Abstract
Here we report a femtosecond anomaly observed at a solid-liquid interface: femtosecond acoustic echo being advanced by the application of a viscous liquid to the solid surface. Through extensive simulation and experiments, we attribute this new discovery to the effect introduced by the surface-adsorbed water layer, switching between properties more viscous than water and more solid-like than ice. Our study further indicates a new technology paradigm: the femtosecond acoustic system to probe the viscoelastic properties of the surface-adsorbed water layer, which is not achievable by any available current technology.
| Original language | English |
|---|---|
| Pages (from-to) | 2987-2993 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry C |
| Volume | 124 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2020 Feb 6 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
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Cite this
Sun, C. K., Yao, Y. T., Shen, C. C., Ho, M. H., Lu, T. C., & Sheu, J. K. (2020). Observation of Femtosecond Acoustic Anomaly in a Solid Liquid Interface. Journal of Physical Chemistry C, 124(5), 2987-2993. https://doi.org/10.1021/acs.jpcc.9b09359