TY - GEN
T1 - A novel laser ultrasound transducer using candle soot carbon nanoparticles
AU - Chang, Wei Yi
AU - Kim, Jinwook
AU - Li, Sibo
AU - Huang, Wenbin
AU - Jiang, Xiaoning
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015
Y1 - 2015
N2 - Laser ultrasound provides a useful method to generate high frequency, broadband and high intensity acoustic waves. In this study, we demonstrated a novel optoacoustic transducer with high-energy conversion efficiency by using candle soot nanoparticles polydimethylsiloxane (CSPs-PDMS) composite. Carbon nanoparticles are used because of their excellent properties of light absorption and heat transfer. The mean diameter of collected candle soot carbon nanoparticles is about 40 nm, and the light absorption ratio at 532 nm wavelength is up to 96.24%. The prototyped CSPs-PDMS composite laser ultrasound transducer was excited by laser pulses, and the acoustic beam profile was measured and compared with Field II simulation results. Energy conversion coefficient and -6 dB frequency bandwidth of CSPs-PDMS composite laser ultrasound transducer were measured to be 4.41 × 10-3 and 21 MHz, respectively. The unprecedented laser ultrasound transduction performance using CSNPs-PDMS nano-composites is promising for a broad range of ultrasound therapy and non-destructively testing applications.
AB - Laser ultrasound provides a useful method to generate high frequency, broadband and high intensity acoustic waves. In this study, we demonstrated a novel optoacoustic transducer with high-energy conversion efficiency by using candle soot nanoparticles polydimethylsiloxane (CSPs-PDMS) composite. Carbon nanoparticles are used because of their excellent properties of light absorption and heat transfer. The mean diameter of collected candle soot carbon nanoparticles is about 40 nm, and the light absorption ratio at 532 nm wavelength is up to 96.24%. The prototyped CSPs-PDMS composite laser ultrasound transducer was excited by laser pulses, and the acoustic beam profile was measured and compared with Field II simulation results. Energy conversion coefficient and -6 dB frequency bandwidth of CSPs-PDMS composite laser ultrasound transducer were measured to be 4.41 × 10-3 and 21 MHz, respectively. The unprecedented laser ultrasound transduction performance using CSNPs-PDMS nano-composites is promising for a broad range of ultrasound therapy and non-destructively testing applications.
KW - broadband ultrasound
KW - candle soot
KW - high frequency ultrasound
KW - nano-particles composite
KW - optoacoustic
UR - http://www.scopus.com/inward/record.url?scp=84964318644&partnerID=8YFLogxK
U2 - 10.1109/NANO.2015.7388855
DO - 10.1109/NANO.2015.7388855
M3 - Conference contribution
AN - SCOPUS:84964318644
T3 - IEEE-NANO 2015 - 15th International Conference on Nanotechnology
SP - 1243
EP - 1246
BT - IEEE-NANO 2015 - 15th International Conference on Nanotechnology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th IEEE International Conference on Nanotechnology, IEEE-NANO 2015
Y2 - 27 July 2015 through 30 July 2015
ER -