NDLI: Analysing Transient Thermoreflectance Data Using Network Identification by Deconvolution

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ezzahri, Y. Shakouri, A.
Copyright Year	2009
Abstract	Network Identification by Deconvolution (NID) method is applied to the analysis of the thermal transient pulsed laser heating. This is the excitation used in many optical experiments such as the Pump-Probe Transient Thermoreflectance experiment. NID method is based on linear RC network theory using Fourier’s law of heat conduction. This approach is used to extract the thermal time constant spectrum of the sample after excitation by either a step or pulsed heat source at one surface. Furthermore, using network theory mathematical transformations, the details of the heat flux path through the sample can be analyzed. This is done by introducing the cumulative and differential structure functions. We show that the conventional NID method can be modified to analyze transient laser heating experiments. The advantage is that the thermal resistance of the top material layers and the major interface thermal resistances can be extracted without the need of assuming a specific multilayer structure. Some of the limitations due to the finite thermal penetration depth of the transient heat pulse will be discussed.
Sponsorship	Electronic and Photonic Packaging Division
Starting Page	453
Ending Page	462
Page Count	10
File Format	PDF
ISBN	9780791843604
DOI	10.1115/InterPACK2009-89200
e-ISBN	9780791838518
Volume Number	ASME 2009 InterPACK Conference, Volume 2
Conference Proceedings	ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability
Language	English
Publisher Date	2009-07-19
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Heat conduction Heat Thermal resistance Heating Lasers Pumps Thermoreflectance Systems analysis Excitation Probes Heat flux Transients (dynamics)
Content Type	Text
Resource Type	Article

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