Chemical generation of acoustic waves: A giant photoacoustic effect
- Brown Univ., Providence, RI (United States)
An anomalous photoacoustic effect is produced when a suspension of carbon particles in water is irradiated by a high-power, pulsed laser. The photoacoustic effect has an amplitude on the order of 2000 times that produced by a dye solution with an equivalent absorption coefficient and gives a distinctly audible sound above an uncovered cell. Transient grating experiments with carbon suspensions show a doubling of the acoustic frequency corresponding to the optical fringe spacing of the grating. The effect is thought to originate in high-temperature chemical reactions between the surface carbon and the surrounding water. 26 refs., 1 fig.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 171856
- Journal Information:
- Science, Vol. 270, Issue 5238; Other Information: PBD: 10 Nov 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sensitive Detection: Photoacoustics, Thermography, and Optical Radiation Pressure
Photoacoustic trace detection of gases at the parts-per-quadrillion level with a moving optical grating
Photoacoustic shock generation in carbon suspensions
Technical Report
·
Fri Apr 21 00:00:00 EDT 2017
·
OSTI ID:171856
Photoacoustic trace detection of gases at the parts-per-quadrillion level with a moving optical grating
Journal Article
·
Mon Jun 26 00:00:00 EDT 2017
· Proceedings of the National Academy of Sciences of the United States of America
·
OSTI ID:171856
+3 more
Photoacoustic shock generation in carbon suspensions
Journal Article
·
Mon Dec 27 00:00:00 EST 1999
· Applied Physics Letters
·
OSTI ID:171856
+1 more