Impedance

Output Power Computation and Adaptation Strategy of an Electrosurgery Inverter for Reduced Collateral Tissue Damage

Output Power Computation and Adaptation Strategy of an Electrosurgery Inverter for Reduced Collateral Tissue Damage
Output Power Computation and Adaptation Strategy of an Electrosurgery Inverter for Reduced Collateral Tissue Damage 710 400 IEEE Transactions on Biomedical Engineering (TBME)
This paper details two power-computation approaches for an electrosurgical inverter involving high-frequency and nonlinearly distorted outputs, and presents the impedance-based power-adaptation strategy that may motivate further research towards zero-collateral-damage electrosurgery. read more

On-Chip Impedance Quantification of Parasitic Voltages During AC Electrokinetic Trapping
Author(s)3: Vahid Farmehini, Walter Varhue, Armita Salahi, Alexandra R. Hyler, Jaka Čemažar, Rafael Davalos, Nathan S. Swami
On-Chip Impedance Quantification of Parasitic Voltages During AC Electrokinetic Trapping 170 177 IEEE Transactions on Biomedical Engineering (TBME)
Monitoring the effectiveness and location of cell or particle trapping under microfluidic force fields is currently achieved by cumbersome imaging methods that require extensive microscopy to be conducted by a trained operator, with limited ability to rapidly trigger downstream decisions. We present an embedded circuit for an impedance sensor that directly interfaces to a microfluidic chip for the monitoring of cell or particle trapping based on the level and frequency response of parasitic voltage drops measured during AC electrokinetic manipulation, to enable assessment of trapping efficacy of the device geometry and to rapidly inform downstream cell separation decisions. read more
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