Three-dimensional thermal analysis of wirelessly powered light-emitting systems

Y. H. Zhang; Y. H. Li; R. H. Kim; H. Tao; T. I. Kim; F. G. Omenetto; J. A. Rogers; Y. Huang

doi:10.1098/rspa.2012.0423

Three-dimensional thermal analysis of wirelessly powered light-emitting systems

Y. H. Zhang, Y. H. Li, R. H. Kim, H. Tao, T. I. Kim, F. G. Omenetto, J. A. Rogers, Y. Huang

Research output: Contribution to journal › Article › peer-review

Abstract

A theoretical model of heat conduction is developed for wirelessly powered microscale inorganic light-emitting diodes (m-ILEDs). Analytical solutions are obtained for the threedimensional temperature distribution of each component in the system, which agree reasonably well with the finite-element analyses and experiment results. A simplified scaling law is presented between the non-dimensional temperature of the m-ILEDs, and the combined geometrical parameters and thermal conductivities of the inductive receiver coil and the substrate. These results provide useful design guidelines for avoiding adverse heating of wireless m-ILEDs systems, of critical importance for bio-implanted applications.

Original language	English (US)
Pages (from-to)	4088-4097
Number of pages	10
Journal	Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	468
Issue number	2148
DOIs	https://doi.org/10.1098/rspa.2012.0423
State	Published - Dec 8 2012
Externally published	Yes

Keywords

Gallium nitride
Solid-state lighting
Thermal analysis
Wireless power

ASJC Scopus subject areas

Mathematics(all)
Engineering(all)
Physics and Astronomy(all)

Online availability

10.1098/rspa.2012.0423

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title = "Three-dimensional thermal analysis of wirelessly powered light-emitting systems",

abstract = "A theoretical model of heat conduction is developed for wirelessly powered microscale inorganic light-emitting diodes (m-ILEDs). Analytical solutions are obtained for the threedimensional temperature distribution of each component in the system, which agree reasonably well with the finite-element analyses and experiment results. A simplified scaling law is presented between the non-dimensional temperature of the m-ILEDs, and the combined geometrical parameters and thermal conductivities of the inductive receiver coil and the substrate. These results provide useful design guidelines for avoiding adverse heating of wireless m-ILEDs systems, of critical importance for bio-implanted applications.",

keywords = "Gallium nitride, Solid-state lighting, Thermal analysis, Wireless power",

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AU - Zhang, Y. H.

AU - Li, Y. H.

AU - Kim, R. H.

AU - Tao, H.

AU - Kim, T. I.

AU - Omenetto, F. G.

AU - Rogers, J. A.

AU - Huang, Y.

PY - 2012/12/8

Y1 - 2012/12/8

N2 - A theoretical model of heat conduction is developed for wirelessly powered microscale inorganic light-emitting diodes (m-ILEDs). Analytical solutions are obtained for the threedimensional temperature distribution of each component in the system, which agree reasonably well with the finite-element analyses and experiment results. A simplified scaling law is presented between the non-dimensional temperature of the m-ILEDs, and the combined geometrical parameters and thermal conductivities of the inductive receiver coil and the substrate. These results provide useful design guidelines for avoiding adverse heating of wireless m-ILEDs systems, of critical importance for bio-implanted applications.

AB - A theoretical model of heat conduction is developed for wirelessly powered microscale inorganic light-emitting diodes (m-ILEDs). Analytical solutions are obtained for the threedimensional temperature distribution of each component in the system, which agree reasonably well with the finite-element analyses and experiment results. A simplified scaling law is presented between the non-dimensional temperature of the m-ILEDs, and the combined geometrical parameters and thermal conductivities of the inductive receiver coil and the substrate. These results provide useful design guidelines for avoiding adverse heating of wireless m-ILEDs systems, of critical importance for bio-implanted applications.

KW - Gallium nitride

KW - Solid-state lighting

KW - Thermal analysis

KW - Wireless power

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Three-dimensional thermal analysis of wirelessly powered light-emitting systems

Abstract

Keywords

ASJC Scopus subject areas

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