Detail publikačního výsledku

Chemoresistive micromachined gas sensors based on functionalized metal oxide nanowires: performance and reliability

CHMELA, O.; VALLEJOS VARGAS, S.; HUBÁLEK, J.

Originální název

Chemoresistive micromachined gas sensors based on functionalized metal oxide nanowires: performance and reliability

Anglický název

Chemoresistive micromachined gas sensors based on functionalized metal oxide nanowires: performance and reliability

Druh

Článek WoS

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.

Anglický 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

Klíčová slova v angličtině

Micromachined gas sensor, nanowires, electrodes, optimization

Autoři

CHMELA, O.; VALLEJOS VARGAS, S.; HUBÁLEK, J.

Rok RIV

2017

Vydáno

01.11.2016

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",
  url="http://dx.doi.org/10.1016/j.snb.2016.05.102"
}