2D monocrystalline nanostructures of cobalt oxide Co3O4 for sensing individual molecules

Olga E. Glukhova; Michael M. Slepchenkov; Dmitriy A. Kolosov

doi:10.1117/12.2546528

21 February 2020 2D monocrystalline nanostructures of cobalt oxide Co₃O₄ for sensing individual molecules

Olga E. Glukhova, Michael M. Slepchenkov, Dmitriy A. Kolosov

Proceedings Volume 11256, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications XII; 112560P (2020) https://doi.org/10.1117/12.2546528
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

In this work, the sensory properties of a thin film of a Co₃O₄ monocrystal 0.5 nm in thick with a (111) plane are studied on the example of alcohol molecules of methanol, ethanol, propanol, and butanol. The regularities in the interaction of alcohol molecules with film surface are investigated. The energy profiles of interaction are calculated and the values of activation energy are determined. It is established that the value of activation energy is determined by the weight of the adsorbed molecule and its configuration relative to the surface of cobalt oxide. The regularity of the change in the electrical resistance of the Co₃O₄ film during the adsorption of various alcohol molecules was revealed. It is found that the monocrystalline nanostructure of cobalt oxide Co₃O₄ is very promising as a sensory surface, which makes it possible to register individual molecules.

Citation Download Citation

Olga E. Glukhova, Michael M. Slepchenkov, and Dmitriy A. Kolosov "2D monocrystalline nanostructures of cobalt oxide Co₃O₄ for sensing individual molecules", Proc. SPIE 11256, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications XII, 112560P (21 February 2020); https://doi.org/10.1117/12.2546528

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KEYWORDS

Cobalt

Molecules

Oxides

Crystals

Molecular interactions

Resistance

Chemical species

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