Liquid-body resonance while contacting a rotating superhydrophobic surface

Journal article


Chong, Matthew Lai Ho, Cheng, Michael, Katariya, Mayur, Muradoglu, Murat, Cheong, Brandon Huey-Ping, Zahidi, Alifa Afiah Ahmad, Yu, Yang, Liew, Oi Wah and Ng, Tuck Wah. (2015) Liquid-body resonance while contacting a rotating superhydrophobic surface. The European Physical Journal E. 38(119), pp. 1 - 9. https://doi.org/10.1140/epje/i2015-15119-y
AuthorsChong, Matthew Lai Ho, Cheng, Michael, Katariya, Mayur, Muradoglu, Murat, Cheong, Brandon Huey-Ping, Zahidi, Alifa Afiah Ahmad, Yu, Yang, Liew, Oi Wah and Ng, Tuck Wah
Abstract

We advance a scheme in which a liquid body on a stationary tip in contact with a rotating superhydrophobic surface is able to maintain resonance primarily from stick-slip events. With tip-to-surface spacing in the range 2.73≤h < 2.452.73≤h < 2.45 mm for a volume of 10 μL, the liquid body was found to exhibit resonance independent of the speed of the drum. The mechanics were found to be due to a surface-tension-controlled vibration mode based on the natural frequency values determined. With spacing in the range 2.45≤h < 2.152.45≤h < 2.15 mm imposed for a volume of 10 μL, the contact length of the liquid body was found to vary with rotation of the SH drum. This was due to the stick-slip events being able to generate higher energy fluctuations causing the liquid-solid contact areas to vary since the almost oblate spheroid shape of the liquid body had intrinsically higher surface energies. This resulted in the natural frequency perturbations being frequency- and amplitude-modulated over a lower frequency carrier. These findings have positive implications for microfluidic sensing.

Year2015
JournalThe European Physical Journal E
Journal citation38 (119), pp. 1 - 9
PublisherSpringer New York LLC
ISSN1292-8941
Digital Object Identifier (DOI)https://doi.org/10.1140/epje/i2015-15119-y
Scopus EID2-s2.0-84947447465
Page range1 - 9
Research GroupSchool of Behavioural and Health Sciences
Publisher's version
File Access Level
Controlled
Grant IDARC/DP120100583
Place of publicationUnited States of America
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