Accession Number:

ADA523518

Title:

Dynamic Solidification in Nanoconfined Water Films

Descriptive Note:

Corporate Author:

WAYNE STATE UNIV DETROIT MI DEPT OF PHYSICS AND ASTRONOMY

Report Date:

2010-06-16

Pagination or Media Count:

11.0

Abstract:

The mechanical properties of nanoconfined water layers are still poorly understood and continue to create considerable controversy, despite their importance for biology and nanotechnology. Here, we report on dynamic nanomechanical measurements of water films compressed down to a few single molecular layers. We show that the mechanical properties of nanoconfined water layers change dramatically with their dynamic state. In particular, we observed a sharp transition from viscous to elastic response even at extremely slow compression rates, indicating that mechanical relaxation times increase dramatically once water is compressed to less than 3-4 molecular layers.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE