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Zinc oxide inverse opal enzymatic biosensor

Authors
You, XueqiuPikul, James H.King, William P.Pak, James J.
Issue Date
24-6월-2013
Publisher
AMER INST PHYSICS
Keywords
Zinc oxide; inverse opal; enzyme. biosensor
Citation
APPLIED PHYSICS LETTERS, v.102, no.25
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
102
Number
25
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/102941
DOI
10.1063/1.4811411
ISSN
0003-6951
Abstract
We report ZnO inverse opal- and nanowire (NW)-based enzymatic glucose biosensors with extended linear detection ranges. The ZnO inverse opal sensors have 0.01-18 mM linear detection range, which is 2.5 times greater than that of ZnO NW sensors and 1.5 times greater than that of other reported ZnO sensors. This larger range is because of reduced glucose diffusivity through the inverse opal geometry. The ZnO inverse opal sensors have an average sensitivity of 22.5 mu A/(mM cm(2)), which diminished by 10% after 35 days, are more stable than ZnO NW sensors whose sensitivity decreased by 10% after 7 days. (C) 2013 AIP Publishing LLC.
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