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Electrostatic Dispensing of Dry Dielectric Materials

Published online by Cambridge University Press:  17 March 2011

Malinda M. Tupper ,
Marjorie E. Chopinaud ,
Takamichi Ogawa  and
Michael J. Cima
Malinda M. Tupper
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Marjorie E. Chopinaud
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Takamichi Ogawa
Affiliation:
NGK Spark Plug Co., Ltd., Nagoya, Japan
Michael J. Cima
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
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Abstract

Dispensing micron-scale dielectric materials can be achieved through the use of dielectrophoresis. Electrodes are designed to create a nonuniform electric field. This method is expected to be applicable for transfer of a wide range of dielectric powders as well as small, shaped components. Small, 150 μm diameter silica spheres, as well as sodium fluorescein powder have been dispensed by this method. Selecting the appropriate electrode geometry and electric field intensity controls the amount collected. As little as 1.0 μg of sodium fluorescein powder, and as much as 16 mg of silica beads have been collected, and repeatability within 10 % of the total amount dispensed has been achieved.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 700: Symposium S – Combinatorial and Artificial Intelligence Methods in Materials Science , 2001 , S6.3
Copyright
Copyright © Materials Research Society 2002

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