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Article Dans Une Revue Physics Procedia Année : 2015

Nonlinear echoes from encapsulated antibubbles

Résumé

An antibubble consists of a liquid droplet, surrounded by a gas, often with an encapsulating shell. Antibubbles of microscopic sizes suspended in fluids are acoustically active in the ultrasonic range. Antibubbles have applications in food processing and guided drug delivery. We study the sound generated from antibubbles, with droplet core sizes in the range of 0–90% of the equilibrium antibubble inner radius. The antibubble resonance frequency, the phase difference of the echo with respect to the incident acoustic pulse, and the presence of higher harmonics are strongly dependent of the core droplet size. Antibubbles oscillate highly nonlinearly around resonance size. This may allow for using antibubbles in clinical diagnostic imaging and targeted drug delivery.
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Origine : Publication financée par une institution

Dates et versions

hal-03192969 , version 1 (11-04-2021)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Kristoffer Johansen, Spiros Kotopoulis, Albert Thijs Poortinga, Michiel Postema. Nonlinear echoes from encapsulated antibubbles. Physics Procedia, 2015, 2015 International Congress on Ultrasonics, 2015 ICU Metz, 70, pp.1079-1082. ⟨10.1016/j.phpro.2015.08.230⟩. ⟨hal-03192969⟩
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