Pushing the limits of heat transport through development of extreme materials and new characterization tools for nanoscale thermal metrology
Atomistic Computational Tool for Phonon Scattering
In semiconductors, heat is carried by the wavelike atomic vibrations called "phonons," with typical wavelengths of a few nanometers. At the wavelengths, waves feel the atomic structure of materials, and thus continuum mechanics can no longer be used to simulate wave propagation and scattering. Rohit Kakodkar has developed a new technique for breaking phonon scattering simulations into systems of linear equations that are more easily handled by computers. The results are beautiful!
In-Plane Thermal Conductivity of Thin Films
A modification of time-domain thermoreflectance enables accurate measurements of in-plane properties for films less than 20nm thick! Read the article published at Review of Scientific Instruments.