Waving Cilium Waving Cilium

Tamsin Anne Spelman

Armoured Microbubbles

Flow field around AMB Armoured microbubbles (AMB) are hollow partial spheres with a bubble captured inside it, which oscillates under ultrasound, designed by our experimental collaborators N. Bertin and P. Marmottant based in Universite Grenobles Alpes. Their use is as a microswimmer or microfluidic mixers. This motivated our development of an analytic model to identify the streaming flow around a general oscillating spherical body. When specialised to the AMB the streaming flow was in close agreement to experiments. We have also analysed the resonances of the system and are currently studying the use of the AMBs as mixers.
In collaboration with:
Eric Lauga (University of Cambridge)
Nicolas Bertin (University Grenoble Alpes)
Philippe Marmottant (University Grenoble Alpes)

Magnetically Acutated Artificial Cilium

Motion of cilium Arrays of artificial cilia are used to push flow through microfluidic devices. We are studying the stroke shape of a ferromagnetic cilium, determining how variation of the systems parameters effects the stroke shape.
In collaboration with:
Eric Lauga (University of Cambridge)