Schottky-Gated Probe-Free ZnO Nanowire Biosensor

Ping-Hung Yeh, Zhou Li, Zhong Lin Wang

Research output: Contribution to journalArticlepeer-review

221 Scopus citations


(Figure Presented) A nanowire-based nanosensor for detecting biologically and chemically charged molecules that is probe-free and highly sensitive is demonstrated. The device relies on the nonsymmetrical Schottky contact under reverse bias (see figure) and is much more sensitive than the device based on the symmetric ohmic contact. This approach serves as a guideline for designing more practical chemical and biochemical sensors. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish (US)
Pages (from-to)4975-4978
Number of pages4
JournalAdvanced Materials
Issue number48
StatePublished - Sep 17 2009
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: P.-H.Y. and Z.L. contributed equally to this work. This research was supported by DARPA (Army/AMCOM/REDSTONE AR, W31P4Q-081-0009), BES DOE (DE-FG02-07ER46394), the Air Force Office (FA9550-08-1-0446), DARPA/ARO W911NF-08-1-0249, the KAUST Global Research Partnership, and NSF (DMS 0706436, CMMI 0403671). Z.L. is grateful for the partial fellowship support from the China Scholarship Council (CSC) (No. 20073020). The authors thank Su Zhang and Fengru Fan for their assistant with the microfluidics.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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