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Title: Apparatus for determining a thermal conductivity and a thermal diffusivity of a material, and related methods

Abstract

A method of determining a thermal conductivity and a thermal diffusivity of a material comprises exposing a specimen comprising a substrate of a material and a metallic film over the substrate to an amplitude modulated pump laser beam comprising electromagnetic radiation having a first wavelength and a first modulation frequency to form a pump spot on the metallic film. The specimen is exposed to a probe laser beam comprising electromagnetic radiation having a second wavelength to form a probe spot on the metallic film. A phase shift between the pump laser beam and a reflected probe laser beam is measured while scanning the pump spot relative to the probe spot. A modulation frequency of the pump laser beam is changed to a second modulation frequency and the pump spot is scanned relative to the probe spot while detecting the phase shift. A phase profile of the material is measured and a continuum-based model is fit to the phase profile. Related microscopes and related methods are also disclosed.

Inventors:
; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1632633
Patent Number(s):
10,578,569
Application Number:
15/345,330
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Patent
Resource Relation:
Patent File Date: 11/07/2016
Country of Publication:
United States
Language:
English

Citation Formats

Hurley, David H., Schley, Robert S., and Khafizov, Marat. Apparatus for determining a thermal conductivity and a thermal diffusivity of a material, and related methods. United States: N. p., 2020. Web.
Hurley, David H., Schley, Robert S., & Khafizov, Marat. Apparatus for determining a thermal conductivity and a thermal diffusivity of a material, and related methods. United States.
Hurley, David H., Schley, Robert S., and Khafizov, Marat. Tue . "Apparatus for determining a thermal conductivity and a thermal diffusivity of a material, and related methods". United States. https://www.osti.gov/servlets/purl/1632633.
@article{osti_1632633,
title = {Apparatus for determining a thermal conductivity and a thermal diffusivity of a material, and related methods},
author = {Hurley, David H. and Schley, Robert S. and Khafizov, Marat},
abstractNote = {A method of determining a thermal conductivity and a thermal diffusivity of a material comprises exposing a specimen comprising a substrate of a material and a metallic film over the substrate to an amplitude modulated pump laser beam comprising electromagnetic radiation having a first wavelength and a first modulation frequency to form a pump spot on the metallic film. The specimen is exposed to a probe laser beam comprising electromagnetic radiation having a second wavelength to form a probe spot on the metallic film. A phase shift between the pump laser beam and a reflected probe laser beam is measured while scanning the pump spot relative to the probe spot. A modulation frequency of the pump laser beam is changed to a second modulation frequency and the pump spot is scanned relative to the probe spot while detecting the phase shift. A phase profile of the material is measured and a continuum-based model is fit to the phase profile. Related microscopes and related methods are also disclosed.},
doi = {},
url = {https://www.osti.gov/biblio/1632633}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {3}
}

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