Characterization of Piezoelectric PDMS-Nanoparticle Composites

[摘要] In this work, the novel fabrication and characterization of elastomeric piezoelectric nanocomposites are explored. Fabrication methods explored herein utilize ball milled barium titanate powder dispersions, along with double walled carbon nanotubes which are dispersed in toluene though the use of an ultrasonic probe. Test devices are then constructed with electrodes made from evaporated gold on polyimide foils and protective dielectrics of pristine PDMS. Two different device construction methods are explored utilizing both direct contact bonding and plasma bonding of the active composite layers to the dielectric/electrode. Test samples are evaluated through the use of a dedicated Berlincourt type piezoelectric d33meter.

[发布机构] Electronics and Signal Processing Laboratory EPFL Neuchâtel, Switzerland^1;Department of Radiology, University Hospital Lausanne (CHUV), University of Lausanne (UNIL), Switzerland^2;Center for Biomedical Imaging (CIBM), Lausanne, Switzerland^3;Powder Technology Laboratory, EPFL Lausanne, Switzerland^4;Sensors, Actuators and Microsystems Laboratory, EPFL Neuchatel, Switzerland^5

[效力级别] 能源学

[关键词] Active composites;Construction method;Double walled carbon nanotubes;Fabrication and characterizations;Fabrication method;Plasma bonding;Powder dispersions;Ultrasonic probe