An integrated liquid cooling system based on Galinstan liquid metal droplets
An integrated liquid cooling system based on Galinstan liquid metal droplets
The continued miniaturization of electronic components demands integrated liquid cooling systems with minimized external connections and fabrication costs that can be implanted very close to localized hot spots. This might be challenging for existing liquid cooling systems because most of them rely on external pumps, connecting tubes, and microfabricated heat sinks. Here, we demonstrate an integrated liquid cooling system by utilizing a small droplet of liquid metal Galinstan, which is placed over the hot spot. Energizing the liquid metal droplet with a square wave signal creates a surface tension gradient across the droplet, which induces Marangoni flow over the surface of droplet. This produces a high flow rate of coolant medium through the cooling channel, enabling a "soft" pump. At the same time, the high thermal conductivity of liquid metal extends the heat transfer surface and facilitates the dissipation of heat, enabling a "soft" heat sink. This facilitates the rapid cooling of localized hot spots, as demonstrated in our experiments. Our technology facilitates customized liquid cooling systems with simple fabrication and assembling processes, with no moving parts that can achieve high flow rates with low power consumption.
convective cooling, electrowetting, Galinstan, heat sink, integrated cooling system, liquid metal, Marangoni effect
2173-2180
Zhu, Jiu Yang
cf0c4370-07ac-46b9-a051-278e6895169f
Tang, Shi Yang
1d0f15c6-2a3e-4bad-a3d8-fc267db93ed4
Khoshmanesh, Khashayar
72608a1e-0e41-4360-8065-98d872493aed
Ghorbani, Kamran
883a5249-0473-435f-a3ca-b8167d19f368
27 January 2016
Zhu, Jiu Yang
cf0c4370-07ac-46b9-a051-278e6895169f
Tang, Shi Yang
1d0f15c6-2a3e-4bad-a3d8-fc267db93ed4
Khoshmanesh, Khashayar
72608a1e-0e41-4360-8065-98d872493aed
Ghorbani, Kamran
883a5249-0473-435f-a3ca-b8167d19f368
Zhu, Jiu Yang, Tang, Shi Yang, Khoshmanesh, Khashayar and Ghorbani, Kamran
(2016)
An integrated liquid cooling system based on Galinstan liquid metal droplets.
ACS Applied Materials and Interfaces, 8 (3), .
(doi:10.1021/acsami.5b10769).
Abstract
The continued miniaturization of electronic components demands integrated liquid cooling systems with minimized external connections and fabrication costs that can be implanted very close to localized hot spots. This might be challenging for existing liquid cooling systems because most of them rely on external pumps, connecting tubes, and microfabricated heat sinks. Here, we demonstrate an integrated liquid cooling system by utilizing a small droplet of liquid metal Galinstan, which is placed over the hot spot. Energizing the liquid metal droplet with a square wave signal creates a surface tension gradient across the droplet, which induces Marangoni flow over the surface of droplet. This produces a high flow rate of coolant medium through the cooling channel, enabling a "soft" pump. At the same time, the high thermal conductivity of liquid metal extends the heat transfer surface and facilitates the dissipation of heat, enabling a "soft" heat sink. This facilitates the rapid cooling of localized hot spots, as demonstrated in our experiments. Our technology facilitates customized liquid cooling systems with simple fabrication and assembling processes, with no moving parts that can achieve high flow rates with low power consumption.
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More information
Accepted/In Press date: 30 December 2015
e-pub ahead of print date: 12 January 2016
Published date: 27 January 2016
Keywords:
convective cooling, electrowetting, Galinstan, heat sink, integrated cooling system, liquid metal, Marangoni effect
Identifiers
Local EPrints ID: 481731
URI: http://eprints.soton.ac.uk/id/eprint/481731
ISSN: 1944-8244
PURE UUID: d976920d-4f45-4c21-8bd5-dfa22675a6bd
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Date deposited: 06 Sep 2023 16:53
Last modified: 06 Jun 2024 02:18
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Contributors
Author:
Jiu Yang Zhu
Author:
Shi Yang Tang
Author:
Khashayar Khoshmanesh
Author:
Kamran Ghorbani
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