Ultra-low-powered aqueous shear stress sensors based on bulk EG-CNTs integrated in microfluidic systems

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

  • Yanli Qu
  • Winnie W. Y. Chow
  • Mengxing Ouyang
  • Steve C. H. Tung
  • Xuliang Han

Detail(s)

Original languageEnglish
Article number4563668
Pages (from-to)565-572
Journal / PublicationIEEE Transactions on Nanotechnology
Volume7
Issue number5
Publication statusPublished - Sep 2008
Externally publishedYes

Abstract

Novel aqueous shear stress sensors based on bulk carbon nanotubes (CNTs) were developed by utilizing microelectricalmechanical system (MEMS) compatible fabrication technology. The sensors were fabricated on glass substrates by batch assembling electronics-grade CNTs (EG-CNTs) as sensing elements between microelectrode pairs using dielectrophoretic technique. Then, the CNT sensors were permanently integrated in glass-polydimethylsiloxane (PDMS) microfluidic channels by using standard glass-PDMS bonding process. Upon exposure to deionized (DI) water flow in the microchannel, the characteristics of the CNT sensors were investigated at room temperature under constant current (CC) mode. The specific electrical responses of the CNT sensors at different currents have been measured. It was found that the electrical resistance of the CNT sensors increased noticeably in response to the introduction of fluid shear stress when low activation current (

Research Area(s)

  • Aqueous shear stress sensors, Carbon nanotubes (CNT), CNT sensors, Microfluidic system, Ultra-low-powered sensors

Citation Format(s)

Ultra-low-powered aqueous shear stress sensors based on bulk EG-CNTs integrated in microfluidic systems. / Qu, Yanli; Chow, Winnie W. Y.; Ouyang, Mengxing; Tung, Steve C. H.; Li, Wen J.; Han, Xuliang.

In: IEEE Transactions on Nanotechnology, Vol. 7, No. 5, 4563668, 09.2008, p. 565-572.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review