Dielectrophoretic assembly of oriented and switchable two-dimensional photonic crystals

Simon O. Lumsdon; Eric W. Kaler; Jacob P. Williams; Orlin D. Velev

doi:10.1063/1.1541114

Dielectrophoretic assembly of oriented and switchable two-dimensional photonic crystals

Simon O. Lumsdon, Eric W. Kaler, Jacob P. Williams, Orlin D. Velev

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Abstract

The assembly of one- and two-dimensional crystals from suspensions of latex or silica microspheres subjected to an alternating electric field in a gap between planar electrodes on a surface is discussed. These crystals having areas above 25 mm² are oriented without the need for micropatterned templates. The particles are accumulated on the surface between the electrodes due to the field gradients, align into rows along the field direction and are crystallized into hexagonal arrays. The electrostatic repulsion is used to control the lattice spacings.

Original language	English (US)
Pages (from-to)	949-951
Number of pages	3
Journal	Applied Physics Letters
Volume	82
Issue number	6
DOIs	https://doi.org/10.1063/1.1541114
State	Published - Feb 10 2003

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AU - Williams, Jacob P.

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Dielectrophoretic assembly of oriented and switchable two-dimensional photonic crystals

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