Journal
SMALL
Volume 13, Issue 38, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201701555
Keywords
laser ultrasound; microcavitation; tissue cutting
Categories
Funding
- University of Michigan
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Beyond the implementation of the photoacoustic effect to photoacoustic imaging and laser ultrasonics, this study demonstrates a novel application of the photoacoustic effect for high-precision cavitation treatment of tissue using laser-induced focused ultrasound. The focused ultrasound is generated by pulsed optical excitation of an efficient photoacoustic film coated on a concave surface, and its amplitude is high enough to produce controllable microcavitation within the focal region (lateral focus < 100 mu m). Such microcavitation is used to cut or ablate soft tissue in a highly precise manner. This work demonstrates precise cutting of tissue-mimicking gels as well as accurate ablation of gels and animal eye tissues.
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