Ultrahigh Thermal Conductivity Materials
Abstract
Year 1: (i) Validate phonon-defect scattering models; (ii) Synthesis of BAs crystals with size exceeding 1 mm; (iii) Establish a correlation between measured BAs thermal conductivity and Raman spectra.Year 2: (i) Develop electron-phonon and four-phonon scattering models; (ii) Synthesis of transparent crystalline boron-nitride (c-BN) crystals; (iii) Establish Angstrom method for measuring ultrahigh-k materials. Year 3: (i) Theoretical identification of one or more additional candidate materials with potentially high-k; (ii) Synthesis of crystalline BAs thin films; (iii) Experimental characterization of phonon mean free path distribution in an ultrahigh-k material.Year 4: (i) Theoretical modeling and experimental characterization of boundary scattering and phonon focusing effects in thin films of ultrahigh-k materials; (ii) Synthesis and thermal conductivity measurement of one or more potentially high-k materials suggested in year 3; (iii) Fabrication of a high-k substrate with diameter exceeding 1 cm.Year 5: (i) Theoretical and experimental search of hydrodynamic phonon transport features in ultrahigh-k bulk materials; (ii) Synthesis and thermal conductivity measurements of high-quality, ultrahigh-k bulk and thin film materials; (iii) Thermal interface conductance and CTE mismatch characterizations for an electronic thin film on an ultrahigh-k substrate.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141612436
Entities
People
- Li Shi
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin