We report the experimental discovery of a self-assembled capsule, with density set by interfacial glass beads and an internal bubble, that automatically performs regular oscillations up and down a vial in response to a temperature gradient. Similar composites featuring interfacial particles and multiple internal compartments could be the solution to a variety of application challenges.
@article{arxiv.1211.6379,
title = {Particle-stabilized oscillating diver: a self-assembled responsive capsule},
author = {Joe W. Tavacoli and Job H. J. Thijssen and Paul S. Clegg},
journal= {arXiv preprint arXiv:1211.6379},
year = {2012}
}