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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:
; ;
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1632633
Patent Number(s):
10578569
Application Number:
15/345,330
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {3}
}

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Works referenced in this record:

Method and system for measuring the thermal diffusivity
patent, April 2008


Method of measuring the thermal conductivity of microscopic graphite fibers
patent, December 1996


Method and apparatus for measuring thermophysical properties
patent, July 2003


Measuring a property of a layer in multilayered structure
patent, June 2005