Experimental study of a liquid fluidization in a microfluidic channel


  • The article was originally published as an R&D Note on November 30, 2012, but was subsequently reformatted as an AIChE Letter and reposted on January 3, 2013.

Correspondence concerning this article should be addressed to V. Zivkovic at vladimir.zivkovic@adelaide.edu.au (or) M. J. Biggs at mark.biggs@adelaide.edu.au.


This study reports the first ever experimental study of true micro-fluidization: a liquid-fluidized bed of 30.5 μm micro-particles within a rectangular micro-channel of 400 × 175 μm2. The failure to fluidize the micro-particles with water demonstrated the importance of surface forces for micro-fluidization. Use of ethanol instead leads to fluidization that is largely well described by conventional fluidization equations, although higher values of empirical constant (k and n) are obtained for Richardson-Zaki correlation.