Laser Based Micron Level Thermal Property Measurement

National Laboratory: 
Idaho National Laboratory
Characterization Class: 
Mechanical Behavior of Materials
Non-destructive examination
Computational Tools Class: 
Structure-Properties
Description: 

Idaho National Laboratory uses a thermoreflectance approach to simultaneously measure thermal conductivity and diffusivity with micron-level resolution. This experimental information, in tandem with thermal transport modeling, enables connecting measured properties directly to microstructure. This supports our laboratory mission to provide new validation metrics for fundamental computational materials science models.

Capability Bounds: 

From cryogenic temperatures to ~700°C. Material surface must be polished.

Unique Aspects: 
  • Uses tightly focused lasers to locally heat and map temperature field.
  • Measures contact resistance (thin films; grain boundaries).
  • Can image thermal anisotropy.
Availability: 

Work must be conducted at INL.

Single Point of Contact: 

Name: Dr. David Hurley, Directorate Fellow
Email: david.hurley@inl.gov
Phone: (208) 526-3666

References: 
  1. M. Khafizov, V. Chauhan, Y. Wang, F. Riyad, N. Hang, and D. H. Hurley, Investigation of Thermal Transport in Composites and Ion Beam Irradiated Materials for Nuclear Applications, J. Mater. Res. 32, 204 (2017).
  2. D. H. Hurley, R. S. Schley, M. Khafizov, B. L. Wendt, Local Measurement of Thermal Conductivity and Diffusivity, Rev. Sci. Instrum. 86, 123901 (2015).
Supporting Document(s):