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

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:: Hurley, David H.; Schley, Robert S.; Khafizov, Marat

Issue Date:: 2020-03-03

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

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N25/18 - by investigating thermal conductivity

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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.

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                    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.

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                    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.

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@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:

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Fishman, Iiya M.
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Similar Records

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

Abstract

Citation Formats

Method for evaluation of quality of the interface between layer and substrate patent, September 1994

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

Method and apparatus for measuring thermophysical properties patent, July 2003

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Non-contact photothermal method for measuring thermal diffusivity and electronic defect properties of solids patent, September 1997

Method for evaluation of quality of the interface between layer and substrate
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patent, April 2008

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patent, December 1996

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patent, July 2003

Method and apparatus for evaluating surface and subsurface and subsurface features in a semiconductor
patent, August 1991

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patent, June 2005

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patent, September 1997