Results 21 to 30 of about 1,633 (176)

Mathematical Modeling of the Phenomenon of Space-Charge Breakdown in the Galvanostatic Mode in the Section of the Electromembrane Desalination Channel [PDF]

Membranes, 2021
One of the ways to increase the efficiency of the desalination process in membrane systems is to use intensive current modes. Recently, the phenomenon of space-charge breakdown was theoretically described for desalination under intensive current modes ...
Aminat Uzdenova, Makhamet Urtenov
doaj   +2 more sources

Modulation of Localized States in Electroconvection [PDF]

Physical Review E, 2002
We report on the effects of temporal modulation of the driving force on a particular class of localized states, known as worms, that have been observed in electroconvection in nematic liquid crystals.
A. Bayliss, A. Groisman, A. Joets, A.J. Simon, B.A. Malomed, C. Crawford, Carina Kamaga, D. Bensimon, D. Walgraef, E. Bodenschatz, E. Moses, G.D. Granzow, H. Herrero, H. Riecke, H. Riecke, H. Riecke, H. Riecke, H. Sakaguchi, H.R. Brand, I. Rehberg, I. Rehberg, J.P. Gollub, K. Lerman, L. Kramer, L. Kramer, M. de la Torre Juárez, M. Dennin, M. Dennin, M. Dennin, M.C. Cross, Michael Dennin, O. Lioubashevski, O. Thual, P. Umbanhowar, R. Heinrichs, R.J. Wiener, S. Kai, S. Rasenat, U. Bisang, U. Finkenzeller, V. Hakim, Y. Tu   +41 more
core   +3 more sources

Self-organized angleworm-like and centipede-like patterns in ac-driven electroconvection of nematic liquid crystals [PDF]

Scientific Reports
We report localized electroconvection (EC) discovered in nematic liquid crystals (NLC), which resembles life-like angleworms (AW) and centipedes (CP) in nature. In the presence or absence of superposed noise on an ac field, such localized EC patterns are
Jong-Hoon Huh
doaj   +2 more sources

Manipulating conductivity and noise for transitioning between stochastic and inverse stochastic resonances in liquid–crystal electroconvection [PDF]

Scientific Reports
Noise can play a constructive role in nature and various engineering systems. Over the past four decades, noise-induced stochastic resonances (SRs) have been extensively documented, showing enhancement in system performance.
Jong-Hoon Huh, Takumu Higashi, Yuki Sato
doaj   +2 more sources

Fluctuation and Dissipation in Liquid Crystal Electroconvection [PDF]

Physical Review Letters, 2001
In this experiment a steady state current is maintained through a liquid crystal thin film. When the applied voltage is increased through a threshold, a phase transition is observed into a convective state characterized by the chaotic motion of rolls ...
A. Joets, E. Bodenshatz, F. Bonetto, G. Gallavotti, G. Gallavotti, G. Gallavotti, Hamid Kellay, I. Rehberg, J. Kurchan, J. L. Lebowitz, J. T. Gleeson, L. E. Reichl, M. C. Cross, M. Dennin, P. D. de Gennes, S. Kai, S. T. Bramwell, Walter I. Goldburg, Yadin Y. Goldschmidt   +18 more
core   +11 more sources

Electroconvective Instability in Water Electrolysis: An Evaluation of Electroconvective Patterns and Their Onset Features [PDF]

Physical Review Applied, 2021
In electrochemical systems, an understanding of the underlying transport processes is required to aid in their better design. This includes knowledge of possible near-electrode convective mixing that can enhance measured currents. Here, for a binary acidic electrolyte in contact with a platinum electrode, we provide evidence of electroconvective ...
Nakul Pande, Jeffery A. Wood, Guido Mul, Detlef Lohse, Bastian T. Mei, Dominik Krug   +5 more
openaire   +2 more sources

Time-Dependent Two-Dimensional Model of Overlimiting Mass Transfer in Electromembrane Systems Based on the Nernst–Planck, Displacement Current and Navier–Stokes Equations

Computation, 2023
Electromembrane processes underlie the functioning of electrodialysis devices and nano- and microfluidic devices, the scope of which is steadily expanding.
Aminat Uzdenova
doaj   +1 more source

Equilibrium Electroconvective Instability [PDF]

Physical Review Letters, 2015
Since its prediction 15 years ago, hydrodynamic instability in concentration polarization at a charge-selective interface has been attributed to nonequilibrium electro-osmosis related to the extended space charge which develops at the limiting current. This attribution had a double basis. On the one hand, it has been recognized that neither equilibrium
I, Rubinstein, B, Zaltzman
openaire   +2 more sources

On electroconvection in porous media

Indiana University Mathematics Journal, 2023
We address existence, uniqueness and analyticity of solutions of an electroconvection model in porous media.
Abdo, Elie, Ignatova, Mihaela
openaire   +3 more sources

Domain Coarsening in Electroconvection [PDF]

Physical Review Letters, 2001
Physical Review ...
Purvis, Lynne, Dennin, Michael
openaire   +3 more sources