Electrohydrodynamical study of the instability of a thin liquid metal film: Application to planar liquid metal ion sources

Journal Article · Fri Feb 15 04:00:00 EST 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.348767· OSTI ID:5866500

Miskovsky, N M; He, J; Cutler, P H; Chung, M ^[1]

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1. Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802 (US)

Liquid metal ion sources are of interest in diverse areas of technology since they provide a high brightness, quasipoint source of ions and droplets for microfabrication, surface analysis, ultrathin film deposition, and other potential applications. N. M. Miskovsky, M. Chung, P. H. Cutler, T. E. Feuchtwang, and E. Kazes (J. Vac. Sci. Technol. A {bold 6}, 2992 (1988)) have developed an electrohydrodynamic capillary wave theory for ion and droplet emission in electrically stressed conducting viscous fluids based on a mathematical formalism introduced by J. R. Melcher and C. V. Smith (Phys. Fluids {bold 12}, 778 (1969)) and S. Grossmann and A. Muller (Z. Phys. B {bold 57}, 161 (1984)). As the simplest analytical application of this theory they chose a model consisting of a planar fluid of thickness {ital a}'' supported on a rigid electrode. A parallel planar counter electrode is at a distance {ital b}'' from the unperturbed surface. The Navier--Stokes equation was solved subject to a dynamical Laplace--Young stress boundary condition (which includes the frictional tensor) to obtain the dispersion relation used to investigate the stability of the system.

• OSTI ID: 5866500
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:4; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

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