Forming desired polymer patterns through spatial-modulated ionic wind

Abstract

Patterning polymer films is of significant interest for a broad range of applications. In this paper, a method of patterning polymer films is proposed, which is based on the liquid polymer film flow actuated by ionic wind. We placed the mask in ionic wind which can be modulated spatially. Under such conditions of spatial-modulated ionic winds, the liquid polymer presents different flow regimes, the morphologies of which duplicate the masks of different shapes. The patterning mechanism was investigated through numerical simulations. Different masks, such as line strips, serpentine-shaped stripes, and nuts, were adopted to manipulate the polymer-patterns with the presented method. The different polymer patterns were solidified and characterized, which verifies the feasibility of the methods for the formation of different complex polymer patterns.

Boosting Electrically Actuated Manipulation of Water Droplets on Lubricated Surfaces through a Corona Discharge

“…As a new method, the corona discharge has been used to control fluid motion, such as spreading and converging of dielectric liquid in our previous studies. 33,34 Here, we report a method of driving a lubrication liquid film flow to boost the electrically actuated droplet manipulation controllability through the corona discharge. The manipulation velocity of droplet motion can reach 30 mm/s.…”

“…Ions produced near the smaller electrode are acted by the electric field and exchange momentum with neutral molecules. As a new method, the corona discharge has been used to control fluid motion, such as spreading and converging of dielectric liquid in our previous studies. , …”

Generation and Transport of Dielectric Droplets along Microchannels by Corona Discharge

“…Therefore, droplets generation technologies have been developed by using external forces such as magnetic force [7], electric force [8], or acoustic force [9]. Recently, dielectric liquid approach by corona discharge has attracted much attention because of its promising potentials in many different fields [10][11][12][13].…”