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- W2042070569 abstract "We propose to perform the sonoporation by use of direct excitation employing the square wave pulser. Addition of the arbitrary waveform generator and programmable high voltage power supply to the pulser should allow for more economical experiment arrangement. Excitation stage has to be capable of transmitting high voltage signal into capacitive load. This paper reports the generator topology and performance evaluation experimental results. Transformer push-pull topology was suggested. Thanks to proposed pulser structure both unipolar and bipolar pulses can be obtained. Energy per pulse was suggested as performance parameter: any combination of achievable bust duration and repetition frequency can be estimated. Comparison of experimental results to Pspice modeling and energy delivered to load is presented. Energy per pulse at 300 V (600 Vpp) 2.7 MHz output into 3000 pF load was 1.1 mJ. Using 5 W power supplies this would allow for 3 kHz pulse repetition frequency single pulse of 100 Hz pulse repetition at 40 pulses burst. Focused 2.7 MHz center frequency transducer was targeted as load. Transducer impedance was measured to estimate the load and power delivery efficiency. It was found that 5 Ω is the optimal generator output impedance at 2.7 MHz. Using 2.7 MHz transducer we were able to achieve 1 MPa peak negative pressure at 250 V power supply." @default.
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- W2042070569 date "2012-01-01" @default.
- W2042070569 modified "2023-09-23" @default.
- W2042070569 title "Sonoporation generator design and performance evaluation" @default.
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- W2042070569 doi "https://doi.org/10.1063/1.3703180" @default.
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