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Preliminary experiments demonstrating a "directed" Maxwell's granular demon

2018/03/22 by Frank Corrales, Corrales, Frank, Y. Nahmad-Molinari +3
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #Granular flow and fluidized beds #Soft Condensed Matter (cond-mat.soft)

paper · pdf · doi:10.48550/arxiv.1803.08535

openalex publication_date 2018/03/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper, we design a system of two symmetrical containers communicated by an aperture, in which a granular gas of glass spheres is created by shaking laterally the whole system in a planetary mill. If the aperture consists in a symmetrical hole, the two halves end up with the same number of grains after some time when initially all particles are into in one of the containers. However, when a funnel-like aperture is used, a robust symmetry breaking is induced: if all the grains are originally deposited in the container facing the wide side 95% of the grains pass to the opposite side in a relatively small time.

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