Crack formation in desiccating Laponite® films under AC field: Effect of varying frequency

2018 ◽  
Vol 156 ◽  
pp. 69-76 ◽  
Author(s):  
Sudeshna Sircar ◽  
Sujata Tarafdar ◽  
Tapati Dutta
Micromachines ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 432 ◽  
Author(s):  
Kai Du ◽  
Weiyu Liu ◽  
Yukun Ren ◽  
Tianyi Jiang ◽  
Jingni Song ◽  
...  

In this study, we make use of the AC field-effect flow control on induced-charge electroosmosis (ICEO), to develop an electrokinetic micromixer with 3D electrode layouts, greatly enhancing the device performance compared to its 2D counterpart of coplanar metal strips. A biased AC voltage wave applied to the central gate terminal, i.e., AC field-effect control, endows flow field-effect-transistor of ICEO the capability to produce arbitrary symmetry breaking in the transverse electrokinetic vortex flow pattern, which makes it fascinating for microfluidic mixing. Using the Debye-Huckel approximation, a mathematical model is established to test the feasibility of the new device design in stirring nanoparticle samples carried by co-flowing laminar streams. The effect of various experimental parameters on constructing a viable micromixer is investigated, and an integrated microdevice with a series of gate electrode bars disposed along the centerline of the channel bottom surface is proposed for realizing high-flux mixing. Our physical demonstration on field-effect nonlinear electroosmosis control in 3D electrode configurations provides useful guidelines for electroconvective manipulation of nanoscale objects in modern microfluidic systems.


1982 ◽  
Vol 15 (9) ◽  
pp. 1769-1773 ◽  
Author(s):  
D Krishna Rao ◽  
J Majhi
Keyword(s):  

2009 ◽  
Vol 42 (24) ◽  
pp. 245005 ◽  
Author(s):  
Srinivasan Balakrishnan ◽  
Michael J Bonder ◽  
George C Hadjipanayis

2004 ◽  
Vol 70 (3) ◽  
Author(s):  
Justino R. Madureira ◽  
Peter A. Schulz ◽  
Marcelo Z. Maialle

1984 ◽  
Vol 56 (2) ◽  
pp. 572-574
Author(s):  
A. K. Srivastava ◽  
K. L. Narasimhan ◽  
D. R. Bapat

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