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INFERNOS project: Maxwell’s Demon in nanoscale systems
Posted on Sunday, October 13, 2013 @ 23:26:02 GMT by vlad

Science The European INFERNOS (Information, fluctuations, and energy control in small systems) project aims to realize experimentally Maxwell’s Demon* by developing electronic and biomolecular nanodevices that support this principle.

Project partners met earlier this week at the Faculty of Physics of the University of Barcelona. The project is centered on considering information as a thermodynamic parameter.

Its ideas may be applied to different fields of knowledge, like biology or computer science. For instance, DNA replication, a basic biological process, can be described as the action of small thermodynamic devices that are able to copy information.

Marco Ribezzi, researcher from the Department of Fundamental Physics, explains that “the principal novelty of INFERNOS is to bring a robust and rigorous experimental base for this field of knowledge.

“We aim at creating a device that can use information to supply/extract energy to/from a system”. In this sense, the UB group, in which researcher Fèlix Ritort from the former department also participates, focuses their activity on understanding how information and temperature changes are used in individual molecules manipulation...

More: INFERNOS project: Maxwell’s Demon in nanoscale systems



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Exorcising Maxwell’s Demon (Score: 1)
by vlad on Tuesday, January 05, 2016 @ 20:54:26 GMT
(User Info | Send a Message) http://www.zpenergy.com
by Sebastian Deffner - Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM 87545, USA/ December 30, 2015; Physics 8, 127

A pair of connected single-electron devices functions as a Maxwell's demon that operates without external control.
APS/Alan Stonebraker

Figure 1: [physics.aps.org] An electronic version of a self-contained (autonomous) Maxwell demon. The “system” is a single-electron box connected to an external potential. The demon monitors the charge on the box. (Left) If an electron (blue) enters the box, the demon immediate...

Physicists have been haunted by the idea of Maxwell's demon for almost 150 years. The beast, conjured in a thought experiment by James Clerk Maxwell, sorts particles in a gas according to their speeds, thus transferring heat from the colder, evenly mixed gas to the region containing the hotter, high-speed particles. At first sight, the demon appears to violate the second law of thermodynamics. But the paradox can be resolved by realizing that work must be performed on the demon for it to do its job properly. This description isn’t entirely satisfying, however, as it introduces an external—not necessarily physical—entity to do work on the demon. Jukka Pekola and colleagues of Aalto University in Finland [1] have now exorcised such nonphysical beings by realizing a nanodevice equivalent to a Maxwell's demon (Fig. 1), but one whose operation doesn’t depend on an external entity. This so-called autonomous device, also known as an information machine, is completely self-contained. So far, autonomous demons have been a purely theoretical concept; this new experimental system provides a way to test formulations of fundamental axioms of thermodynamics and descriptions of information processing...

Full text: http://physics.aps.org/articles/v8/127 [physics.aps.org]


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