Abstract
A particle of molecular dimensions which can exist in two states is associated with a membrane pore through which molecules of a gas can pass. The gas molecules from two identical phases on either side of the membrane may pass only when the particle is in one particular state. If certain restrictions are imposed on the system, then the particle appears to act like a Maxwell's Demon(1) which “handles” the gas molecules during their passage through the pore.
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Gordon, L.G.M. Maxwell's Demon and detailed balancing. Found Phys 13, 989–997 (1983). https://doi.org/10.1007/BF00729519
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DOI: https://doi.org/10.1007/BF00729519