Stability of the electroosmotic flow of a two-layer electrolyte-dielectric system with external pressure gradient⋆

Gorbacheva, E. V.; Ganchenko, G. S.; Demekhin, E. A.

doi:10.1140/epje/i2018-11650-7

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Several modes of the body behavior depending on the rate of the cavity rotation, i.e., the ratio of the centrifugal force of inertia and the gravity, are detected. 10) Stability of the electro-osmotic flow of electrolyte-dielectric viscous liquids under the influence of the DC and AC electric fields along with the external pressure gradient is studied in [10]. It is found that in the DC case, the external pressure could either stabilize or destabilize the flow depending on the relative directions of the electro-osmotic flow and the pressure-driven flow.…”

Section: )mentioning

confidence: 99%

Topical Issue on Non-equilibrium processes in multicomponent and multiphase media

2018

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Most of continuous media participating in natural and technological processes are multicomponent and/or multiphase systems. The physical principles behind the phenomenology of non-equilibrium processes in such media are still not fully understood. To develop a better understanding, a continuous interaction between theory, experiments and numerical simulations is needed. This Topical Issue on non-equilibrium processes in multicomponent and multiphase media aims at contributing to this effort. The areas of interest for this Topical Issue include hydrodynamic instability and transition to complex non-periodic and chaotic regimes; generation and evolution of large-scale vortex structures in turbulent flows; heat and mass transfer in atmosphere and ocean; hydrodynamics of systems with fluid interfaces; formation of dynamic and dissipative structures at interfaces; thermodiffusion and thermophoresis in molecular fluids and colloidal suspensions; acoustic and wave processes in inhomogeneous media; non-equilibrium processes in complex fluids and in disperse media. The present Topical Issue also contains papers that were presented at the International Symposium Non-Equilibrium Processes in Continuous Media that was held in Perm (Russia) from May 15 to May 17, 2017. The current Topical Issue Non-equilibrium processes in multicomponent and multiphase media contains a total of thirteen papers. In the following we provide a brief description of the accepted papers in an order that mirrors the publication dates.

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confidence: 99%

Topical Issue on Non-equilibrium processes in multicomponent and multiphase media

2018

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“…The commonly used microfluidic non-mechanical actuation methods mainly include electroosmotic [15,16,17], magnetic [18,19], optical [20,21,22], thermal [23,24], and piezoelectric [25,26,27]. As a common microfluidic driving method, piezoelectric actuation has been widely used due to its low cost, easy operation, and high efficiency [28,29].…”

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confidence: 99%

Performance Analysis of a Microfluidic Pump Based on Combined Actuation of the Piezoelectric Effect and Liquid Crystal Backflow Effect

Guan

2019

Micromachines

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A novel combined actuation method based on the piezoelectric effect and liquid crystal backflow effect is proposed in this paper. The coupling mechanism of a piezoelectric transducer (PZT) and liquid crystal (LC) in a combined driving mode is analyzed, and the governing equations of electromechanical coupling based on inverse piezoelectric effect and the classical Leslie–Ericksen backflow equation are modified under combined driving method. The new multifield coupling dynamic equations for numerical analysis is established. Experimentally, a sandwiched micropump was manufactured and sealed with wet etching technology on a glass wafer. A testing platform was built to analyze the particles motion and the flow rates were measured with both single PZT or LC actuation and combined actuation. Comparing the results of the numerical analysis and experimental testing of the flow rate and LC molecule motion under different driving voltages and frequencies, the performance of the PZT/LC combined driving is found to be superior to that of the single driving mode (PZT or LC driving) under the same driving conditions. Moreover, the new combined driving mode overcome the disadvantages of single driving mode and enhance the driving efficiency significantly. The simulation results are in good agreement with the experimental data. The maximum flow rate of the micropump achieved was 4.494 μL/min with combined driving method.

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Stability of the electroosmotic flow of a two-layer electrolyte-dielectric system with external pressure gradient⋆

Cited by 2 publications

References 6 publications

Topical Issue on Non-equilibrium processes in multicomponent and multiphase media

Topical Issue on Non-equilibrium processes in multicomponent and multiphase media

Performance Analysis of a Microfluidic Pump Based on Combined Actuation of the Piezoelectric Effect and Liquid Crystal Backflow Effect

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