Results 241 to 250 of about 76,852 (297)

Virtual Walls in Microchannels

2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006
Microfluidic channels were studied, in which the surface is modified from a solid/liquid interface into solid/liquid and air/liquid alternating interface, creating the equivalent of a superhydrophobic surface on the interior of the channel. The composite microchannel can be easily fabricated using embossing or cast molding of PDMS.
Wei Xu, Hong Xue, Mark Bachman, G. P. Li
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Microchannels in Prediabetes

1988
In humans, diabetic microangiopathy affects arterioles, capillaries and venules throughout the body. This fact signifies the unity of the vascular occurrences. The pathology of the microchannels functional or structural, has a variable dynamic natural history where localized abnormalities are commonly found at different stages of their development.
R A, Camerini-Davalos, A S, Reddi, J M, Bloodworth, C A, Velasco   +3 more
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Acoustophoresis in shallow microchannels

Journal of Colloid and Interface Science, 2010
Acoustophoretic (AP) motion of spherical polystyrene particles in a steady pressure driven flow is investigated in shallow microchannels, where the channel height is comparable to the particle diameter. Particle trajectories at different ultrasonic actuation amplitudes are extracted by a particle tracking algorithm.
Mehti, Koklu, Ahmet Can, Sabuncu, Ali, Beskok   +2 more
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DNA Dynamics in a Microchannel

Physical Review Letters, 2003
An extended Brownian dynamics simulation method is used to characterize the dynamics of long DNA molecules flowing in microchannels. The relaxation time increases due to confinement in agreement with scaling predictions. During flow the molecules migrate toward the channel center line, and thereby segregate according to molecular weight.
Richard M, Jendrejack, Eileen T, Dimalanta, David C, Schwartz, Michael D, Graham, Juan J, de Pablo   +4 more
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Surface Conduction in a Microchannel

Langmuir, 2018
Ionic current through a microchannel has drawn significant attention not only for fundamental electrokinetic research but also for the development of novel micro/nanofluidic applications. Among various ion transport mechanisms, surface conduction, which is a predominant mechanism in micro/nanofluidic devices, has been theoretically characterized based ...
Seoyun Sohn, Inhee Cho, Soonhyun Kwon, Hyomin Lee, Sung Jae Kim   +4 more
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Electroosmotic Flow in Microchannels

Journal of Colloid and Interface Science, 2001
The electroosmotic flow induced by an applied electrostatic potential field through microchannels between two parallel plates and a 90 degrees bend is analyzed in this work. A nonlinear, two-dimensional Poisson-Boltzmann equation governing the electrical double-layer field and the Laplace equation governing the electrostatic field distribution in ...
R.-J., Yang, L.-M., Fu, Y.-C., Lin
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Electroosmotic mixing in microchannels

Lab on a Chip, 2004
Mixing is an essential, yet challenging, process step for many Lab on a Chip (LOC) applications. This paper presents a method of mixing for microfluidic devices that relies upon electroosmotic flow. In physical tests and in computer simulations, we periodically vary the electric field with time to mix two aqueous solutions.
Ian, Glasgow, John, Batton, Nadine, Aubry   +2 more
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Ultrasonic agitation in microchannels

Analytical and Bioanalytical Chemistry, 2004
This paper describes an acoustic method for inducing rotating vortex flows in microchannels. An ultrasonic crystal is used to create an acoustic standing wave field in the channel and thus induce a Rayleigh flow transverse to the laminar flow in the channel. Mixing in microchannels is strictly diffusion-limited because of the laminar flow, a transverse
Martin, Bengtsson, Thomas, Laurell
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