AI Article Synopsis
- Researchers studied how aging affects ultrathin films of poly(2-chlorostyrene) (P2CS) that are less than 10 nm thick using dielectric relaxation spectroscopy.
- For films with a thickness of 3.7 nm, the imaginary part of the dielectric susceptibility (ϵ″) increased over time during isothermal aging, unlike thicker films (over 9.0 nm).
- This increase in ϵ″ for the ultrathin films is linked to the existence of a mobile liquid-like layer within them.
Article Abstract
The aging dynamics of poly(2-chlorostyrene) (P2CS) ultrathin films with thicknesses less than 10 nm were investigated using dielectric relaxation spectroscopy. The imaginary part of the dielectric susceptibility ϵ″ for P2CS ultrathin films with a thickness of 3.7 nm increased with an increase in isothermal aging time, while this was not the case for P2CS thin films thicker than 9.0 nm. This anomalous increase in ϵ″ for the ultrathin films is strongly correlated with the presence of a mobile liquidlike layer within the thin films.
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| http://dx.doi.org/10.1103/PhysRevE.82.051801 | DOI Listing |
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