Thomas Speck

TL;DR: A (quasi-)two-dimensional colloidal suspension of self-propelled spherical particles propelled due to diffusiophoresis in a near-critical water-lutidine mixture finds that the driving stabilizes small clusters and undergoes a phase separation into large clusters and a dilute gas phase.

TL;DR: The first lawlike balance between applied work, exchanged heat, and internal energy on the level of a single trajectory is demonstrated, and the observed distribution of applied work is distinctly non-Gaussian in good agreement with numerical calculations.

TL;DR: In this article, the kinetic separation of repulsive active Brownian particles into a dense and a dilute phase is analyzed using a systematic coarse-graining strategy, and an effective Cahn-Hilliard equation on large length and time scales is derived, which implies that the separation process can be mapped onto that of passive particles.

TL;DR: In this article, a microscopic model for self-propelled particles lacking alignment interactions is presented, and the authors demonstrate that the microscopic origin of the instability is a force imbalance due to an anisotropic pair distribution leading to self-trapping.

TL;DR: The 2019 motile active matter roadmap of Journal of Physics: Condensed Matter addresses the current state of the art of the field and provides guidance for both students as well as established scientists in their efforts to advance this fascinating area as discussed by the authors.