Alternating current induced-charge electrophoresis of leaky dielectric Janus particles

2012 ◽  
Vol 24 (8) ◽  
pp. 082003 ◽  
Author(s):  
Alicia M. Boymelgreen ◽  
Touvia Miloh
Keyword(s):  
Alternating Current ◽  
Janus Particles ◽  
Induced Charge ◽  
Leaky Dielectric

A novel micromixer based on the alternating current-flow field effect transistor

Lab on a Chip ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 186-197 ◽  
Author(s):  
Yupan Wu ◽  
Yukun Ren ◽  
Ye Tao ◽  
Likai Hou ◽  
Qingming Hu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Flow Field ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Current Flow ◽  
Alternating Current ◽  
Low Energy ◽  
Low Energy Consumption ◽  
Effect Transistor ◽  
Induced Charge

Induced-charge electroosmosis (ICEO) phenomena have been attracting considerable attention as a means for pumping and mixing in microfluidic systems with the advantage of simple structures and low-energy consumption.

Continuous-flow focusing of microparticles using induced-charge electroosmosis in a microfluidic device with 3D AgPDMS electrodes

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 66602-66610 ◽  
Author(s):  
Yankai Jia ◽  
Yukun Ren ◽  
Hongyuan Jiang
Keyword(s):  
Microfluidic Device ◽  
Continuous Flow ◽  
Alternating Current ◽  
Flow Focusing ◽  
Negative Effects ◽  
Induced Charge

Efficient continuous-flow focusing of microparticles using induced-charge electroosmosis is presented and 3D AgPDMS electrodes are employed to avoid the negative effects of alternating current electroosmosis and dielectrophoresis.

Induced-charge electrophoresis of uncharged dielectric spherical Janus particles

2012 ◽  
Vol 33 (5) ◽  
pp. 870-879 ◽  
Author(s):  
Alicia M. Boymelgreen ◽  
Touvia Miloh
Keyword(s):  
Janus Particles ◽  
Induced Charge

scholarly journals Frequency Response of Induced-Charge Electrophoretic Metallic Janus Particles

Micromachines ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 334 ◽  
Author(s):  
Chong Shen ◽  
Zhiyu Jiang ◽  
Lanfang Li ◽  
James F. Gilchrist ◽  
H. Daniel Ou-Yang
Keyword(s):  
Electric Field ◽  
Drag Coefficient ◽  
Janus Particles ◽  
Crossover Frequency ◽  
Electric And Magnetic Fields ◽  
Linear Movement ◽  
Phase Sensitive ◽  
Induced Charge ◽  
And Control ◽  
Phoretic Mobility

The ability to manipulate and control active microparticles is essential for designing microrobots for applications. This paper describes the use of electric and magnetic fields to control the direction and speed of induced-charge electrophoresis (ICEP) driven metallic Janus microrobots. A direct current (DC) magnetic field applied in the direction perpendicular to the electric field maintains the linear movement of particles in a 2D plane. Phoretic force spectroscopy (PFS), a phase-sensitive detection method to detect the motions of phoretic particles, is used to characterize the frequency-dependent phoretic mobility and drag coefficient of the phoretic force. When the electric field is scanned over a frequency range of 1 kHz–1 MHz, the Janus particles exhibit an ICEP direction reversal at a crossover frequency at ~30 kH., Below this crossover frequency, the particle moves in a direction towards the dielectric side of the particle, and above this frequency, the particle moves towards the metallic side. The ICEP phoretic drag coefficient measured by PFS is found to be similar to that of the Stokes drag. Further investigation is required to study microscopic interpretations of the frequency at which ICEP mobility switched signs and the reason why the magnitudes of the forward and reversed modes of ICEP are so different.

scholarly journals Orientation-dependent induced-charge electrophoresis of magnetic metal-coated Janus particles with different coating thicknesses

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46118-46123 ◽  
Author(s):  
Chia-Hsien Lin ◽  
Yu-Liang Chen ◽  
Hong-Ren Jiang
Keyword(s):  
Metallic Coating ◽  
Janus Particles ◽  
Janus Particle ◽  
Magnetic Metal ◽  
Induced Charge

The ICEP behavior of the metal-coated Janus particle is dominated by the thickness of its metallic coating and its orientation.

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