Multifunctional composites for elastic and electromagnetic wave propagation
Abstract
We establish accurate microstructure-dependent cross-property relations for composite materials that link effective elastic and electromagnetic wave characteristics to one another, including effective wave speeds and attenuation coefficients. Our microstructure-dependent formulas enable us to explore the multifunctional wave characteristics of a broad class of disordered microstructures, including exotic disordered “hyperuniform” varieties, that can have advantages over crystalline ones, such as nearly optimal, direction-independent properties and robustness against defects. Applications include filters that transmit or absorb elastic or electromagnetic waves “isotropically” for a range of wavelengths. Our findings enable one to design multifunctional composites via inverse techniques, including the exterior components of spacecraft or building materials, heat sinks for CPUs, sound-absorbing housings for motors, and nondestructive evaluation of materials.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 09, 2020
- Source ID
- 10.1073/pnas.1914086117
Entities
People
- Jaeuk Kim
- Salvatore Torquato
Organizations
- Air Force Office of Scientific Research
- Princeton University