Thursday, September 25, 2014

Does rotational melting make molecular crystal surfaces more slippery?




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04641B, Paper

Andrea Benassi, Andrea Vanossi, Carlo A. Pignedoli, Daniele Passerone, Erio Tosatti

The surface of a crystal made of roughly spherical molecules exposes, above its bulk rotational phase transition at T = Tr , a carpet of freely rotating molecules, possibly functioning as "nanobearings" in sliding friction.

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