Quartz Piezoelectric Sensor
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Desenvolvimento de imunossensores piezelétrico e eletroquímico para detecção de amostras de interesse agronômico e de saúde / Desenvolvimento de imunossensores piezelétrico e eletroquímico para detecção de amostras de interesse agronômico e de saúde / Development of piezoelectric and electrochemical immunosensors to detect samples of agronomic interest and public health / Development of piezoelectric and electrochemical immunosensors to detect samples of agronomic interest and public health
This work shows development of immunosensors for agronomic interest and public heath. The first was a piezoeletric immunosensor to detect a cysteine peptidase, a potencial biomarker for Xanthomonas citri subsp. citri that cause a citrus Canker. Another was electrochemical immunosensor based on gold nanoparticles as a label and magnetic beads as capture phase
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2012
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2. Hydrophobic plasma polymerized hexamethyldisilazane thin films: characterization and uses
Hexametildisilazane (HMDS) plasma polymerized thin films obtained using low frequency power supplies can be used to make adsorbent films and turn surfaces hydrophobic. The aim of this work was to verify the hydrophobicity and adsorption properties of HMDS thin films (with and without the addition of oxygen, resulting in double or single layer films) obtained
Materials Research. Publicado em: 2006-03
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3. Study abaout the determination of benzene and ammonia in air using quartz piezoeletric sensor. / Estudo sobre a determinação de benzeno e amônia no ar, utlizando sensor piezelétrico de quartzo
The objective of this work was to study, develop and evaluate coatings for detecting benzene and ammonia in atmospheric air, by using a piezoelectric quartz sensor. Nowadays, piezoelectric quartz sensors are very important in Analytical Chemistry due to their numerous aplications (in gaseous fase or in solution). This method is based on the fact that the qua
Publicado em: 2005
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4. Detecção piezelétrica não-gravimétrica de boro empregando cristal de quartzo com eletrodo separado e superfície quimicamente modificada / Non-gravimetric piezoelectric detection of boron by using quartz crystal with electrode separated and chemically modified surface
Piezoelectric quartz crystals (PQCs) with electrode-separated configuration and chemically modified surface were used to develop a boron sensor. A detection cell was built in such a way that a stainless-steel electrode was held at a short distance (0.3 mm) from the PQC surface, whose original gold electrode was removed. By using impedance spectroscopy, oscil
Publicado em: 2003
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5. Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group
Um sensor a cristal piezelétrico de quartzo com eletrodos separados e superfície quimicamente modificada foi proposto. A silanização com N-2-aminoetil-3-aminopropiltrimetoxisilano permitiu a imobilização do grupo N-2-aminoetil-3-aminopropilsilano sobre a superfície de um cristal de quartzo de 3,5 MHz. Uma cela em fluxo foi fabricada em poli(metacrilat
Journal of the Brazilian Chemical Society. Publicado em: 2001
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6. Cristais piezelétricos de quartzo com eletrodos separados e superfície modificada como sensores em fase líquida / Piezoelectric quartz crystals with electrodes separated and modified surface as sensors in liquid media
Esta dissertação descreve a construção e avaliação de um detector para fase líquida utilizando cristal piezelétrico de quartzo (PQC) (3,579545MHz) com a configuração de eletrodos separados. A cela de detecção possui dois eletrodos de latão, que foram posicionados a uma pequena distância (cerca de alguns décimos de milímetros) da superfície d
Publicado em: 1999