Observation of Femtosecond Acoustic Anomaly in a Solid Liquid Interface

Chi Kuang Sun, Yi Ting Yao, Chih Chiang Shen, Mu Han Ho, Tien Chang Lu, Jinn Kong Sheu

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)2987-2993
Number of pages7
JournalJournal of Physical Chemistry C
Volume124
Issue number5
DOIs
Publication statusPublished - 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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