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Combined Optical and Chemical Control of a Microsized Photofueled Janus Particle
Author(s) -
Simoncelli Sabrina,
Summer Johannes,
Nedev Spas,
Kühler Paul,
Feldmann Jochen
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201503712
Subject(s) - janus , janus particles , nanotechnology , materials science , particle (ecology) , oceanography , geology
A Au–silica Janus particle is elevated along the laser beam axis in an optical trap. The propulsion mechanism is based on the local temperature gradient created around the particle due to the photothermal conversion of the gold‐coated hemisphere. The height of the particle and its motion‐direction are tuned by the nature and the concentration of the electrolytes in the medium.