A5078452917- Corrosion Behavior and Inhibition
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Hydrogen embrittlement and corrosion behaviors in metals
- Water Quality Monitoring and Analysis
- Various Chemistry Research Topics
- Electrochemical sensors and biosensors
- Advanced Chemical Sensor Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Conducting polymers and applications
- Plasmonic and Surface Plasmon Research
- Titanium Alloys Microstructure and Properties
- Bone Tissue Engineering Materials
- Nanowire Synthesis and Applications
- Silicon Nanostructures and Photoluminescence
- Advanced biosensing and bioanalysis techniques
- Molecular Junctions and Nanostructures
- Orthopaedic implants and arthroplasty
- Welding Techniques and Residual Stresses
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Semiconductor materials and devices
- Photonic Crystals and Applications
- Gas Sensing Nanomaterials and Sensors
Universidade Federal do ABC
2016-2023
Universidade de São Paulo
2007-2021
Rede de Química e Tecnologia
2019
University of Victoria
2016
Villares Metals (Brasil)
2007
Control of the surface plasmon resonance (SPR) enhanced light transmission through array nanoholes on gold films was achieved by modifying metal with a thin layer electroconductive polymer film. The electrochromic properties were then triggered tuning electrochemical potential. Conducting polymer-modified nanohole electrodes prepared electrodeposition polypyrrole (PPy) using cyclic voltammetry. Only surfaces inside holes accessible for film formation. doping level PPy tuned potential...
This work deals with a portable device system applied to detect and classify different metallic ions as proposed developed, aiming its application for hydrological monitoring systems such rivers, lakes groundwater. Considering the features, colorimetric was developed by using multispectral optoelectronic sensor. All technology of quantification classification sensors fully integrated in embedded hardware FPGA ( Field Programmable Gate Array) software based on virtual instrumentation (NI...
Abstract In order to evaluate its application as a dental prosthesis material, CoCrW alloy was subjected in vitro cytotoxicity test, surface characterization and electrochemical studies performed artificial saliva 0.15 mol.L-1 NaCl medium. The used techniques were: anodic polarization curves, chronoamperometric measurements, impedance spectroscopy (EIS), scanning electron microscopy (SEM), energy dispersive X-ray (EDS) analysis photoelectron (XPS). Cytotoxicity test also performed. behavior...
In the present work, a portable device system applied in detection and classification of different metallic ions was proposed developed, aiming at its application monitoring hydrological systems like rivers, lakes groundwater. Considering features, colorimetric developed by using multispectral optoelectronic sensor. All technology quantification Optoelectronic Multispectral sensors fully integrated embedded hardware FPGA software based on virtual Instrumentation (NI LabView ®). The...
O aço inoxidável P558, isento de níquel, vem sendo estudado pelo grupo com o objetivo verificar a viabilidade do seu emprego em implantes ortopédicos. Em trabalhos anteriores, foi mostrado, por técnicas eletroquímicas estacionárias, que ele apresenta, meio cloreto sódio 0,11 mol L-1, comportamento semelhante ao ISO 5832-9 e bem superior 5832-1, mais conhecido como F138. Nesse trabalho, estudada evolução temporal da interfase P558/NaCl L-1 empregando técnica espectroscopia impedância...
Detection of a single molecule is highly fluctuating event in surface-enhanced Raman scattering (SERS) measurements. Explaining these dynamic blinking events remains challenge. To investigate this behavior, we manufactured Au nanocylinder arrays. A monolayer nicotinamide adenine dinucleotide (NAD) on the array exhibited intense and lines. Persistent lines were not observed over time. These fluctuations discussed within back-action parametric interaction between plasmon mode vibrational...
This work presents an experiment done for chemistry students about the effect of nature electrolyte and interface on hydrogen evolution reaction by electrolysis.Two techniques are suggested: method A -two identical copper electrodes in a direct current circuit B -three different dc potentiostatic circuit, with electrode (working), platinum (counter) silver-silver chloride-KCl sat (reference).The was observed using technique increasing potentials between two visual observation gas production...
The Oxygen (O <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> ) gas detection is important in many activities of life and environment control. present work proposed a photoluminescent O sensor device based the metal insulating semiconductor (MIS) capacitor. system used MIS capacitor as photodetector where it was directly integrated active film. results obtained pointed out that exhibit high sensitivity to presence molecules, showing...
Foi estudado o comportamento eletroquímico a 37°C do aço inoxidável ISO 5832-9, em meios de NaCl 0,9 %, Ringer Lactato e meio mínimo Eagle (MEM), por voltametria linear análises da superfície microscopia eletrônica varredura (MEV) espectroscopia dispersão energia (EDS). Foram feitos ensaios mecânicos testes toxicidade. O 5832-9 se encontra passivado no potencial corrosão não apresenta pite nos três estudados toda faixa investigada, desde até 50 mV acima transpassivação. Em MEM, entanto, as...
Nowadays the metal ions detection and classification in-site in real time river like environment are very important task for environmental control. In this sense, present work proposed a portable multispectral spectrometer based photodetector eliminating way complex expensive conventional monochromator system. The acquisition, control processing of signals performed on FPGA technology, which was developed virtual instrumentation software (NI LabView ®), manufactured by National Instruments,...