Browsing Engineering (Faculty of) by Author "Li, Mengqi"
Now showing items 1-8 of 8
-
Electrokinetic phenomena of electrically induced Janus droplets and their applications
Li, Mengqi (University of Waterloo, 2018-12-04)Janus droplets refer to droplets comprised of two hemispheres with different properties. Among the Janus droplets, electrically anisotropic Janus droplets with two sides carrying opposite signs of surface charges are unique. ... -
Fabrication and electrokinetic motion of electrically anisotropic Janus droplets in microchannels
Li, Dongqing; Li, Mengqi (Wiley, 2016-09-07)This paper presents experimental investigations of the fabrication and the motion of electrically anisotropic Janus droplets in a microchannel under externally applied direct current (DC) electrical field. The fabrication ... -
Focusing particles by induced charge electrokinetic flow in a microchannel
Li, Dongqing; Song, Yongxin; Wang, Chengfa; Pan, Xin-xiang; Li, Mengqi (Wiley, 2016-02-16)A novel method of sheathless particle focusing by induced charge electrokinetic flow in a microchannel is presented in this paper. By placing a pair of metal plates on the opposite walls of the channel and applying an ... -
Nonlinear electrokinetic motion of electrically induced Janus droplets in microchannels
Li, Mengqi; Li, Dongqing (Elsevier, 2019-03-07)The nonlinear electrokinetic motion of electrically induced Janus droplets (EIJDs) in a microchannel is studied in this paper. The EIJDs were fabricated by operating the positively charged aluminum oxide nanoparticles to ... -
Redistribution of charged aluminum nanoparticles on oil droplets in water in response to applied electrical field
Li, Dongqing; Li, Mengqi (Springer, 2016-05-18)Janus droplets with two opposite faces of different physical or chemical properties have great potentials in many fields. This paper reports a new method for making Janus droplets by covering one side of the droplet with ... -
Redistribution of mobile surface charges of an oil droplet in water in applied electric field
Li, Dongqing; Li, Mengqi (Elsevier, 2016-10)Most researches on oil droplets immersed in aqueous solutions assume that the surface charges of oil droplets are, similar to that of solid particles, immobile and distributed uniformly under external electric field. ... -
Self-propulsion of aluminum particle-coated Janus droplet in alkaline solution
Li, Mengqi; Li, Dongqing (Elsevier, 2018-12-15)Janus droplet motion powered by gas bubbles is studied in this paper. The Janus droplets were fabricated by partially covering one side of an oil droplet with aluminum particles under gravity effect. By placing the Janus ... -
Vortices around Janus droplets under externally applied electrical field
Li, Dongqing; Li, Mengqi (Springer, 2016-05)In this study, the Janus droplet is an oil droplet covered with aluminum oxide nanoparticles on one side of the droplet surface under applied DC electrical field. The vortices around Janus droplets fixed on a horizontal ...