학술논문

Fabrication and Demonstration of a Self-Adaptive Microvalve Array for Distributed Liquid Cooling in Microelectronic Interposers
Document Type
Periodical
Source
Journal of Microelectromechanical Systems J. Microelectromech. Syst. Microelectromechanical Systems, Journal of. 29(5):769-775 Oct, 2020
Subject
Engineered Materials, Dielectrics and Plasmas
Components, Circuits, Devices and Systems
Microvalves
Cooling
Heating systems
Bonding
Silicon
Etching
Thermal management
active liquid cooling
microfluidics
microvalves
thermal buckling
microchannels
Language
ISSN
1057-7157
1941-0158
Abstract
We demonstrated the implementation and self-adaptive behavior of an array of thermostatic microvalves that locally control the water-cooling flow to prevent hot spots in microelectronics while minimizing the pumping power. This strategy enables the compact integration of multiple chips on an interposer without constraints of overheating or thermal cross talk. The performance of microfluidic cell array with self-adaptive valve is assessed experimentally, and compared to other conventional microchannel cooling device showing high efficiency and temperature uniformity. This paper presents the first MEMS implementation and experimental demonstration of this concept, which is part of the STREAMS European project. [2020-0198]