Equivalent circuit of polypyrrole-based QCM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F12%3APU99884" target="_blank" >RIV/00216305:26220/12:PU99884 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Equivalent circuit of polypyrrole-based QCM

Popis výsledku v původním jazyce

Quartz crystal microbalance belongs to a group of high-sensitive chemical sensors for detection of substances dispersed or dissolved in gas or liquid environments. Several equivalent circuits exist for the QCM sensor. Design of these circuits depends mainly on an active layer of sensor as well as on an environment, in which a sensor is applied. An equivalent circuit is usually separated in two parts; the first one corresponds to quartz crystal, while the second part relates to chemical and physical properties, such as concentration of detected matter, viscosity of an active layer, viscosity of environment, etc.. For design of driven-oscillator circuit of QCM, it is necessary to develop accurate equivalent circuit, which is able to simulate behavior of QCM for a large range of concentration of detected matter. In the paper, the study is provided on polypyrrole-based QCM. Polypyrrole is suitable material for humidity measurements, and was deposited by matrix assisted pulsed laser evaporation technique in our case for two values of thicknesses. Electrical characteristics of polypyrrole-based QCM were measured for four concentrations of relative humidity. These experimental data are in good agreement with calculations based on our equivalent circuits. We can accurately simulate behavior of QCM in gas environment for various concentrations.

Název v anglickém jazyce

Equivalent circuit of polypyrrole-based QCM

Popis výsledku anglicky

Quartz crystal microbalance belongs to a group of high-sensitive chemical sensors for detection of substances dispersed or dissolved in gas or liquid environments. Several equivalent circuits exist for the QCM sensor. Design of these circuits depends mainly on an active layer of sensor as well as on an environment, in which a sensor is applied. An equivalent circuit is usually separated in two parts; the first one corresponds to quartz crystal, while the second part relates to chemical and physical properties, such as concentration of detected matter, viscosity of an active layer, viscosity of environment, etc.. For design of driven-oscillator circuit of QCM, it is necessary to develop accurate equivalent circuit, which is able to simulate behavior of QCM for a large range of concentration of detected matter. In the paper, the study is provided on polypyrrole-based QCM. Polypyrrole is suitable material for humidity measurements, and was deposited by matrix assisted pulsed laser evaporation technique in our case for two values of thicknesses. Electrical characteristics of polypyrrole-based QCM were measured for four concentrations of relative humidity. These experimental data are in good agreement with calculations based on our equivalent circuits. We can accurately simulate behavior of QCM in gas environment for various concentrations.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/MEB091129" target="_blank" >MEB091129: Šumová diagnostika tlustovrstvových senzorů tlaku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

MIDEM Society for Microelectronic, Electronic Components and Materials - Conference 2012 Proceedings

ISBN

978-961-92933-2-4

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

405-409

Název nakladatele

Neuveden

Místo vydání

Lubljana Slovenia

Místo konání akce

Otočec Slovenia

Datum konání akce

19. 9. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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