10.1021/nn4027245.s001
Wooree Ko
Wooree
Ko
Namchul Jung
Namchul
Jung
Moonchan Lee
Moonchan
Lee
Minhyuk Yun
Minhyuk
Yun
Sangmin Jeon
Sangmin
Jeon
Electronic Nose Based on Multipatterns of ZnO Nanorods on a Quartz Resonator with Remote Electrodes
American Chemical Society
2013
ZnO nanorods
Remote ElectrodesAn electrodeless
electrodeless quartz crystal plate
quartz crystal microbalance
electrodeless QCM configuration
QF
ZnO nanorod patterns
ZnO nanorods 5 μ m
MQCM
2013-08-27 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Electronic_Nose_Based_on_Multipatterns_of_ZnO_Nanorods_on_a_Quartz_Resonator_with_Remote_Electrodes/2383639
An electrodeless monolithic multichannel quartz crystal microbalance (MQCM) sensor was developed <i>via</i> the direct growth of ZnO nanorod patterns of various sizes onto an electrodeless quartz crystal plate. The patterned ZnO nanorods acted as independent resonators with different frequencies upon exposure to an electric field. The added mass of ZnO nanostructures was found to significantly enhance the quality factor (QF) of the resonator in electrodeless QCM configuration. The QF increased with the length of the ZnO nanorods; ZnO nanorods 5 μm in length yielded a 7-fold higher QF compared to the QF of a quartz plate without ZnO nanorods. In addition, the ZnO nanorods offered enhanced sensitivity due to the enlarged sensing area. The developed sensor was used as an electronic nose for detection of vapor mixtures with impurities.