Spontaneous electrical charging of droplets by conventional pipetting

D Choi, H Lee, DJ Im, IS Kang, G Lim, DS Kim… - Scientific reports, 2013 - nature.com
We report that a droplet dispensed from a micropipette almost always has a considerable
electrical charge of a magnitude dependent on the constituents of the droplet, on …

Next generation digital microfluidic technology: Electrophoresis of charged droplets

DJ Im - Korean Journal of Chemical Engineering, 2015 - Springer
Contact charging of a conducting droplet in a dielectric medium is introduced as a novel and
useful digital microfluidic technology as well as an interesting scientific phenomenon. The …

Review about PD and breakdown induced by conductive particles in an insulating liquid

C Pan, J Tang, G Chen, Y Zhang, X Luo - High Voltage, 2020 - Wiley Online Library
In insulating liquid, a conductive particle becomes charged through the interaction with a
conductor exposed to an applied field. Then, it migrates in the action of both electric field …

Electrophoresis of a charged droplet in a dielectric liquid for droplet actuation

DJ Im, J Noh, D Moon, IS Kang - Analytical chemistry, 2011 - ACS Publications
Electrophoretic motion of a charged droplet in a dielectric fluid under an electric field has
been investigated experimentally for use as a microdroplet actuation method. The effects of …

Discrete electrostatic charge transfer by the electrophoresis of a charged droplet in a dielectric liquid

DJ Im, MM Ahn, BS Yoo, D Moon, DW Lee, IS Kang - Langmuir, 2012 - ACS Publications
We have experimentally investigated the electrostatic charging of a water droplet on an
electrified electrode surface to explain the detailed inductive charging processes and use …

Electrical charging of a conducting water droplet in a dielectric fluid on the electrode surface

YM Jung, HC Oh, IS Kang - Journal of colloid and interface science, 2008 - Elsevier
It has been conceived that a charged droplet driven by Coulombic force can be used as a
droplet-based microreactor. As a basic research for such applications, electrical charging of …

Drop motion, deformation, and cyclic motion in a non-uniform electric field in the viscous limit

S Mhatre, RM Thaokar - Physics of Fluids, 2013 - pubs.aip.org
Drop motion and deformation of a conducting drop in a perfect (or leaky) dielectric fluid and
a leaky dielectric drop in a leaky dielectric fluid, in a non-uniform electric field is presented …

Electrophoretic mobility of a water-in-oil droplet separately affected by the net charge and surface charge density

Y Uematsu, H Ohshima - Langmuir, 2022 - ACS Publications
Water-in-oil emulsions and droplets exhibit physicochemical properties completely different
from those of oil-in-water emulsions and droplets. Thus, directly applying a standard …

Contact charge electrophoresis: fundamentals and microfluidic applications

KJM Bishop, AM Drews, CA Cartier, S Pandey, Y Dou - Langmuir, 2018 - ACS Publications
Contact charge electrophoresis (CCEP) uses steady electric fields to drive the oscillatory
motion of conductive particles and droplets between two or more electrodes. In contrast to …

Study of jum** water droplets on superhydrophobic surfaces with electric fields

B Traipattanakul, CY Tso, CYH Chao - … Journal of Heat and Mass Transfer, 2017 - Elsevier
Macro-sized droplets adhering to non-wetting surfaces, a phenomenon referred to as
progressive flooding, is one of the major problematic issues found on a superhydrophobic …