similarly to dental roots surfaces. The contaminants turn the inflamm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2011
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2. Defect engineering in H and He implanted Si
The present work relates an investigation of H2 + and He+ coimplanted (001)-Si substrates. The phenomena of blistering and exfoliation were studied by SEM as a function of the implantation parameters (energy, fluence, current and H/He ration) and annealing protocol. A window behavior as function of the implanted fluence was observed and two distinct fluence
Publicado em: 2009
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3. Development of field emission devices fabricated by HI-PS technique. / Desenvolvimento de dispositivos de emissão por efeito de campo elétrico fabricados pela técnica HI-PS.
Um novo processo de fabricação de dispositivos de emissão de campo (FE) em silício (Si) é apresentado nesta tese, baseado na potencialidade de utilização da técnica de microusinagem denominada HI-PS (Hydrogen Ion Porous Silicon), que trata da combinação entre processos de implantação de hidrogênio e silício poroso. Por meio do procedimento prop
Publicado em: 2008
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4. Fabricação de novas heteroestruturas a partir de estruturas SOI obtidas pela técnica smart-cut. / New semiconductor heterostructures based on SOI structures obtained by "smart-cut" process.
In this work we study new semiconductors heterostructures, based on SOI (Silicon-On- Insulator) structures obtained by "Smart-Cut" process, that were studied in the last years at Departamento de Engenharia de Sistemas Eletrônicos da Escola Politécnica da Universidade de São Paulo (EPUSP). This technique combines high-dose hydrogen ion implantation (I/I) a
Publicado em: 2006
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5. Surface treatments of a iron aloy by nitrogen ions / Tratamentos de superficies de uma liga ferrosa por ions de nitrogenio
The objective of this project is to study processes of plasma surface treatment with special emphasis to the differences these techniques might show in relation to others, looking forward to understand the process from surface phenomena. Two kinds of surface treatment have been studied, including three different techniques: ion beam nitriding, pulsed plasma
Publicado em: 2006
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6. Elevated levels of erythrocyte-conjugated dienes indicate increased lipid peroxidation in schistosomiasis mansoni patients
Schistosoma mansoni causes liver disease by inducing granulomatous inflammation. This favors formation of reactive oxygen species, including superoxide ions, hydrogen peroxide and hydroxyl radicals all of which may induce lipid peroxidation. We have evaluated lipid peroxidation in 18 patients with hepatosplenic schistosomiasis mansoni previously treated with
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-07