A Note on Solid-State Maxwell DemonStarting from 2002, at least two kinds of laboratory-testable, solid-state Maxwell demons have been proposed that utilize the electric field energy of an open-gap n-p junction and that seem to…Germano D'Abramo·Nov 17, 2010SaveLearn
Surface Curvature-Induced Directional Movement of Water DropletsHere we report a surface curvature-induced directional movement phenomenon, based on molecular dynamics simulations, that a nanoscale water droplet at the outer surface of a graphene cone always…Cunjing Lv, Chao Chen, Yajun Yin et al.·Nov 16, 2010SaveLearn
On the contribution of the horizontal sea-bed displacements into the tsunami generation processThe main reason for the generation of tsunamis is the deformation of the bottom of the ocean caused by an underwater earthquake. Usually, only the vertical bottom motion is taken into account while…Denys Dutykh, Dimitrios Mitsotakis, Leonid Chubarov et al.·Nov 8, 2010SaveLearn
Exergy analysis of magnetic refrigerationOne of the main challenges of the industry today is to face its impact on global warming considering that the greenhouse effect problem is not be solved completely yet. Magnetic refrigeration…Umberto Lucia·Nov 7, 2010SaveLearn
Classical and Quantum Interpretations Regarding Thermal Behavior in a Coordinate Frame Accelerating Through Zero-Point RadiationA relativistic classical field theory with zero-point radiation involves a vacuum corresponding to a scale-invariant spectrum of random classical radiation in spacetime with the overall constant…Timothy H. Boyer·Nov 5, 2010SaveLearn
Influence of positional correlations on the propagation of waves in a complex medium with polydisperse resonant scatterersWe present experimental results on a model system for studying wave propagation in a complex medium exhibiting low frequency resonances. These experiments enable us to investigate a fundamental…V. Leroy, A. L. Strybulevych, J. H. Page et al.·Oct 29, 2010SaveLearn
A blackbody is not a blackboxWe discuss carefully the blackbody approximation, stressing what it is (a limit case of radiative transfer), and what it is not (the assumption that the body is perfectly absorbing, i.e. black).…Matteo Smerlak·Oct 27, 2010SaveLearn
Bifurcations in the optimal elastic foundation for a buckling columnWe investigate the buckling under compression of a slender beam with a distributed lateral elastic support, for which there is an associated cost. For a given cost, we study the optimal choice of…Daniel Rayneau-Kirkhope, Robert Farr, K. Ding et al.·Oct 26, 2010SaveLearn
The Poisson-Boltzmann Theory for The Two-Plates Problem: Some Exact ResultsThe general solution to the nonlinear Poisson-Boltzmann equation for two parallel charged plates, either inside a symmetric elecrolyte, or inside a 2q:-q asymmetric electrolyte, is found in terms of…Xiangjun Xing·Oct 24, 2010SaveLearn
The Poisson-Boltzmann Theory for Two Parallel Uniformly Charged PlatesWe solve the nonlinear Poisson-Boltzmann equation for two parallel and likely charged plates both inside a symmetric elecrolyte, and inside a 2 : 1 asymmetric electrolyte, in terms of Weierstrass…Xiangjun Xing·Oct 24, 2010SaveLearn
Softening induced instability of a stretched cohesive granular layerWe report on a cellular pattern which spontaneously forms at the surface of a thin layer of a cohesive granular material submitted to in-plane stretching. We present a simple model in which the…Hector Alarcon, Osvanny Ramos, Loïc Vanel et al.·Oct 23, 2010SaveLearn
Non-holonomic Constraint Force PostulatesThe extended Hamilton's Principle and other methods proposed to handle non-holonomic constraints are considered. They dont agree with each other. By looking at its consistency with…H. M. Bharath·Oct 19, 2010SaveLearn
Double layer in ionic liquids: Overscreening vs. crowdingWe develop a simple Landau-Ginzburg-type continuum theory of solvent-free ionic liquids and use it to predict the structure of the electrical double layer. The model captures overscreening from…Martin Z. Bazant, Brian D. Storey, Alexei A. Kornyshev·Oct 18, 2010SaveLearn
Duality of force laws and Conformal transformationsAs was first noted by Isaac Newton, the two most famous ellipses of classical mechanics, arising out of the force laws F~r and F~1/r2, can be mapped onto each other by changing the location of…Dawood Kothawala·Oct 11, 2010SaveLearn
The Electromagnetic Fields of a Spinning Spherical Shell of ChargeWe consider the problem of a rotating charged spherical shell of radius a carrying an axially symmetric distribution of charge. We give the interior and exterior solutions to this problem for…Stanislaw Olbert, John W. Belcher·Oct 10, 2010SaveLearn
Comparison of different forms for the "spin" and "orbital" components of the angular momentum of lightWe compare three attempts that have been made to decompose the angular momentum of the electromagnetic field into components of an "orbital" and "spin" nature. All three expressions…A. M. Stewart·Oct 6, 2010SaveLearn
Three Balls Problem Revisited - On the Limitations of Event-Driven ModelingIf a tennis ball is held above a basket ball with their centers vertically aligned, and the balls are released to collide with the floor, the tennis ball may rebound at a surprisingly high speed. We…Patric Mueller, Thorsten Poeschel·Sep 30, 2010SaveLearn
Tidal instability in a rotating and differentially heated ellipsoidal shellThe stability of a rotating flow in a triaxial ellipsoidal shell with an imposed temperature difference between inner and outer boundaries is studied numerically. We demonstrate that (i) a stable…David Cébron, Pierre Maubert, Michael Le Bars·Sep 30, 2010SaveLearn
A systematic numerical study of the tidal instability in a rotating triaxial ellipsoidThe full non-linear evolution of the tidal instability is studied numerically in an ellipsoidal fluid domain relevant for planetary cores applications. Our numerical model, based on a finite element…David Cébron, Michael Le Bars, Justin Leontini et al.·Sep 30, 2010SaveLearn
Thermal noise enginesElectrical heat engines driven by the Johnson-Nyquist noise of resistors are introduced. They utilize Coulomb's law and the fluctuation-dissipation theorem of statistical physics that is the…Laszlo B. Kish·Sep 29, 2010SaveLearn
Boundary Effects on the Determination of Metamaterial Parameters from Normal Incidence Reflection and Transmission MeasurementsA method is described for the determination of the effective electromagnetic parameters of a metamaterial based only on external measurements or simulations, taking boundary effects at the interfaces…Sung Kim, Edward F. Kuester, Christopher L. Holloway et al.·Sep 29, 2010SaveLearn
The self-stabilising dynamics of bicyclesWe analyse the classical problem of the stability of bicycles when moving quickly and upright. Developing a lean causes the front wheel to turn thereby setting the bicycle instantaneously into…Mark Warner, Daniel Corbett·Sep 28, 2010SaveLearn
Tipping of a classical point mass pendulum: Role of statistical fluctuationsThe behavior of a stationary inverted point mass pendulum pivoted at its lower end in a gravitational potential is studied under the influence of statistical fluctuations. It is shown using purely…Abhishodh Prakash·Sep 28, 2010SaveLearn
Electrodynamics in accelerated frames revisitedMaxwell's equations are formulated in arbitrary moving frames by means of tetrad fields, which are interpreted as reference frames adapted to observers in space-time. We assume the existence of a…J. W. Maluf, S. C. Ulhoa·Sep 20, 2010SaveLearn
Dynamical fluctuations in classical adiabatic processes: General description and their implicationsDynamical fluctuations in classical adiabatic processes are not considered by the conventional classical adiabatic theorem. In this work a general result is derived to describe the intrinsic…Qi Zhang, Jiangbin Gong, C. H. Oh·Sep 19, 2010SaveLearn