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DY: Fachverband Dynamik und Statistische Physik

DY 13: Crystallization, Nucleation and Self Assembly II (joint session CPP/ DY)

DY 13.2: Talk

Monday, March 16, 2015, 16:00–16:15, PC 203

Nano-Dewetting in Colloidal Crystal Drying — •Mulda Muldarisnur and Frank Marlow — MPI für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany

The drying of colloidal crystals is connected with a continuous shrinkage process [1]. However, several minutes after starting the drying, the system seems to take a breath before it shrinks monotonously until its final state after about one day. This short period we call "v"-event because of the shape of the curve characterizing the lattice constant: a decrease followed by a counter-intuitive increase which ends after one hour. This event is found in time-dependent optical spectra. It is assigned to the start of a nano-dewetting process occurring at the colloidal particles.

[1] M. Muldarisnur and F. Marlow, Observation of Nano-Dewetting in Colloidal Crystal Drying, Angew. Chem. Int. Ed. 2014, 53 (33), pages 8761-8764