Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal Model for Time-Domain Thermoreflectance Experiments in a Laser
  Flash Geometry   Time-domain thermoreflectance (TDTR) is a well-established pump/probe method
for measuring thermal conductivity and interface conductance of multilayers.
Interpreting signals in a TDTR experiment requires a thermal model.In standard
front/front TDTR experiments, both pump and probe beams typically irradiate the
surface of a multilayer. As a result, existing thermal models for interpreting
thermoreflectance experiments assume the pump and probe beams both interact
with the surface layer. Here, we present a frequency-domain solution to the
heat-diffusion equation of a multilayer in response to nonhomogenous laser
heating. This model allows analysis of experiments where the pump and probe
beams irradiate opposite sides of a multilayer. We call such a geometry a
front/back experiment to differentiate such experiments from standard TDTR
experiments. As an example, we consider a 60nm amorphous Si film. We consider
how signals differ in a front/front vs. front/back geometry and compare thermal
model predictions to experimental data.

12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat