TY - JOUR A1 - Stanke, Sandra A1 - Bier, Frank Fabian A1 - Hoezel, Ralph T1 - Fluid streaming above interdigitated electrodes in dielectrophoresis experiments JF - Electrophoresis : microfluidics, nanoanalysis & proteomics N2 - For the investigation of alternating current electrokinetic effects, a system is presented that allows for the simultaneous observation of fluid flow above and around microelectrodes in all three directions in space. Beside the usual microscopical view from top, lateral observation through the same objective is made possible by two small mirrors that are placed next to the electrodes. Fluid flow and movement of fluorescent nanoparticles above interdigitated electrodes are monitored by fluorescence microscopy and digital imaging and are further analysed by image processing. Field frequencies are varied from 10 Hz to 1 GHz at up to 10V(rms). Electrical conductivity of the fluid is monitored in situ in the actual measuring chamber. KW - Dielectrophoresis KW - Fluid streaming KW - Nanobead Y1 - 2011 U6 - https://doi.org/10.1002/elps.201100096 SN - 0173-0835 VL - 32 IS - 18 SP - 2448 EP - 2455 PB - Wiley-Blackwell CY - Malden ER -