UV-activated ZnO films on a flexible substrate for room temperature O₂ and H₂O sensing.

ABSTRACT: We demonstrate that UV-light activation of polycrystalline ZnO films on flexible polyimide (Kapton) substrates can be used to detect and differentiate between environmental changes in oxygen and water vapor. The in-plane resistive and impedance properties of ZnO films, fabricated from bacteria-derived ZnS nanoparticles, exhibit unique resistive and capacitive responses to changes in O₂ and H₂O. We propose that the distinctive responses to O₂ and H₂O adsorption on ZnO could be utilized to statistically discriminate between the two analytes. Molecular dynamic simulations (MD) of O₂ and H₂O adsorption energy on ZnO surfaces were performed using the large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) with a reacti

SUBMITTER: Jacobs CB 

PROVIDER: S-EPMC5519692 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature