Department of Complex Matter
Jamova cesta 39, 1000 Ljubljana, Slovenia

Dynamics of Quantum matter

We explore non-equilibrium many-body dynamics in quantum systems that experience symmetry-breaking, topological, or jamming transitions. These systems encompass superconductors, charge-density wave, and magnetic materials.

Experimental Soft Matter Physics

The research is conducted within the “Light and Matter” research program. The interaction of light with matter is one of the most important fields of physics and optical processes are indispensable in many branches of modern industry.

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April 11, 2024
Dr. Dragan Mihailović, a leading researcher in the field of quantum systems at the Jožef Stefan Institute (IJS), has successfully won the third project of the European Research Council (ERC), HIMMS (High-Resolution ...
Home / Events / Seminar: Viscous Mechano-Electric Response of a Ferroelectric Nematic Liquid

Seminar: Viscous Mechano-Electric Response of a Ferroelectric Nematic Liquid

May 21, 2024 , 14:00 , F7 Seminar Room
Speaker: Peter Medle Rupnik

We observed a direct viscous mechano-electric response in a room-temperature ferroelectric nematic liquid, i.e. a unique material that combines 3D fluidity with ferroelectric ordering. We placed the liquid into a deformable container with electrodes and measured the electric current generated by the mechanical actuation of the sample. This gave us an insight into several possible mechanisms of mechano-electric transduction, where ferroelectric ordering within the liquid was changed by material flow induced as a viscous response to external stress. Irregular manual actuation revealed that the electric response can be used to distinguish between forces of different magnitudes and durations. On the other hand, a periodic actuation at different frequencies (1-200 Hz) produced consistent results. We realized that the observed mechano-electric phenomena are promising for a range of possible applications spanning from simulations of fingertip sensors to energy harvesting from slow ambient mechanical disturbances.