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Kinematics and kinetics of alternating electric field induced liquid mass transport on chromium thin films

Ghosh, SN and Shastri, V and De Sarkar, D and Abraham, E and Talukder, S (2021) Kinematics and kinetics of alternating electric field induced liquid mass transport on chromium thin films. In: Nanotechnology, 32 (31).

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Official URL: https://doi.org/10.1088/1361-6528/abf779


Long range mass transport driven by an electric field has many applications in the fields of nanoscience and technology. Liquid-phase mass transport ranging from the micrometer to the millimeter scale and its application to nanopatterning have been demonstrated on chromium (Cr) thin films using a DC electric field. Under the influence of an electric field, the metal seems to undergo a chemical reaction, and the resulting liquid material flows out radially in all directions. In this study, we have explored the effect of an alternating (AC) electric field on this kind of liquid-phase material transport. Within the scope of this work, mass transport has been studied on Cr films 30 nm thick using an alternating square waveform with frequencies ranging from 100 Hz to 1000 Hz in steps of 50 Hz. The dependence of the material's formation, flow distance, and flow velocity on frequency, for a constant applied root mean square (RMS) voltage, was studied in detail. An analytical model is presented to explain the experimental results. This study, in particular the frequency parameter and the intermittent nature of the applied bias, will help us get a better control over the mass flow process, will lead to better resolutions for the electrolithography process.

Item Type: Journal Article
Publication: Nanotechnology
Publisher: IOP Publishing Ltd
Additional Information: The copyright for this article belongs to IOP Publishing Ltd .
Keywords: Chromium; Electric fields; Flow velocity; Liquids, Alternating electric field; Chromium thin films; Dc electric field; Electrolithography; Frequency parameters; ITS applications; Millimeter-scale; Nano science and technologies, Thin films
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 26 Nov 2023 09:58
Last Modified: 26 Nov 2023 09:58
URI: https://eprints.iisc.ac.in/id/eprint/82950

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