NDLI: Integrated Microfluidic Pumping for Cooling Applications

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Arjan, J. H. Frijns Liu, Zhipeng Roy, J. S. Derks Michel, F. M. Speetjens Anton, A. Van Steenhoven
Copyright Year	2013
Abstract	Temperature management in microsystems is a technical problem with an increasing importance: although the power consumption of integrated circuits is not increasing, due to further miniaturization the local power density is still increasing. Moreover, in the near future more and more micro components will be integrated in flexible system-in-foil (SIF) packages. These packages can contain ultra-thin (8–50 micron) flexible embedded silicon chips combined with polymer electronics, optical systems and microfluidic channels e.g. for point-of-care diagnostics. However, the low thermal conductivity of the polymeric package is aggravating the heat management problem. The life span of micro components, but also the performance of some micro components, like (O)LEDs, can be strongly temperature dependent. Therefore an adequate temperature control is required. The thermal management problems can potentially be addressed by embedding micro-channels containing a flowing cooling medium in close proximity and preferably directly underneath the electronic circuit. However, many applications do not allow for external pumps and therefore pumping needs to be integrated in these channels as well. In this paper some promising integrated micro pumping techniques, like AC-electro osmosis and ferrofluidic pumping, will be described and discussed. The multi-physics modeling approach will be presented and the numerical results will be analyzed and compared with flow fields that are measured by 3D astigmatism micro particle tracking velocimetry (3D micro-PTV).
Sponsorship	Fluids Engineering Division Heat Transfer Division
File Format	PDF
ISBN	9780791855591
DOI	10.1115/ICNMM2013-73147
Conference Proceedings	ASME 2013 11th International Conference on Nanochannels, Microchannels, and Minichannels
Language	English
Publisher Date	2013-06-16
Publisher Place	Sapporo, Japan
Access Restriction	Subscribed
Subject Keyword	Microelectromechanical systems Power density Energy consumption Temperature Cooling Circuits Electronics Osmosis Light-emitting diodes Flow (dynamics) Modeling Microparticles Physics Silicon chips Microchannels Integrated circuits Heat Pumps Thermal conductivity Thermal management Temperature control Polymers Microfluidics
Content Type	Text
Resource Type	Article

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