Gel Electrophoresis Temperature Regulation

Maintaining constant temperature for gel electrophoresis applications provides several key benefits over the typical method of maintaining constant power. This application note shows how to use LabSmith’s uProcess™ microfluidic automation software and the uEP01 Electrophoresis Power Module to maintain constant temperature. Download the Application Note here. Download the sample uProcess automation script here.

Microchip-Capillary Electrophoresis Device

Microfluidic devices, with their potential for portability and rapid analysis times, can bring cost-effective flexibility to modern analytical chemistry applications. However, the design and fabrication of microchips can involve trade-offs between cost, flexibility of configuration, and ideal surface properties or performance. To circumvent these drawbacks, we have developed a hybrid platform consisting of simple microfabricated … Read more

Circulating Tumor Cell Immuncapture Automation

The manipulation of biological samples for diagnostic purposes requires reproducibility and simplicity to be useful in practice. As microfluidic devices transition towards use in medical diagnostics, traditional handheld syringe pumps can be too bulky and laborious for medical procedures that require quick turnaround times. Here, we discuss the evaluation of a portable breadboard platform that … Read more

Improving Dielectrophoretic Concentrator

Sample preparation is a bottleneck for protein, cell and nucleic acid analysis, regardless of the analytical technique used. An important, and tedious, preparation step is selective concentration of the target of interest, particularly when target abundance is low. One approach is insulator-based dielectrophoresis, or iDEP, in which insulators, often etched in glass or stamped in … Read more

Automated Immunoblotting for Native Protein Analysis

He, M.; Herr, A.E. “Microfluidic Polyacrylamide Gel Electrophoresis with In-situ Immunoblotting for Native Protein Analysis.” Analytical Chemistry, 2009, 81, 8177-84. Abstract We introduce an automated immunoblotting method that reports protein electrophoretic mobility and identity in a single streamlined microfluidic assay. Native polyacrylamide gel electrophoresis (PAGE) was integrated with subsequent in situ immunoblotting. Integration of three … Read more

Prediction of Trapping Zones

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

Improved Dielectrophoretic Concentration for iDEP

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

Protein Manipulation with iDEP

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

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