Improvement of the sensitivity of chalcogenide-based infrared sensors dedicated to the in situ detection of organic molecules in aquatic environment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919347" target="_blank" >RIV/00216275:25310/22:39919347 - isvavai.cz</a>
Result on the web
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12139/1213919/Improvement-of-the-sensitivity-of-chalcogenide-based-infrared-sensors-dedicated/10.1117/12.2624451.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12139/1213919/Improvement-of-the-sensitivity-of-chalcogenide-based-infrared-sensors-dedicated/10.1117/12.2624451.short</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2624451" target="_blank" >10.1117/12.2624451</a>
Alternative languages
Result language
angličtina
Original language name
Improvement of the sensitivity of chalcogenide-based infrared sensors dedicated to the in situ detection of organic molecules in aquatic environment
Original language description
The aim of this study was to develop mid-infrared chalcogenide sensor and perform its functionalization by polymers in order to detect various hydrocarbon pollutants in water and to ensure an efficient attenuation of the water absorption bands. Selenide waveguides were fabricated by radiofrequency magnetron sputtering on silicon substrates using two different glass target compositions, for cladding and guiding layers. A hydrophobic polymer was deposited on the surface of zinc selenide prisms to allow its characterization by ATR-FTIR (Attenuated Total Reflectance-Fourier Transform InfraRed) spectroscopy. Benzene, toluene and ortho-, meta- and para-xylenes in solutions of distilled water at concentrations ranging from 10 ppb to 20 ppm were simultaneously detected and the measured limit of detection was determined to be equal to 250 ppb. However, the limit of detection must be improved to meet environmental standards. To achieve this goal, metallic nanostructures were deposited on the surface of the chalcogenide waveguides to increase the sensitivity of the future optical sensor thanks to the plasmon resonance phenomena. Thus, the fabrication of a heterostructure composed of gold nanoparticles deposited by electron beam evaporation was performed on a slab selenide waveguide in order to assess SEIRA (Surface-Enhanced InfraRed Absorption) effect.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA22-05179S" target="_blank" >GA22-05179S: Infrared photonics for chemical sensors: Materials strategy based on amorphous chalcogenides</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of SPIE, volume 12139
ISBN
978-1-5106-5154-8
ISSN
0277-786X
e-ISSN
1996-756X
Number of pages
7
Pages from-to
1213919
Publisher name
SPIE - The International Society for Optical Engineering
Place of publication
Bellingham
Event location
Strasbourg
Event date
Apr 3, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000838015500044