Terahertz split-ring metamaterials as transducers for chemical sensors based on conducting polymers: a feasibility study with sensing of acidic and basic gases using polyaniline chemosensitive layer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43897272" target="_blank" >RIV/60461373:22340/14:43897272 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00604-014-1263-0" target="_blank" >http://dx.doi.org/10.1007/s00604-014-1263-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00604-014-1263-0" target="_blank" >10.1007/s00604-014-1263-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Terahertz split-ring metamaterials as transducers for chemical sensors based on conducting polymers: a feasibility study with sensing of acidic and basic gases using polyaniline chemosensitive layer

Popis výsledku v původním jazyce

We report on the first application of terahertz metamaterials acting as transducers for chemical sensors based on conducting polymers. In our feasibility study aimed at sensing of gaseous hydrochloric and ammonia, a two-dimensional sensor metamaterial consisting of an array of split-ring resonators on the surface of undoped silicon wafer was prepared. The surface of the resonator was coated with a 150-mu m layer of polyaniline. Binding of hydrogen chloride to polyaniline leads to distinct changes in theresonance frequency of the metamaterial. Measurements can be performed both in the reflection and transmission mode. A numerical simulation of the response revealed an increase of both the real and the imaginary components of the dielectric function ofthe polyaniline film. These changes are attributed to the transition from emaraldine base to emeraldine salt. The results demonstrate a new approach for formation of highly sensitive transducers for chemical sensors.

Název v anglickém jazyce

Terahertz split-ring metamaterials as transducers for chemical sensors based on conducting polymers: a feasibility study with sensing of acidic and basic gases using polyaniline chemosensitive layer

Popis výsledku anglicky

We report on the first application of terahertz metamaterials acting as transducers for chemical sensors based on conducting polymers. In our feasibility study aimed at sensing of gaseous hydrochloric and ammonia, a two-dimensional sensor metamaterial consisting of an array of split-ring resonators on the surface of undoped silicon wafer was prepared. The surface of the resonator was coated with a 150-mu m layer of polyaniline. Binding of hydrogen chloride to polyaniline leads to distinct changes in theresonance frequency of the metamaterial. Measurements can be performed both in the reflection and transmission mode. A numerical simulation of the response revealed an increase of both the real and the imaginary components of the dielectric function ofthe polyaniline film. These changes are attributed to the transition from emaraldine base to emeraldine salt. The results demonstrate a new approach for formation of highly sensitive transducers for chemical sensors.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Microchimica Acta

ISSN

0026-3672

e-ISSN

—

Svazek periodika

181

Číslo periodika v rámci svazku

15-16

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

6

Strana od-do

1857-1862

Kód UT WoS článku

000344001200011

EID výsledku v databázi Scopus

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