Shape oscillations of bubbles driven by modulated ultrasonic radiation pressure: Experiments
نویسندگان
چکیده
منابع مشابه
Shape oscillations of particle-coated bubbles and directional particle expulsion
Bubbles stabilised by colloidal particles can find applications in advanced materials, catalysis and drug delivery. For applications in controlled release, it is desirable to remove the particles from the interface in a programmable fashion. We have previously shown that ultrasound waves excite volumetric oscillations of particle-coated bubbles, resulting in precisely timed particle expulsion d...
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An air bubble driven by ultrasound can become shape-unstable through a parametric instability. We report time-resolved optical observations of shape oscillations (mode n=2 to 6) of micron-sized single air bubbles. The observed mode number n was found to be linearly related to the ambient radius of the bubble. Above the critical driving pressure threshold for shape oscillations, which is minimal...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1991
ISSN: 0001-4966
DOI: 10.1121/1.2029379