We introduce a purely electrical version of Maxwell’s demon which does not involve mechanically moving parts such as trapdoors, etc. It consists of a capacitor, resistors, amplifiers, logic circuitry and electronically controlled switches and uses thermal noise in resistors (Johnson noise) to pump heat. The only types of energy of importance in this demon are electrical energy and heat. We also...

A new method for initializing an electron spin qubit in its low-energy state achieves a 20-fold reduction preparation error by using digital ``Maxwell's demon'' to effectively cool the far below initial temperature.

Maxwell refrigerator as a device that can transfer heat from cold to hot temperature reservoir making use of information was introduced by Mandal et al. \cite{Mandal2013a}. The model has two state demon and bit stream interacting with thermal reservoirs simultaneously. We work out simpler version the where system interact separately for duration long enough establish equilibrium. efficiency, $\...

We study a feedback control version of the flashing Brownian ratchet, in which the application of the flashing potential depends on the state of the particles to be controlled. Taking the view that the ratchet acts as a Maxwell’s demon, we study the relationship that exists between the performance of the demon as a rectifier of random motion and the amount of information gathered by the demon t...

carbon capture and storage (ccs) systems have relevant energy consumption associated with the co2 capture process. it causes an energy efficiency reduction that diminishes the economic interests and increases the technical uncertainty of these systems. with the objective of improving the system perform-ance and reducing thermodynamic inefficiencies, the exergy analysis has been traditionally ap...

We present very sharp separation results for Turing machine sublogarithmic space complexity classes which are of the form: For any, arbitrarily slow growing, recursive nondecreasing and unbounded function s there is a k ∈ N and an unary language L such that L ∈ SPACE(s(n) + k) \ SPACE(s(n − 1)). For a binary L the supposition lim s = ∞ is sufficient. The witness languages differ from each langu...

Consider the integer lattice L = Z2. For some m ≥ 4, let us color each column of this lattice independently and uniformly into one of m colors. We do the same for the rows, independently from the columns. A point of L will be called blocked if its row and column have the same color. We say that this random configuration percolates if there is a path in L starting at the origin, consisting of ri...

Vacuum-assisted venous drainage (VAVD) to enhance venous return during cardiopulmonary bypass (CPB) was described as early as 1958 but was not widely used until the late 1990s. VAVD was initially used to facilitate the use of smaller cannulas with ministernotomy but was increasingly used to allow reduction in CPB circuit size while maintaining CPB flow rates. This innovation was made without pl...

A number of tricky problems in probability are discussed, having in common one or more infinite sequences of coin tosses, and a representation as a problem in dependent percolation. Three of these problems are of ‘Winkler’ type, that is, they ask about what can be achieved by a clairvoyant demon.

...................................................................................................................... iii ACKNOWLEDGEMENTS ............................................................................................... iv DEDICATION .................................................................................................................... v INTRODUCTION...................