A model for electromigration induced flow in liquid metals

Kumar, Sumit and Kumar, Praveen and Pratap, Rudra (2017) A model for electromigration induced flow in liquid metals. In: JOURNAL OF PHYSICS D-APPLIED PHYSICS, 50 (39).

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Abstract

Electromigration in liquid metals can be used for mass transport over a considerable length with micro- and nano-scale flow features. Exploitation of this phenomenon, however, requires a sound understanding of the liquid metal flow under an applied electric field. Depending on the sign of the effective charge number, Z*, liquid metals flow along a set direction under the applied electric field. A few liquid metals, e.g. Ga, Sn, etc, flow in the direction of the electric field, while a few others, e.g. Pb, flow in the opposite direction. Here, we propose a new model for predicting the direction of the aforementioned flow for a given liquid metal. Our model incorporates Lennard-Jones potential into the cell model of liquids in order to calculate the value of Z* as a function of temperature. We then carry out experiments on a few metals to validate the model and show that it indeed correctly predicts the ensuing flow.

Item Type:	Journal Article
Publication:	JOURNAL OF PHYSICS D-APPLIED PHYSICS
Additional Information:	Copy right for this article belongs to the IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	23 Sep 2017 05:13
Last Modified:	23 Sep 2017 05:13
URI:	http://eprints.iisc.ac.in/id/eprint/57847

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