We studied transient cavitation bubble formation and acoustic emission around individual laser-heated microparticles using subnanosecond time-resolved microscopy. Microcavitation bubbles were observed as early as 0.5 ns after the particles were heated by a 30 ps laser pulse. The bubbles expanded to a few micrometers in size and collapsed on the time scale of 0.1-1 μsec. We discuss microcavitation as the origin of anomalously large photoacoustic effects and nonlinear optical responses observed in laser-heated colloidal suspensions, as well as a mechanism for cellular damage in biologic tissue containing pigment particles. © 1998 American Institute of Physics.
CITATION STYLE
Lin, C. P., & Kelly, M. W. (1998). Cavitation and acoustic emission around laser-heated microparticles. Applied Physics Letters, 72(22), 2800–2802. https://doi.org/10.1063/1.121462
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