Issue 20, 2016

Ultrasound-assisted recovery of free-standing high-aspect-ratio micropillars

Abstract

High-aspect-ratio polymer micropillar arrays are widely employed in microfluidics and microdevices. The collapse of polymer micropillars, however, would induce device degradation, which calls for a recovery method for the collapsed micropillars to restore their performances. In this communication, we propose a cost-effective and robust approach for recovery of free-standing high-aspect-ratio micropillars by ultrasonic-assisted technology. The collapsed micropillar array immersed in a low-surface-energy solution will recover its upright state by ultrasonic stimulation and keep standing steadily due to the low-surface-energy treatment. The collapsed micropillars treated by the proposed approach are entirely able to spring back to their original upright position.

Graphical abstract: Ultrasound-assisted recovery of free-standing high-aspect-ratio micropillars

Article information

Article type
Communication
Submitted
16 Dec 2015
Accepted
02 Feb 2016
First published
03 Feb 2016

RSC Adv., 2016,6, 16640-16644

Ultrasound-assisted recovery of free-standing high-aspect-ratio micropillars

H. Liu, B. Lei, W. Jiang, Y. Li, L. Yin, B. Chen and Y. Shi, RSC Adv., 2016, 6, 16640 DOI: 10.1039/C5RA26898B

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