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Schooling Behavior of Light‐Powered Autonomous Micromotors in Water
Author(s) -
Ibele Michael,
Mallouk Thomas E.,
Sen Ayusman
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200804704
Subject(s) - micrometer , silver chloride , particle (ecology) , chloride , chemistry , nanotechnology , chemical engineering , materials science , optics , physics , ecology , biology , organic chemistry , engineering , electrode
A new school of thought : Micrometer‐sized silver chloride (AgCl) particles (red) in deionized water move under UV illumination by self‐diffusiophoresis (see picture). Each AgCl particle secretes ions to which the other particles respond, and they are observed to “school” into regions with higher concentrations of particles. Photo‐inactive silica particles (blue) also respond to the chemical secretion by swimming towards and surrounding individual AgCl particles.