The effect of pulsed electric fields on biological cells: experiments and applications

作者: K.H. Schoenbach , F.E. Peterkin , R.W. Alden , S.J. Beebe

DOI: 10.1109/27.602501

关键词: Field (physics)OptoelectronicsBiofoulingElectric fieldWater coolingMaterials sciencePulse durationRange (particle radiation)Electric potential energyCoolantElectrical engineering

摘要: The effect of pulsed electric fields with amplitudes in the range 100 V/cm-100 kV/cm on bacteria and aquatic nuisance species has been explored. pulse duration was so short that heating biological matter could be neglected. electrical energy required for lysing bacteria, or stunning species, decreases when is reduced. For Eschericia coli, this tendency proven to hold pulsewidths as 60 ns. macroorganisms, however, it found less than 5 /spl mu/s, reversed: affect macroorganisms increases again. This minimum energy, maximum efficiency, respectively, can understood by taking time charging cell membrane into account. Applications field technique (PEFT) are biofouling prevention, debacterialization liquids, medicine. A series tests prevention a cooling system untreated water coolant demonstrated economic feasibility electro-technology.

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