Moderadores
Keynote: Frustrated Bearings
- Hans Herrmann (PMMH, ESPCI Paris, France and UFC, Fortaleza, Brazil)
Keynote: What can Maxwell's demon do?
- John Bechhoefer (Simon Fraser University)
Keynote: Thermodynamics of Gambling Demons
- Gonzalo Manzano (Instituto de Física Interdisciplinar y Sistemas Complejos - IFISC (CSIC-UIB))
A bearing is a system of spheres (or disks) in contact. If in a bearing every loop must be even, one can obtain “bearing states”, in which touching spheres roll on each other without slip. We frustrate a system of touching spheres by imposing two different bearing states on opposite sides and search for the configurations of lowest energy dissipation. For Coulomb friction (with random friction...
Information engines are a modern realization of the Maxwell-demon thought experiment. They exploit “favorable fluctuations” of a heat bath to generate work, at the cost of dissipation in a measuring device. Experimental tests of these engines require accurate measurements and fast feedback control. We designed a simple information engine using optical tweezers and feedback to raise a...
More than 150 years ago, James Clerk Maxwell introduced a famous thought experiment, where a little intelligent being (the “demon”) defies the second law of thermodynamics by controlling a tiny door between two chambers with gases at different temperatures. Maxwell’s demon represented a cornerstone in the development thermodynamics of feedback control, and has attracted renewed attention...
