Three-dimensional arrangements of polystyrene latex particles with a hyperbolic quadruple electrode system.
An attempt was made to arrange polystyrene latex particles (2, 5, and 10 microm in diameter) dispersed in aqueous media making use of their dielectrophoresis and electrophoresis with a hyperbolic quadruple electrode system. Application of a high-frequency ac field enabled the particles to arrange themselves between the electrodes forming a particle monolayer due to the negative dielectrophoretic force. Simultaneous application of high-frequency ac and dc fields caused the particles to gather in the region surrounded by the electrodes to form particle multilayers. Appropriate choice of the way of applying an electric field thus allowed the reversible control of particle arrangements (monolayer, multilayer, dispersion). Reapplication of an ac field to the particle layers produced highly dense particle multilayers.
Abe
Masahiko
M
Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. abemasa@rs.noda.tus.ac.jp
Orita
Masanori
M
Yamazaki
Hiroyuki
H
Tsukamoto
Shinya
S
Teshima
Yuki
Y
Sakai
Toshio
T
Ohkubo
Takahiro
T
Momozawa
Nobuyuki
N
Sakai
Hideki
H