Heat flux concentration through polymeric thermal lenses

A significant contributor to energy inefficiency is the generation as well as the uneven dissipation of heat. Practical methods to adeptly channel heat flux (Q) would then have widespread applications to improved energy utilization and thermal energy management. It would be beneficial to engineer le...

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Bibliographic Details
Published in:Applied physics letters 2014-12, Vol.105 (23)
Main Authors: Kapadia, R. S., Bandaru, P. R.
Format: Article
Language:English
Subjects:
Applied physics
Composite materials
Energy dissipation
Energy management
Energy utilization
Heat flux
Heat transfer
Thermal conductivity
Thermal energy
Thermal lensing
Thermal utilization
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Summary:A significant contributor to energy inefficiency is the generation as well as the uneven dissipation of heat. Practical methods to adeptly channel heat flux (Q) would then have widespread applications to improved energy utilization and thermal energy management. It would be beneficial to engineer lens-like composite materials (graded in terms of length or thermal conductivity) with augmented attributes for heat control. Here, we propose and demonstrate polymeric composite based Q focusing lenses, architected through geometrical considerations. We indicate a five-fold enhancement of the Q, at the level of ∼2500 W/m2, enabled through such thermal lenses.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4904260