| Literature DB >> 28666106 |
Iren E Kuznetsova1, Vladimir I Anisimkin2, Sergei P Gubin3, Sergei V Tkachev4, Vladimir V Kolesov2, Vadim V Kashin2, Boris D Zaitsev5, Alexander M Shikhabudinov6, Enrico Verona7, Shaorong Sun8.
Abstract
The changes of density and elastic modules due to water vapor adsorption are measured for graphene oxide film at room temperature. Dominant mechanism for acoustic wave humidity sensing by the film is shown to be related with variation of its electric conductivity. Basing on the data, super high sensitive humidity sensor employing high-order Lamb wave with large coupling constant, standard lithium niobate plate, and graphene oxide sorbent film is developed. The minimal detectable level of the sensor is as low 0.03% RH, response times are 60/120s, and reproducibility is ±2.5%. The sensor is completely selective towards H2, CO, CH4, NO, O2.Entities:
Year: 2017 PMID： 28666106 DOI： 10.1016/j.ultras.2017.06.019
Source DB: PubMed Journal: Ultrasonics ISSN： 0041-624X Impact factor: 2.890