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Directed Self‐Assembly of Spherical Particles on Patterned Electrodes by an Applied Electric Field
Author(s) -
Winkleman A.,
Gates B. D.,
McCarty L. S.,
Whitesides G. M.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200401958
Subject(s) - materials science , spheres , electrode , electric field , self assembly , epoxy , polyurethane , microsphere , nanotechnology , composite material , chemical engineering , chemistry , physics , quantum mechanics , astronomy , engineering
Self‐assembly of 100 μm spheres on a patterned electrode under the influence of an applied electric field is demonstrated. This process occurs for ordered arrays and arbitrary patterns, over areas up to ∼0.7 cm 2 , with a defect rate (e.g., missing spheres or extra spheres, circled in Figure) of about 1 %. These arrays of microspheres can be transferred into polymeric matrices, such as poly(dimethylsiloxane), polyurethane, and epoxy.