Dynamic Solidification in Nanoconfined Water Films

Details Dynamic Solidification in Nanoconfined Water Films Dynamic Solidification in Nanoconfined Water Films

2010-06-16

arxiv.org/abs/1006.3320v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

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.

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