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Wetting electro

Electro wet drum separators, 15 443 Electrowetting, in microfluidics, 26 962 Electrowinning, 9 637-642 14 760 16 154 from aqueous solutions, 9 637-639 ... [Pg.310]

R. B., Electro wetting-based actuation for integrated microfluidics, Lab Chip 2002,... [Pg.276]

Electro-wetting stands for a group of techniques in which wetting is improved by the application of an electric field, leading to the lowering of the interfacial tension according to 1.1.3.6]... [Pg.662]

Other mechanisms may be considered. For example, decrease in the active electrode surface due to a change in the wettability by electro-wetting or the formation of an electrically insulating layer on the electrode. These mechanisms are not discussed further in the text due to the lack of knowledge and experimental evidences to analyse them. [Pg.81]

Digital microfluidic architecture is under software-driven electronic control, eliminating the need for mechanical tubes, pumps, and valves that are required for continuous-flow systems. The compatibility of each chemical substance with the electro-wetting platform must be determined initially. Compatibility issues include the following (1) Does the liquid s viscosity and surface tension allow for droplet dispensing and transport by electrowetting ... [Pg.296]

E. Seyrat and R.A. Hayes, Amorphous fluoropolymers as insulators for reversible low-voltage electro-wetting, J Appl Phys 90, 1383-1386 (2001). [Pg.301]

Figure 15. The electrowetting effect. (According to Mugele et al. [260].) (a) If a voltage V is applied between a liquid and an electrode separated by an insulating layer, the contact angle of the liquid-solid interface is decreased and the droplet flattens , (b) Hydrophobic surfaces enhance the effect of electro wetting. For electrowetting on dielectrics (EWOD) several individual addressable control electrodes (here on the bottom) and a large counter-electrode are used. The droplet is pulled to the charged electrodes. Figure 15. The electrowetting effect. (According to Mugele et al. [260].) (a) If a voltage V is applied between a liquid and an electrode separated by an insulating layer, the contact angle of the liquid-solid interface is decreased and the droplet flattens , (b) Hydrophobic surfaces enhance the effect of electro wetting. For electrowetting on dielectrics (EWOD) several individual addressable control electrodes (here on the bottom) and a large counter-electrode are used. The droplet is pulled to the charged electrodes.
H. Ren, R. B. Fair, and M. G. Pollack, Automated on-chip droplet dispensing with volume control by electro-wetting actuation and capacitance metering, Sensors and Actuators B-Chemical, vol. 98, no. 2-3, pp. 319-327, Mar. 2004. [Pg.374]

Figure 1. Schematic of electro wetting actuation device with optical detection. Figure 1. Schematic of electro wetting actuation device with optical detection.
Figure 2. Absorbance of the reaction product with respect to the initial concentration of TNT on the electro wetting chip. Figure 2. Absorbance of the reaction product with respect to the initial concentration of TNT on the electro wetting chip.
We have also performed a colorimetric experiment with DNT in DMSO and KOH in DI water on the same electro wetting chip. However, we have not performed quantitative measurements nor determined the stability of the reaction. Further experiments are needed to assess the stability of the reaction and establish the linear range of detection for DNT. Also, experiments need to be performed on nitroaromatic samples extracted from soil and for samples in water to establish the suitability of a digital microfluidic system for field screening of nitroaromatics. [Pg.286]

Jones TB (2002) On the relationship of dielectrophoresis and electro wetting. Langmuir 18 4437-4443... [Pg.641]

Ren H, Fair RB, Pollack MG, Shaughnessy EJ (2002) Dynamics of electro-wetting droplet transport. Sens Actuators B 87 201-206... [Pg.891]

Yeo LY, Chang HC (2005) Static and spontaneous electro wetting. Mod Phys Lett B 19 549-569... [Pg.973]

Droplet microfluidics Electrowetting on dielectric (EWOD) Electro wetting on insulator-coated electrodes (EICE)... [Pg.974]

Beni G, Hackwood S (1981) Electro-wetting displays. Appl Phys Lett 38 207-209... [Pg.991]

A physical model describing the electro-optic behavior of switchable optical elements based on electro wetting. J Appl Phys 96 6267-6271... [Pg.991]

Digital microfluidics (DMF) is a technique in which droplets are moved on a substrate with patterned electrodes by means of electrowetting and/or dielectrophoretic forces [Digital Microfluidics, Applications Based on Electro wetting]. DMF has the capability to process several analytes at the same time and has been used to characterize proteomic samples and form arrays of spots for analysis by MALDI-MS. In particular. Moon et al. [14] used DMF to perform in situ sample cleanup on an open substrate, after which, samples were interrogated by... [Pg.1433]

Control of electrowetting channels requires precise dispensing of volumes and programmed fluid transport. Dispensing any quantity of fluid in the form of droplets or electro wetting channels of a predetermined volume requires manipulating... [Pg.3427]

Electro wetting, superhydrophobic, nanostructures, nanofibers, nanotubes, wetting... [Pg.449]

Techniques for Reversible Electro wetting on Superhydrophobic Surfaces... [Pg.460]

B. Berge and J. Peseux, "Variable focal lens controlled by an external voltage An application of electro wetting," The European Physical Journal E, vol. 3, pp. 159 -163,2000. [Pg.142]

There are two basic platforms for droplet microreactors the planar platform and the in-channel continuous platform. In a planar platform, the droplet can move freely on a planar surface, while the motion of the droplet in an in-channel continuous platform is restricted by microchannels. The actuation of droplets in a planar platform is based on nonmechanical concepts such as electro wetting, thermocapillary forces, and magnetic forces. Most inchannel continuous platforms rely on pressure to move the droplets. [Pg.424]

Mechanical pumping Micromechanical pumps are usually based on the movement of a membrane, which results in periodic delivery of a fluid. The actuation schemes utilized for moving the membrane of a pump include piezoelectric, electrostatic, thermopneumatic, pneumatic, and electromagnetic devices, and shape memory alloys and electro wetting. The resulting fluid motion is pulsed, not continuous. The rotary displacement micropump is an example of a mechanical pump not based on membrane movement. External syringe... [Pg.1200]

See other pages where Wetting electro is mentioned: [Pg.81]    [Pg.307]    [Pg.137]    [Pg.71]    [Pg.73]    [Pg.282]    [Pg.209]    [Pg.1477]    [Pg.753]    [Pg.973]    [Pg.986]    [Pg.986]    [Pg.1438]    [Pg.2479]    [Pg.2587]    [Pg.3175]    [Pg.450]    [Pg.1154]    [Pg.1154]    [Pg.300]    [Pg.467]    [Pg.609]    [Pg.858]   
See also in sourсe #XX -- [ Pg.142 ]



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