?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Effect+of+Backing+on+Carbon-Polymer+Nanocomposite+Sources+for+Laser+Generation+of+Broadband+Ultrasound+Pulses&rft.creator=Rajagopal%2C+S&rft.creator=Treeby%2C+BE&rft.creator=Cox%2C+BT&rft.description=Light+absorbing+polymer+nanocomposites+have+been+widely+investigated+as+a+source+of+broadband+and+high+amplitude+ultrasound+generated+via+pulsed+laser+excitation.+Biomedical+applications+of+such+sources+include+both+imaging+and+ablative+therapies.+Fabrication+of+light+absorbing+nanocomposite+sources+has+mostly+involved+elaborate+chemistry.+Here%2C+a+nanocomposite+composed+of+multi-walled+carbon+nanotubes+mechanically+dispersed+in+polydimethylsiloxane+polymer+is+used.+The+nanocomposite+film+was+backed+on+optically+clear+polydimethylsiloxane+and+laboratory+grade+glass+slides.+The+two+backed+sources+were+investigated+using+two+lasers+whose+full-width+half+maximum+durations+were+2.6+and+4.0+ns.+It+was+found+that+the+characteristics+of+the+acoustic+field+generated+from+the+nanocomposite+source+showed+a+significant+dependence+on+the+backing+when+the+stress+confinement+criterion+is+not+satisfied.&rft.subject=hydrophone%0D%0A%2C%0D%0Acalibration%0D%0A%2C%0D%0Ananocomposites%0D%0A%2C%0D%0Aphotoacoustics&rft.publisher=IEEE&rft.date=2018-12-20&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A++2018+IEEE+International+Ultrasonics+Symposium+(IUS).++++IEEE+(2018)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10068083%2F7%2FRajagopal_2018_Rajagopal_IEEE_backing.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10068083%2F&rft.rights=open