Electrostatic control of dewetting dynamics

Edwards, A.M.J. ORCID: 0000-0003-3338-1287, Ledesma-Aguilar, R., Newton, M.I. ORCID: 0000-0003-4231-1002, Brown, C.V. ORCID: 0000-0002-1559-3238 and McHale, G., 2020. Electrostatic control of dewetting dynamics. Applied Physics Letters, 116 (25): 253703. ISSN 0003-6951

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Abstract

The stability of liquid films on surfaces are critically important in microscale patterning and the semiconductor industry. If the film is sufficiently thin it may spontaneously dewet from the surface. The timescale and rate of dewetting depend on the film repellency of the surface and the properties of the liquid. Therefore, control over the repellency requires modifying surface chemistry and liquid properties to obtain the desired rate of film retraction. Here, we report how the dynamics of a receding thin liquid stripe to a spherical cap droplet can be controlled by programming surface repellency through a non-contact electrostatic method. We observe excellent agreement between the expected scaling of the dynamics for a wide range of voltage-selected final contact angles. Our results provide a method of controlling the dynamics of dewetting with high precision and locality relevant to printing and directed templating.

Item Type: Journal article
Publication Title: Applied Physics Letters
Creators: Edwards, A.M.J., Ledesma-Aguilar, R., Newton, M.I., Brown, C.V. and McHale, G.
Publisher: AIP Publishing
Date: 22 June 2020
Volume: 116
Number: 25
ISSN: 0003-6951
Identifiers:
NumberType
10.1063/5.0010443DOI
1331783Other
Rights: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in EDWARDS, A.M.J., LEDESMA-AGUILAR, R., NEWTON, M.I., BROWN, C.V. and MCHALE, G., 2020. Applied Physics Letters, 116 (25): 253703 and may be found at https://doi.org/10.1063/5.0010443.
Divisions: Schools > School of Science and Technology
Depositing User: Jill Tomkinson
Date Added: 29 Jun 2020 15:16
Last Modified: 29 Jun 2020 15:16
URI: http://irep.ntu.ac.uk/id/eprint/40132

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