Effect of a Silver Nanoparticles Solution on Staphylococcus aureus and Candida spp.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Silver Molybdate and Silver Tungstate Nanocomposites with Enhanced Photoluminescence

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Proposta de uma automação residencial para um anteprojeto de uma instalação eletrica

The human social organization has undergone major changes in recent years. The technological and digital revolutions accelerated the process of dissemination and evolution of the knowledge in all sciences, from social studies to nanotechnology. This process led to many advances that have enabled the emergence of new markets. Among these new markets, residential automation shows to be a market of great potential, seeking to meet the needs of residents, in order to make their daily practice and as fast as the rhythm of present life requests. To perform this task the residence stops being a passive place and becomes an active and controllable system, where actions may occur without the need for direct human interaction. The aim of this work is designing the electrical installation of a residence seeking better use of energy and show the technology diversity involving intelligent houses

Nanoregulação: Avaliação dos cenários internacional e brasileiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Tailoring the refractive index of Ge-S based glass for 3D embedded waveguides operating in the mid-IR region

The photosensitivity of GeSx binary glasses in response to irradiation to femtosecond pulses at 800 nm is investigated. Samples with three different molecular compositions were irradiated under different exposure conditions. The material response to laser exposure was characterized by both refractometry and micro-Raman spectroscopy. It is shown that the relative content of sulfur in the glass matrix influences the photo-induced refractive index modification. At low sulfur content, both positive and negative index changes can be obtained while at high sulfur content, only a positive index change can be reached. These changes were correlated with variations in the Raman response of exposed glass which were interpreted in terms of structural modifications of the glass network. Under optimized exposure conditions, waveguides with positive index changes of up to 7.8x10−3 and a controllable diameter from 14 to 25 μm can be obtained. Direct inscription of low insertion losses (IL = 3.1 – 3.9 dB) waveguides is demonstrated in a sample characterized by a S/Ge ratio of 4. The current results open a pathway towards the use of Ge-S binary glasses for the fabrication of integrated mid-infrared photonic components.

Síntese de nanopartículas de sulfeto de cobre, preparação e estabilidade coloidal de fluidos trocadores de calor em meio aquoso

Pós-graduação em Química - IQ