نتایج جستجو برای: electroosmotic permeability

تعداد نتایج: 51009  

Journal: :Mathematical Problems in Engineering 2021

This research deals with the mathematical model for development of peristaltic principle combination pressure and electroosmotic flow (EOF) ionic liquid across microchannels electrokinetic effects. For thermomechanical dynamics, convective conditions on boundary mass heat transfer at walls channel are quantified. microchannel, a porous structure is presumed. Soret, Dufour, Joule heating also li...

Journal: :Biophysical journal 2005
Aleksij Aksimentiev Klaus Schulten

alpha-Hemolysin of Staphylococcus aureus is a self-assembling toxin that forms a water-filled transmembrane channel upon oligomerization in a lipid membrane. Apart from being one of the best-studied toxins of bacterial origin, alpha-hemolysin is the principal component in several biotechnological applications, including systems for controlled delivery of small solutes across lipid membranes, st...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2013
j. jamaati h. niazmand m. renksizbulut

a numerical study of 3d electrokinetic flows through micromixers was performed. the micromixers considered here consisted of heterogeneous rectangular microchannels with prescribed patterns of zeta-potential at their walls. numerical simulation of electroosmotic flows within heterogeneous channels requires solution of the navier-stokes, ernest-plank and species concentration equations. it is kn...

Journal: :Chemical communications 2007
Charlotte Wiles Paul Watts

We present herein a micro reactor set-up that enables parallel syntheses to be performed under electroosmotic flow conditions.

2010
J. L. Chen W. H. Shih

T This paper reports the mixing performance of an AC electroosmotic micromixer based on the three-dimensional extensional flow generated by a face-to-face, asymmetric pair of planar electrodes. This work represents the first successful use of such an asymmetric electrode pair in an AC electroosmotic micromixer. Due to the highly 3dimentional flow pattern generated by the face-to-face electrode ...

Journal: :Journal of colloid and interface science 2007
Juan G Santiago

This note provides a few comments on the conditions required for similitude between velocity and electric field in electroosmotic flows. The velocity fields of certain electroosmotic flows with relatively thin electric double layers (EDLs) are known to be irrotational in regions outside of the EDL. Under restricted conditions, the velocity field, V , can be expressed in terms of the electric fi...

Journal: :Journal of colloid and interface science 2004
M H Oddy J G Santiago

We have developed a method for measuring the electrophoretic mobility of submicrometer, fluorescently labeled particles and the electroosmotic mobility of a microchannel. We derive explicit expressions for the unknown electrophoretic and the electroosmotic mobilities as a function of particle displacements resulting from alternating current (AC) and direct current (DC) applied electric fields. ...

Journal: :Faraday discussions 2017
Elisabeth Smela

The field of soft robots would benefit from electrically controlled contractile actuators in the form of fibers that achieve a strain of 20% in less than a second while exerting high force. This work explores possible designs for achieving this goal using self-contained electroosmotic fluid pumping within a tube-shaped structure. The most promising configuration is a combination of a bellows an...

2010
Ingrid Hoek Andrea Bubendorfer Tim Kemmitt W. Mike Arnold

This paper reports on a rapid new method for in-situ sol-gel deposition of silica layers in PDMS microchannels. A two-step process is used; first allowing TEOS to diffuse briefly into the channel, followed by acid catalysed hydrolysis and condensation. The silica coating results in an increased and stabilised electroosmotic flow. With this novel method there is no need for pretreatment of the m...

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