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Dielectrophoresis with 3D microelectrodes fabricated by surface tension assisted lithography
Author(s) -
Nasabi Mahyar,
Khoshmanesh Khashayar,
TovarLopez Francisco J.,
Kalantarzadeh Kourosh,
Mitchell Arnan
Publication year - 2013
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.201300233
Subject(s) - microelectrode , dielectrophoresis , planar , materials science , electric field , lithography , multielectrode array , nanotechnology , optoelectronics , microfluidics , electrode , chemistry , computer science , physics , computer graphics (images) , quantum mechanics
This paper demonstrates the utilization of 3D semispherical shaped microelectrodes for dielectrophoretic manipulation of yeast cells. The semispherical microelectrodes are capable of producing strong electric field gradients, and in turn dielectrophoretic forces across a large area of channel cross‐section. The semispherical shape of microelectrodes avoids the formation of undesired sharp electric fields along the structure and also minimizes the disturbance of the streamlines of nearby passing fluid. The advantage of semispherical microelectrodes over the planar microelectrodes is demonstrated in a series of numerical simulations and proof‐of‐concept experiments aimed toward immobilization of viable yeast cells.