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Platinum wire electrodes are commonly used to apply voltage to a fluidic channel. Although the approach is relatively simple, proper preparation of the electrode is very important to prevent field concentrations in the channels. Field concentrations can cause a multitude of problems, including bubble formation, cell lysing, localized heating, chemical reactions, and clogging of channels.
Salmanzadeh, A.; Romero, L. Shafiee, H.; Gallo-Villanueva, R.C.; Stremler, M.A.; Cramer, S.D.; Davalos, R.D.; Isolation of prostate tumor initiating cells (TICs) through their dielectrophoretic signature. Lab Chip, 2012,12, 182-189. Abstract In this study, the dielectrophoretic response of prostate tumor initiating cells (TICs) was investigated in a microfluidic system utilizing contactless dielectrophoresis (cDEP). The dielectrophoretic response … Read more
Baylon-Cardiel, J.L.; Lapizco-Encinas,B.L.;Reyes-Betanzo,C.; Chavez-Santoscoy,A.V.; Martınez-Chapa, S.O. Prediction of trapping zones in an insulator-based dielectrophoretic device Lab-on-a-Chip, 2009, 9, 2896–2901. Abstract A mathematical model is implemented to study the performance of an insulator-based dielectrophoretic device. The geometry of the device was captured in a computational model that solves Laplace equation within an array of cylindrical insulating … Read more
Martínez-López , J.I. ; Moncada-Hernández, H.;. Baylon-Cardiel, J. L.; Martínez- Chapa, S. O.; Rito-Palomares, M. ; Lapizco-Encinas, B.H., Characterization of electrokinetic mobility of microparticles in order to improve dielectrophoretic concentration, Anal Bioanal. Chem. 2009,394, 293–302. Abstract Insulator-based dielectrophoresis (iDEP), an efficient technique with great potential for miniaturization, has been successfully applied for the manipulation of … Read more
Lapizco-Encinas, B.H.; Ozuna-Chaco´, S.; Rito-Palomares, M.; Protein manipulation with insulator-based dielectrophoresis and direct current electric fields, J.Chrom. A, 2008, 1206, 45–51. Abstract The present study demonstrates the manipulation of protein particles employing insulator-baseddielectrophoresis (iDEP) and directcurrent (d.c.) electricfields. Fluorescently labeled bovine serum albumin (BSA) protein particles were concentrated inside a microchannel that contained an array … Read more