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Electrostatic Self‐Assembly of Polystyrene Microspheres by Using Chemically Directed Contact Electrification
Author(s) -
McCarty Logan S.,
Winkleman Adam,
Whitesides George M.
Publication year - 2006
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.200602914
Subject(s) - polystyrene , contact electrification , microsphere , materials science , bead , nanotechnology , chemical engineering , triboelectric effect , composite material , polymer , engineering
Stick with me : Electrostatic charges can be induced in functionalized polystyrene beads. Oppositely charged beads then aggregate to form superstructures. A coat of small beads can self‐assemble around a large bead (see optical microscopy image). After annealing, another layer of beads can be added. The technique, based on contact electrification, avoids the use of expensive equipment and enables the use of large quantities of material.