Browsing Waterloo Institute for Nanotechnology by Author "Ren, Carolyn L."
Now showing items 1-8 of 8
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Droplet formation in microfluidic T-junction generators operating in the transitional regime. I. Experimental observations
Glawdel, Tomasz; Elbuken, Caglar; Ren, Carolyn L. (American Physical Society Physics, 2012-01-26)This is the first part of a two-part study on the generation of droplets at a microfluidic T-junction operating in the transition regime where confinement of the droplet creates a large squeezing pressure that influences ... -
Droplet formation in microfluidic T-junction generators operating in the transitional regime. II. Modeling
Glawdel, Tomasz; Elbuken, Caglar; Ren, Carolyn L. (American Physical Society Physics, 2012-01-26)This is the second part of a two-part study on the generation of droplets at a microfluidic T-junction operating in the transition regime. In the preceding paper [Phys. Rev. E 85, 016322 (2012)], we presented our experimental ... -
Droplet formation in microfluidic T-junction generators operating in the transitional regime. III. Dynamic surfactant effects
Glawdel, Tomasz; Ren, Carolyn L. (American Physical Society Physics, 2012-08-13)This study extends our previous work on droplet generation in microfluidic T-junction generators to include dynamic interfacial tension effects created by the presence of surfactants. In Paper I [T. Glawdel, C. Elbuken, ... -
Hydrodynamic shrinkage of liquid CO2 Taylor drops in a straight microchannel
Qin, Ning; Wen, John Z.; Ren, Carolyn L. (IOP Publishing, 2018-02-12)Hydrodynamic shrinkage of liquid CO2 drops in water under a Taylor flow regime is studied using a straight microchannel (length/width similar to 100). A general form of a mathematical model of the solvent-side mass transfer ... -
Non-linear, non-monotonic effect of nano-scale roughness on particle deposition in absence of an energy barrier: Experiments and modeling
Jin, Chao; Glawdel, Tomasz; Ren, Carolyn L.; Emelko, Monica B. (Springer Nature, 2015-12-11)Deposition of colloidal- and nano-scale particles on surfaces is critical to numerous natural and engineered environmental, health, and industrial applications ranging from drinking water treatment to semi-conductor ... -
Numerical Study on Single Flowing Liquid and Supercritical CO2 Drop in Microchannel: Thin Film, Flow Fields, and Interfacial Profile
Qin, Ning; Feng, Yu; Wen, John Z.; Ren, Carolyn L. (MDPI, 2018-06-01)Taylor segments, as a common feature in two- or multi-phase microflows, are a strong flow pattern candidate for applications when enhanced heat or mass transfer is particularly considered. A thin film that separates these ... -
On nonequilibrium shrinkage of supercritical CO2 droplets in a water-carrier microflow
Qin, Ning; Wen, John Z.; Chen, Baixin; Ren, Carolyn L. (AIP Publishing, 2018-07-16)We report an experimental study on the hydrodynamic shrinkage of supercritical carbon dioxide (scCO(2)) microdroplets during a nonequilibrium process. After scCO(2 )microdroplets are generated by water shearing upon a ... -
Photocatalytic performances of ZnO nanoparticle film and vertically aligned nanorods in chamber-based microfluidic reactors: Reaction kinetics and flow effects
Zhao, Pei; Qin, Ning; Wen, John Z.; Ren, Carolyn L. (Elsevier BV, 2017-07-15)The nanoparticle seed layer (a film) and vertically aligned nanorods of zinc oxide (ZnO) with different lengths were fabricated within a novel chamber-based microfluidic (microchamber) reactor with a varying height of ...