Nanoparticles modulate contact angle hysteresis in electrowetting
Sumit Kumar, Pawan Kumar, Sunando DasGupta, Suman Chakraborty
TL;DR
This study investigates how adding nanoparticles to droplets affects contact angle hysteresis in electrowetting, revealing that nanoparticle concentration can be tuned to improve performance in heat transfer applications.
Contribution
It demonstrates that nanoparticle suspension can modulate electrowetting hysteresis, providing a new method to optimize heat transfer in cooling systems.
Findings
Contact angle hysteresis decreases with nanoparticle concentration beyond a threshold.
Nanoparticles can enhance or suppress electrowetting hysteresis.
Potential application in improving hot spot cooling efficiency.
Abstract
The pinning of the contact line adversely influences the electrowetting performance of sessile liquid droplets. In this paper, we report the electrowetting hysteresis characteristics of 100 mM aq. KCl sessile liquid droplet placed on a hydrophobic PDMS surface. The effect of nanoparticles on the contact angle hysteresis under the imposed electric potential is further investigated. This study reveals that the contact angle hysteresis decreases beyond a certain threshold value of nanoparticles concentration. Therefore, nanoparticle suspension in the liquid droplet can be used to enhance or suppress the electrowetting hysteresis and consequentially rate of heat transfer during hot spot cooling.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsElectrowetting and Microfluidic Technologies · Modular Robots and Swarm Intelligence · Interactive and Immersive Displays