Kinetics of field-induced surface patterns on PMMA

Jyun Siang Peng, Fuqian Yang, Donyau Chiang, Sanboh Lee

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A simple model was developed to analyze the growth of a liquid pillar under the action of an electric field between two parallel electrodes. A quadratic relationship between time and the diameter of the pillar was obtained. The diameter of the pillar increases with time. Large electric field assists the growth of the liquid pillar, while a liquid with a large viscosity hinders the growth of the liquid pillar. The fieldinduced formation and growth of PMMA pillars on PMMA films were observed using the configuration of a parallel capacitor. Pillars of larger sizes and smaller densities were formed on thicker PMMA films than on thinner PMMA films. The root-mean-square (https://en.wikipedia.org/wiki/Root- mean-square) diameter of the pillars increases with the increase of the annealing time and annealing temperature. The growth behavior of the pillars can be described by an Arrhenius relation with an activation energy of 24.4 kJ/mol, suggesting that the growth of the pillars is controlled by a thermal activation process.

Original languageEnglish
Pages (from-to)4602-4609
Number of pages8
JournalLangmuir
Volume32
Issue number18
DOIs
StatePublished - May 10 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

Funding

This work was financially supported by the Ministry of Science and Technology, Taiwan.

FundersFunder number
Ministry of Science and Technology, Taiwan

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Spectroscopy
    • Electrochemistry

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