CE30 - Physique de la matière condensée et de la matière diluée

Self Rolling Rods powered by Light and Chemical gradients – RODROLLS

Submission summary

Inspired by the ability of influenza viruses to self-roll on surfaces, we propose a to create artificial photoactive rod particles and investigate their propulsion as rotary motors close to hard and soft interfaces. Self-propulsion results from the interaction between the rod and a light/chemical field gradient normal to the surface, which creates an instability that leads to rolling. Hence, we aim at designing a new class of active particles, which go beyond existing mechanisms (Quinke, Leidenfrost and Fiberboid effects) .The rod geometry will allow us to tune the directionality of the persistent motion and observe dynamics in dilute and concentrated regimes to understand, control and exploit the activity generated by symmetric particles.In line with the groups’ expertise, new rod systems based on photoactive materials (Fe2O3, Ag, TiO2) will be designed by the German Team and studied theoretically and experimentally close to solid interfaces by the French Team.

Project coordination

Igor KULIC (Institut Charles Sadron (UPR 22))

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


I.C.S Institut Charles Sadron (UPR 22)
TU Dresden / Physical Chemistry and Electrochemistry

Help of the ANR 323,478 euros
Beginning and duration of the scientific project: March 2022 - 36 Months

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