Zinc oxide inverse opal enzymatic biosensor

Xueqiu You, James H. Pikul, William P. King, James J. Pak

Research output: Contribution to journalArticle

22 Citations (Scopus)

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 μA/(mM cm2), which diminished by 10% after 35 days, are more stable than ZnO NW sensors whose sensitivity decreased by 10% after 7 days.

Original languageEnglish
Article number253103
JournalApplied Physics Letters
Volume102
Issue number25
DOIs
Publication statusPublished - 2013 Jun 24

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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