Results 181 to 190 of about 5,752 (209)

Arrayed electrowetting microwells

Applied Physics Letters, 2008
Colored oils and aqueous solutions have been electromechanically pumped in and out of arrayed microwells. The microwells comprised pyramidal pits in Si substrates that were coated with an aluminum electrode and a hydrophobic dielectric. These substrates were then suspended between volumes of water and oil.
K. Zhou, J. Heikenfeld
openaire   +1 more source

Electrowetting-based optics

SPIE Proceedings, 2005
Electrowetting is electrostatic manipulation of liquids. It can be used to displace and deform volumes of polar liquids. A very promising application area is optics. The surface of a volume of liquid can be used as a tunable lens and displacement of the liquid can change the refraction, diffraction or transmission of light when passing through the ...
S. Kuiper, B. H. W. Hendriks, R. A. Hayes, B. J. Feenstra, J. M. E. Baken   +4 more
openaire   +1 more source

Electrowetting Dynamics of Microfluidic Actuation

Langmuir, 2005
When voltage is suddenly applied to vertical, parallel dielectric-coated electrodes dipped into a liquid with finite conductivity, the liquid responds by rising up to reach a new hydrostatic equilibrium height. On the microfluidic scale, the dominating mechanism impeding this electromechanically induced actuation appears to be a dynamic friction force ...
K-L, Wang, T B, Jones
openaire   +2 more sources

Electrowetting on liquid-infused membrane for flexible and reliable digital droplet manipulation and application

Sensors and Actuators B: Chemical, 2019
Droplet manipulation is a critical step for microfluidic applications. We present digital microfluidic devices based on electrowetting-on-dielectric (EWOD) for reliable and repeatable droplet manipulation.
Jieping Cao, Q. An, Zhenping Liu, M. Jin, Zhibin Yan, Weijie Lin, Lin Chen, Pengfei Li, Xin Wang, Guofu Zhou, L. Shui   +10 more
semanticscholar   +1 more source

Micropumping by Electrowetting

Heat Transfer: Volume 3 — Fluid-Physics and Heat Transfer for Macro- and Micro-Scale Gas-Liquid and Phase-Change Flows, 2001
Abstract This paper introduces the recent effort to use surface tension in MEMS, especially, to use electrowetting for efficient pumping in microfluidics. Importance of surface tension in microscale is explained, and examples of utilizing it to design microdevices are presented. Development of several devices employing different types of
openaire   +1 more source

Cheerios Effect Controlled by Electrowetting

Langmuir, 2015
The Cheerios effect is a common phenomenon in which small floating objects are either attracted or repelled by the sidewall due to capillary interaction. This attractive or repulsive behavior is highly dependent on the slope angles (angles of the interface on the wall or floating object with respect to a horizontal line) that can be mainly controlled ...
Junqi, Yuan, Jian, Feng, Sung Kwon, Cho
openaire   +2 more sources

Electrowetting — From statics to dynamics

Advances in Colloid and Interface Science, 2014
More than one century ago, Lippmann found that capillary forces can be effectively controlled by external electrostatic forces. As a simple example, by applying a voltage between a conducting liquid droplet and the surface it is sitting on we are able to adjust the wetting angle of the drop.
Longquan, Chen, Elmar, Bonaccurso
openaire   +2 more sources

Enhancing mechanical strength of carbon fiber-epoxy interface through electrowetting of fiber surface

Composites Part B: Engineering, 2022
Xiaoming Chen, Kaiqiang Wen, Chunjiang Wang, Si-Chao Cheng, Shuo Wang, Hechuan Ma, Hongmiao Tian, Jie Zhang, Xiangming Li, J. Shao   +9 more
semanticscholar   +1 more source

Electrowetting of a Soft Elastic Gel.

ACS Macro Letters, 2023
Zijun Wang, Yujia Dong, Yue Zheng, Yang Wang, Chenghai Li, Yuhang Hu, S. Cai   +6 more
semanticscholar   +1 more source

Electrowetting-based microoptics

2016
This Chapter discussed the following: brief history of electrowetting; surface tension; contact angle; liquid lens focal length; tunable liquid microlens; electrowetting-based microlens on a flexible curvilinear surface; arrayed electrowetting prism and switchable microlens; electrowetting-controlled liquid mirror; electrowetting-driven optical switch ...
null Chenhui Li, null Hongrui Jiang
openaire   +1 more source