Macroscale modeling of electromagnetic absorption in zeolite-dielectric composites
Abstract
Electromagnetic pollution has been amplified with the incorporation of wireless technologies, which includes electromagnetic sources operating in the microwave and mm-wave ranges. The design of composite materials that can help mitigate this pollution has been experimentally, but there is a need to develop first-principle computational and mathematical tools which can help in the design of these composites. Recent experiments on candidate composites in-clude metal-ceramic composites, and the use of ion-exchanged zeolites embedded within a dielectric matrix. Using as a foundation recent analytical work of effective medium models in spatially periodic media, a develop a computational framework is proposed that leverage sour previous analytical results to provide insight into the estimated characterization of dielectric-loss electromagnetic absorbers. Questions to be addressee include the net absorption of an electromagnetic wave over multiple frequencies, the relative contribution of magnetic loss compared to the dielectric loss, and the potential for inducting polarization gradients to improve EM absorption. Collaboration with experimental groups at AFRL-Kirtland and the zeolite research group of Dr. Julia Valla at the University of Connecticut is planned.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502410661
Entities
People
- Burt Tilley
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- Worcester Polytechnic Institute