H. Hoislbauer, R. Schwodiauer, S. Bauer-Gogonea, S. Bauer
{"title":"Patterned piezoelectricity in charged, cellular polymers for air-borne ultrasound devices","authors":"H. Hoislbauer, R. Schwodiauer, S. Bauer-Gogonea, S. Bauer","doi":"10.1109/ISE.2002.1042943","DOIUrl":null,"url":null,"abstract":"Soft, flexible and sensitive piezoelectric materials are in demand for applications, like piezoelectric phased arrays for direction sensitive acoustic wave detection and emission. Here we report on air-borne ultrasound generation with novel piezoelectric polymers: charged, cellular polypropylene foams from VTT Chemical Technology. Based on polymer foams, two focusing devices have been developed and acoustically characterised: spherical acoustical sound generators and acoustical Fresnel zone plates. Both devices may pave the way for simple tools for non-destructive materials inspection.","PeriodicalId":331115,"journal":{"name":"Proceedings. 11th International Symposium on Electrets","volume":"95 6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings. 11th International Symposium on Electrets","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISE.2002.1042943","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
Soft, flexible and sensitive piezoelectric materials are in demand for applications, like piezoelectric phased arrays for direction sensitive acoustic wave detection and emission. Here we report on air-borne ultrasound generation with novel piezoelectric polymers: charged, cellular polypropylene foams from VTT Chemical Technology. Based on polymer foams, two focusing devices have been developed and acoustically characterised: spherical acoustical sound generators and acoustical Fresnel zone plates. Both devices may pave the way for simple tools for non-destructive materials inspection.
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