<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

Browsing by Author "Yao, Yi-Ting"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item type:Item,
    Observation of Femtosecond Acoustic Anomaly in a Solid Liquid Interface
    (2020-02-06)
    Sun, Chi-Kuang
    ;
    Yao, Yi-Ting
    ;
    Shen, Chih-Chiang
    ;
    Ho, Mu-Han
    ;
    Lu, Tien-Chang
    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.