Harnessing the dynamics of acoustically driven two-phase fluid media
Event details
| Date | 10.03.2022 |
| Hour | 16:00 › 17:00 |
| Speaker | Prof. Outi Supponen Institute of Fluid Dynamics, ETH Zurich |
| Location | Online |
| Category | Conferences - Seminars |
| Event Language | English |
Abstract: Bubbles oscillate volumetrically under the effect of pressure fluctuations, such as those produced by sound waves. When driven into a violent collapse, they can yield strong sound emissions, high-speed jets, and extreme heating – a behaviour known as cavitation. Here, we will present ongoing research efforts to reach a fundamental understanding of the intriguing dynamics of bubbles across a wide range of scales from a single bubble level to that of bubble clouds. For this, we generally combine ultra-high-speed experiments with theory. More specifically, we will report on our progress in temporally resolving the oscillations and translations of microbubble ultrasound contrast agents, elucidating the role of cavitation in ultrasound-mediated tissue adhesion, reaching extreme flow focusing using tandem bubbles and discussing effective capillarity in ultrasound-driven bubble clouds. The broad aim of this research lies in the quest for harnessing the power of acoustically driven two-phase fluid media for a variety of engineering applications, including medical ultrasound diagnostics, drug delivery, lithotripsy, sonochemistry, surface cleaning and micro-fluidics.
Practical information
- General public
- Invitation required
- This event is internal
Organizer
- ETH Zurich and EPF Lausanne http://swissmechseminars.ch
Contact
- Prof. George Haller Nonlinear Dynamical Systems, ETH Zurich and Prof. John Kolinski Engineering Mechanics of Soft Interfaces, EPF Lausanne