Browsing Mechanical and Mechatronics Engineering by Author "Peng, Ran"
Now showing items 1-7 of 7
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Effects of ionic concentration gradient on electroosmotic flow mixing in a microchannel
Peng, Ran; Li, Dongqing (Elsevier, 2014-11-08)Effects of ionic concentration gradient on electroosmotic flow (EOF) mixing of one stream of a high concentration electrolyte solution with a stream of a low concentration electrolyte solution in a microchannel are ... -
Electrokinetic motion of single nanoparticles in single PDMS nanochannels
Peng, Ran; Li, Dongqing (Springer, 2017-01)Electrokinetic motion of single nanoparticles in single nanochannels was studied systematically by image tracking method. A novel method to fabricate PDMS-glass micro/nanochannel chips with single nanochannels was presented. ... -
Electrokinetic Transport Phenomena in Nanochannels and Applications of Nanochannel-based Devices in Nanoparticle Detection and Molecule Sensing
Peng, Ran (University of Waterloo, 2018-04-12)Nanofluidics investigates transport phenomena, manipulation, and control of fluids and nano-sized objects in fluidic channels with an at least one-dimensional size smaller than 100 nm. At the nanoscale, fluids and objects ... -
Electroosmotic flow in single PDMS nanochannels
Peng, Ran; Li, Dongqing (Royal Society of Chemistry, 2016-05-23)The electroosmotic flow (EOF) velocity in single PDMS nanochannels with dimensions as small as 20 nm is investigated systematically by the current slope method in this paper. A novel method for the fabrication of single ... -
Fabrication of nanochannels on polystyrene surfaces
Peng, Ran; Li, Dongqing (Biomicrofluidics, 2015-05)Solvent-induced nanocrack formation on polystyrene surface is investigated experimentally. Solubility parameter and diffusion coefficient of alcohols are employed to elucidate the swelling and cracking processes as well ... -
Fabrication of polydimethylsiloxane (PDMS) nanofluidic chips with controllable channel size and spacing
Peng, Ran; Li, Dongqing (Royal Society of Chemistry, 2016-08-09)The ability to create reproducible and inexpensive nanofluidic chips is essential to the fundamental research and applications of nanofluidics. This paper presents a novel and cost-effective method for fabricating a single ... -
Separation of nanoparticles by a nano-orifice based DC-dielectrophoresis method in a pressure-driven flow
Zhao, Kai; Peng, Ran; Li, Dongqing (Royal Society of Chemistry, 2016-10-07)A novel DC-dielectrophoresis (DEP) method employing a pressure-driven flow for the continuous separation of micro/nano-particles is presented in this paper. To generate the DEP force, a small voltage difference is applied ...