{"title":"Near-Field Focusing of a Fast Electromagnetic Pulse","authors":"S. Xiao, T. Camp, J. Kolb, K. Schoenbach","doi":"10.1109/PPPS.2007.4345820","DOIUrl":null,"url":null,"abstract":"A new domain of pulsed electric field interactions with cell structures has been opened by using subnanosecond pulses, which are much less than the membrane charging time, allowing a direct electrical field-inner cell molecule interaction. This ultrashort pulse (rising 100 or so ps) also provides a possibility of guiding the energy into the deeper layers of biological targets nonintrusively. We are developing a wideband pulse system for focusing in the near field. This system has a spheroidal reflector with two focal points. A spherical TEM wave is launched in a rotationally symmetric structure towards the reflector from the first focal point by using a biconical radiator. Design issues like optimization of the reflector, biconical structure, feeding impedance and possible measurements will be presented.","PeriodicalId":446230,"journal":{"name":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PPPS.2007.4345820","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A new domain of pulsed electric field interactions with cell structures has been opened by using subnanosecond pulses, which are much less than the membrane charging time, allowing a direct electrical field-inner cell molecule interaction. This ultrashort pulse (rising 100 or so ps) also provides a possibility of guiding the energy into the deeper layers of biological targets nonintrusively. We are developing a wideband pulse system for focusing in the near field. This system has a spheroidal reflector with two focal points. A spherical TEM wave is launched in a rotationally symmetric structure towards the reflector from the first focal point by using a biconical radiator. Design issues like optimization of the reflector, biconical structure, feeding impedance and possible measurements will be presented.
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