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Zerstörungsfreie Tomographie von Raumladungs- und Polarisationsverteilungen mittles Wärmepulsen

  • Non-destructive, three-dimensional imaging of space-charge and polarization distributions in electret materials has been implemented by means of laser-induced thermal pulses. In pyroelectric films of poled poly(vinylidene fluoride), images of up to 45 x 45 pixels with a depth resolution of less than 0.5 mu m and a lateral resolution of 40 mu m were recorded, the latter being limited by fast thermal diffusion in the absorbing metallic front electrode. Initial applications include the analysis of polarization distributions in corona-poled piezoelectric sensor cables and the detection of patterned space-charge distributions in polytetrafluoroethylene films.

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Author:Axel Mellinger, Rosaura Flores SuarezGND, Rajeev Singh, Michael Wegener, Werner Wirges, Reimund Gerhard-MulthauptORCiDGND
Document Type:Article
Year of first Publication:2007
Year of Completion:2007
Release Date:2017/03/24
Source:Technisches Messen : tm. ISSN 0171-8096. - 74 (2007), 9, S. 437 - 444
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert
Institution name at the time of publication:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik