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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

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

Name of the periodical

Microchimica Acta

ISSN

0026-3672

e-ISSN

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Volume of the periodical

181

Issue of the periodical within the volume

15-16

Country of publishing house

AT - AUSTRIA

Number of pages

6

Pages from-to

1857-1862

UT code for WoS article

000344001200011

EID of the result in the Scopus database

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