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.

Cooperative Absorption-Induced Charge Transfer in a Solid

1990 ◽  
Author(s):  
Isidore Last ◽  
Thomas F. George
Keyword(s):  
Charge Transfer ◽  
Induced Charge

Analysis of power devices breakdown behaviour by ion beam and electron beam induced charge microscopy

2008 ◽  
Author(s):  
R. Siemieniec ◽  
A. Pugatschow ◽  
C. Geissler ◽  
H.-J. Schulze ◽  
F.-J. Niedernostheide ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Beam ◽  
Power Devices ◽  
Induced Charge

scholarly journals Towards an understanding of induced-charge electrokinetics at large applied voltages in concentrated solutions

2009 ◽  
Vol 152 (1-2) ◽  
pp. 48-88 ◽  
Author(s):  
Martin Z. Bazant ◽  
Mustafa Sabri Kilic ◽  
Brian D. Storey ◽  
Armand Ajdari
Keyword(s):  
Concentrated Solutions ◽  
Induced Charge

scholarly journals Active Janus particles in a complex plasma

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
V. Nosenko ◽  
F. Luoni ◽  
A. Kaouk ◽  
M. Rubin-Zuzic ◽  
H. Thomas
Keyword(s):  
Janus Particles ◽  
Complex Plasma
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