Switching adhesion and friction by light using photosensitive guest - host interactions

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Date
2015
Authors
Blass, Johanna
Bozna, Bianca
Albrecht, Marcel
Krings, Jennifer A.
Ravoo, Bart Jan
Wenz, Gerhard
Bennewitz, Roland
Volume
51
Issue
10
Journal
Chemical Communications
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Publisher
Cambridge : Royal Society of Chemistry
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Abstract

Friction and adhesion between two β-cyclodextrin functionalized surfaces can be switched reversibly by external light stimuli. The interaction between the cyclodextrin molecules attached to the tip of an atomic force microscope and a silicon wafer surface is mediated by complexation of ditopic azobenzene guest molecules. At the single molecule level, the rupture force of an individual complex is 61 ± 10 pN.

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CC BY-NC-SA 3.0 Unported