Effect of surface temperature on microparticle-surface adhesion

Chaitanya Krishna Prasad Vallabh, James D. Stephens, Cetin Cetinkaya

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3 Scopus citations

Abstract

The effect of surface temperature on the adhesion properties of the bond between a substrate and a single micro-particle is investigated in a non-contact/non-invasive manner by monitoring the rolling/rocking motion dynamics of acoustically excited single microparticles. In the current work, a set of experiments were performed to observe the change in the rocking resonance frequency of the particles with the change of surface temperature. At various substrate surface temperature levels, the work-of-adhesion values of the surface-particle bond are evaluated from the resonance frequencies of the rocking motion of a set of microparticles driven by an orthogonal ultrasonic surface acoustic wave field. The dependence of adhesion bonds of a microparticle and the substrate on the surface temperature has been clearly demonstrated by the performed experiments. It was also observed and noted that the relative humidity plays a vital role in the rolling behavior of particles.

Original languageEnglish
Article number041607
JournalApplied Physics Letters
Volume107
Issue number4
DOIs
StatePublished - 27 Jul 2015

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