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CHMELA, O. VALLEJOS VARGAS, S. HUBÁLEK, J.
Originální název
Chemoresistive micromachined gas sensors based on functionalized metal oxide nanowires: performance and reliability
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Chemoresistive micromachined gas sensors with bottom-electrode configuration and based on Pt-unctionalized tungsten oxide nanowires are fabricated. The performance and reliability of three types of devices with different electrode gap (5, 10 and 15 m) are analyzed in dry and humid ambient and towards various analytes (H2, NO2, EtOH, and CO). Results demonstrate an improved response, sensitivity, and stability with better dynamic of the response for the sensors with the electrode gap of 5 m, showing up to 7-fold higher responses and 32-fold faster responses towards hydrogen compared to the sensors with the electrode gap of 10 or 15 m. These results are connected with the increment of the density of nanowire junctions across the electrodes with 5 m gap; separation that corresponds to half of the length of the wires used in this work.
Klíčová slova
Micromachined gas sensor, nanowires, electrodes, optimization
Autoři
CHMELA, O.; VALLEJOS VARGAS, S.; HUBÁLEK, J.
Vydáno
1. 11. 2016
Nakladatel
ELSEVIER
ISSN
0925-4005
Periodikum
Sensors and Actuators B: Chemical
Číslo
235
Stát
Švýcarská konfederace
Strany od
525
Strany do
534
Strany počet
14
URL
http://dx.doi.org/10.1016/j.snb.2016.05.102
BibTex
@article{BUT127610, author="Ondřej {Chmela} and Stella {Vallejos Vargas} and Jaromír {Hubálek}", title="Chemoresistive micromachined gas sensors based on functionalized metal oxide nanowires: performance and reliability", journal="Sensors and Actuators B: Chemical", year="2016", number="235", pages="525--534", doi="10.1016/j.snb.2016.05.102", issn="0925-4005", url="http://dx.doi.org/10.1016/j.snb.2016.05.102" }