Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 68: Hydrogels and Microgels II
CPP 68.1: Vortrag
Freitag, 24. März 2017, 10:15–10:30, ZEU 260
Modelling photothermal control of gold nanoparticle loaded microgel systems — •Dmitry Chigrin1,2, Gero von Plessen1, Ahmed Mourran2, and Martin Möller2,3 — 1Institute of Physics (1A), RWTH Aachen University, Aachen, Germany — 2DWI - Leibniz Institute for Interactive Materials, and Functional Interactive Polymers, Aachen, Germany — 3Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
Temperature-responsive microgels can exhibit extremely large deformations due to the volume transition in response to changes in temperature. Combining photothermal materials, e.g. plasmonic nanoparticles, with microgels opens a unique opportunity to design micro-dynamical systems (microswimmers, microactuators, micromachines) which can be controlled all-optically. In this presentation we discuss physical modelling of gold nanoparticle loaded microgels. A description of photothermally activated microgels involves self-consistent coupling of diffusion, elasticity, heat transfer and electrodynamic models. Using simple examples we discuss how swelling/de-swelling dynamics of microgels can be controlled and guided using light.