Results 21 to 30 of about 6,238 (217)
Flexoelectric Fracture-Ratchet Effect in Ferroelectrics [PDF]
Physical Review Letters, 2019 The propagation front of a crack generates large strain gradients and it is therefore a strong source of gradient-induced polarization (flexoelectricity). Herein, we demonstrate that, in piezoelectric materials, a consequence of flexoelectricity is that crack propagation is helped or hindered depending on whether it is parallel or antiparallel to the ...
Cordero-Edwards, Kumara +4 more
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Displacement Effect and Ratchet Effect: Testing of Two Alternative Hypotheses
SAGE Open, 2021 This article empirically tests the displacement effect of Peacock and Wiseman (PW) and the ratchet effect of Bird, both of which are alternatives to Wagner’s law on the growth of public expenditure.
Manuel Jaén-García
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Thermal Ratchet Effect in Confining Geometries [PDF]
Entropy, 2017 The stochastic model of the Feynman–Smoluchowski ratchet is proposed and solved using generalization of the Fick–Jacobs theory. The theory fully captures nonlinear response of the ratchet to the difference of heat bath temperatures. The ratchet performance is discussed using the mean velocity, the average heat flow between the two heat reservoirs and ...
Viktor Holubec +6 more
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Physical Review Research, 2022 Nonequilibrium transportation of particles through a restricted space (such as porous media or narrow channels) significantly differs from free space. With a simple model of two types of particles competing to transport via a passive single-lane channel ...
Chase Slowey, Zhiyue Lu
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Controlling the Ratchet Effect for Cold Atoms [PDF]
Physical Review Letters, 2008 Low-order quantum resonances manifested by directed currents have been realized with cold atoms. Here we show that by increasing the strength of an experimentally achievable delta-kicking ratchet potential, quantum resonances of a very high order may naturally emerge and can induce larger ratchet currents than low-order resonances, with the underlying ...
Kenfack, A., Gong, J., Pattanayak, A.K.
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Mutational meltdown in primary endosymbionts: selection limits Muller's ratchet. [PDF]
PLoS ONE, 2009 Primary bacterial endosymbionts of insects (p-endosymbionts) are thought to be undergoing the process of Muller's ratchet where they accrue slightly deleterious mutations due to genetic drift in small populations with negligible recombination rates.
Julie M Allen +4 more
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Ratchet Effects in Luttinger Liquids [PDF]
, 2006 We investigate a one-dimensional electron liquid with two point scatterers of different strength. In the presence of electron interactions, the nonlinear conductance is shown to depend on the current direction. The resulting asymmetry of the transport characteristic gives rise to a ratchet effect, i.e., the rectification of a dc current for an applied ...
Feldman, D. E. +2 more
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Spontaneous Ratchet Effect in a Granular Gas [PDF]
Physical Review Letters, 2004 4 pages, 5 figures; Fig.
van der Meer, D +3 more
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Magnus-induced ratchet effects for skyrmions interacting with asymmetric substrates
New Journal of Physics, 2015 We show using numerical simulations that pronounced ratchet effects can occur for ac driven skyrmions moving over asymmetric quasi-one-dimensional substrates.
C Reichhardt +2 more
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Systemic Risk and the Refinancing Ratchet Effect [PDF]
SSRN Electronic Journal, 2009 The confluence of three trends in the U.S. residential housing market—rising home prices, declining interest rates, and near-frictionless refinancing opportunities—led to vastly increased systemic risk in the financial system. Individually, each of these trends is benign, but when they occur simultaneously, as they did over the past decade, they impose
Khandani, Amir E. +2 more
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