TY - JOUR
T1 - Influence of water vapor on CO detection using a resonant microcantilever functionalized by Al-doped ZnO nanorods
AU - Aprilia, Lia
AU - Hosoda, Makoto
AU - Nuryadi, Ratno
AU - Neo, Yoichiro
AU - Barique, Mohamad Abdul
AU - Udhiarto, Arief
AU - Hartanto, Djoko
AU - Mimura, Hidenori
N1 - Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - A microcantilever (MC) coated by Al-doped ZnO nanorods (AZNRs) was used for carbon monoxide (CO) detection at ambient temperature. Very high sensitivity (on the order of femtograms) was obtained, which is caused by the intense adsorption of CO molecules on the AZNR surface. After the samples had been prepared and characterized, the effects of the presence of water vapor on the CO detection were investigated. Although no response was obtained for AZNRs without the presence of water vapor (i.e. under a vacuum), high sensitivity was observed in the presence of water vapor (finite humidity). Regarding the above phenomena, we propose a model that is a replacement process of the water vapor molecules by the CO molecules on the AZNR surface and discuss it in detail.
AB - A microcantilever (MC) coated by Al-doped ZnO nanorods (AZNRs) was used for carbon monoxide (CO) detection at ambient temperature. Very high sensitivity (on the order of femtograms) was obtained, which is caused by the intense adsorption of CO molecules on the AZNR surface. After the samples had been prepared and characterized, the effects of the presence of water vapor on the CO detection were investigated. Although no response was obtained for AZNRs without the presence of water vapor (i.e. under a vacuum), high sensitivity was observed in the presence of water vapor (finite humidity). Regarding the above phenomena, we propose a model that is a replacement process of the water vapor molecules by the CO molecules on the AZNR surface and discuss it in detail.
UR - http://www.scopus.com/inward/record.url?scp=85065182142&partnerID=8YFLogxK
U2 - 10.7567/1347-4065/ab02e4
DO - 10.7567/1347-4065/ab02e4
M3 - Article
AN - SCOPUS:85065182142
SN - 0021-4922
VL - 58
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
M1 - SBBH09
ER -