Maznev AA, McAuliffe DJ, Doukas AG, Nelson KA. Wide-band acoustic spectroscopy of biological material based on a laser-induced grating technique.
ULTRASOUND IN MEDICINE & BIOLOGY 1999;
25:601-607. [PMID:
10386736 DOI:
10.1016/s0301-5629(98)00191-4]
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Abstract
A laser-induced transient grating technique enables fast noncontact acoustic measurements on transparent biological materials in a frequency range from tens of megahertz to 1 GHz. We have applied this method to the characterization of bovine vitreous and found high-frequency acoustic attenuation values to be close to those of water, with a quadratic dependence on frequency, in contrast to low-frequency data. The potential of the technique for studying other biological materials, such as human stratum corneum, is demonstrated.
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