期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 42, 期 22, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/42/22/225505
关键词
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资金
- Office of Inertial Confinement Fusion of the Department of Energy [DEFC52- 08NA28302]
- Laboratory for Laser Energetics at the University of Rochester
- New York State Energy Research and Development Authority
- Eastman Kodak Company
The ponderomotive force, exerted upon all dielectric liquids by a non-uniform electric field, can be used for the remote, voltage-controlled manipulation of 10 to 100 mu L volumes of cryogenic liquids. This liquid dielectrophoretic (DEP) effect, imposed by specially designed electrodes, combines with capillarity to influence the hydrostatic equilibria of liquid deuterium. A simple, one-dimensional model accurately predicts the measured meniscus rise of D(2) against gravity for sufficiently wide, parallel electrodes. For narrow electrodes, where the sidewalls influence the equilibrium, a finite element solution using the Surface Evolver software correctly describes the shape of the meniscus. A bifurcation phenomenon previously observed for room temperature dielectrics is also observed in liquid deuterium. Cryo-DEP actuation has potential applications ranging from metering precise volumes of liquid deuterium for laser target fuelling to manipulation of liquid nitrogen for cryo-preservation of biological samples.
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