期刊
NANOTECHNOLOGY
卷 33, 期 10, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6528/ac3d63
关键词
vapor; capillary condensation; nanoparticles; percolation theory; impedance
资金
- Funding of Leading Initiative for Excellent Young Researchers
- KAKENHI from Japan Society for the Promotion of Science (JSPS) [18KK0141]
This study observes a liquid-dependent impedance generated by vapor condensation and percolation in the void space between nanoparticles. The findings indicate that the condensation and percolation dynamics of vapor can be explained by classical percolation theory.
A liquid-dependent impedance is observed by vapor condensation and percolation in the void space between nanoparticles. Under the Laplace pressure, vapor is effectively condensed into liquid to fill the nanoscale voids in an as-deposited nanoparticle film. Specifically, the transient impedance of the nanoparticle film in organic vapor is dependent on the vapor pressure and the conductivity of the condensed liquid. The response follows a power law that can be explained by the classical percolation theory. The condensed vapor gradually percolates into the void space among nanoparticles. A schematic is proposed to describe the vapor condensation and percolation dynamics among the nanoparticles. These findings offer insights into the behavior of vapor adsorbates in nanomaterial assemblies that contain void space.
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