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}
}