High Emissivity Materials Using Multilayer Oxides
Abstract
The proposed objective will be carried out by a team of two investigators from University of Southern California with a multidisciplinary background spanning nanophotonic modeling and infrared spectroscopy (Povinelli), and materials design, synthesis, and characterization (Ravichandran). The proposed research will establish a closed loop of activities between modeling, synthesis, characterization, and infrared measurement, and will be executed with the following tasks- (1) Demonstrate growth and characterization of single layer oxide films, (2) Design optimized multilayer films for broadband high emissivity, and (3) Fabricate prototype, bilayer films and characterize infrared properties. Ultrathin coatings with high emissivity spanning infrared wavelengths are desired for radiative cooling of hypersonic vehicles. The material requirements for such coatings include oxidation and thermal shock resistance, thermal stability, high thermal conductance, and high emissivity. The proposed research introduces nanophotonic design to significantly reduce the thicknesses of such emissive coatings by using index-mismatched, oxide multilayers. The results are thus expected to benefit the performance of state-of-the-art hypersonic vehicles, as well as other thermal management applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310524
Entities
People
- Michelle Povinelli
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Southern California