Effect of substrate surface roughness on electric current induced flow of liquid metals

Talukder, Santanu and Somaiah, Nalla and Kumar, Praveen (2013) Effect of substrate surface roughness on electric current induced flow of liquid metals. In: APPLIED PHYSICS LETTERS, 102 (5).

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Abstract

Electric current can induce long-range flow of liquid metals over a conducting substrate. This work reports on the effect of the substrate surface roughness on the liquid metal-front velocity during such a flow. Experiments were conducted by passing electric current through liquid gallium placed over similar to 170 nm thick, 500 mu m wide gold and platinum films of varying roughness. The ensuing flow, thus, resembles micro-fluidics behavior in an open-channel. The liquid-front velocity decreased linearly with the substrate surface roughness; this is attributed to the reduction in the effective electric field along the liquid metal-substrate interface with the substrate surface roughness. (C) 2013 American Institute of Physics. http://dx.doi.org/10.1063/1.4790182]

Item Type:	Journal Article
Publication:	APPLIED PHYSICS LETTERS
Publisher:	AMER INST PHYSICS
Additional Information:	Copyright for this article belongs to AMER INST PHYSICS, USA
Department/Centre:	Division of Biological Sciences > Centre for Neuroscience Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	11 Mar 2013 11:28
Last Modified:	11 Mar 2013 11:28
URI:	http://eprints.iisc.ac.in/id/eprint/45992

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