Two-Dimensional Actuation of Liquid-Metal Droplets for Hot-Spot Cooling
- Resource Type
- Conference
- Authors
- Dacuycuy, Saige J.; Shiroma, Wayne A.; Ohta, Aaron T.
- Source
- 2021 20th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm) Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm), 2021 20th IEEE Intersociety Conference on. :1262-1267 Jun, 2021
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Robotics and Control Systems
Transportation
Thermal management of electronics
Performance evaluation
Electrodes
Electric potential
Cooling
Conferences
Thermomechanical processes
continuous electrowetting
liquid metal
thermal management
- Language
- ISSN
- 2694-2135
A liquid-metal droplet is actuated in a two-dimensional plane to demonstrate controlled actuation and selective hotspot cooling. Continuous electrowetting actuates the droplet to move along a prescribed path within a 3 cm × 3 cm well. The terminal velocity of the actuated droplet is achieved at 13.3 cm/s with an actuation voltage of 11 V DC. Increasing the number of electrodes along the well edges results in more precise positioning of the liquid-metal droplet. This technique allows an actuated droplet to perform rapid cooling at localized hot spots within the device. For an actuation voltage of 10 V DC, the liquid-metal droplet decreases the temperature of a hot spot by approximately 7 °C.