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Three-dimensional micro-electrode systems, fabricated by IC technology, were used for the trapping and aggregation of suspended microscopic dielectric particles. To achieve negative dielectrophoresis (repelling forces) in aqueous solution, phase-shifted RF electric fields were applied to the micro-electrodes. Reliable dielectrophoretic trapping in a liquid stream usually requires dipole forces (lowest...
Breakdown homogeneity and triggering of bipolar transistor action are studied in Smart Power technology ESD protection devices via measurements of temperature distribution and thermal dynamics by a laser interferometric technique. Temperature changes in the devices biased in the avalanche multiplication or snapback region are monitored by ns-time scale measurements of the optical phase shift. The...
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