A5044578467- Thermal Radiation and Cooling Technologies
- Thermal properties of materials
- Acoustic Wave Phenomena Research
- Terahertz technology and applications
- Metamaterials and Metasurfaces Applications
- Thermoelastic and Magnetoelastic Phenomena
- Thermography and Photoacoustic Techniques
- Mechanical and Optical Resonators
National Technical University "Kharkiv Polytechnic Institute"
2014-2020
We introduce and model a three-dimensional (3D) atomic-scale phononic metamaterial producing two-path phonon interference antiresonances to control the heat flux spectrum. show that crystal plane partially embedded with defect-atom arrays can completely reflect phonons at frequency prescribed by masses interaction forces. emphasize predominant role of second path destructive in origin total reflection thermal conductance reduction comparison Fano-resonance concept. The random defect...
The paper theoretically studies the possibility of using effects phonon interference between paths through different interatomic bonds for control heat transfer internal crystal interfaces and design metamirrors meta-absorbers. These meta-absorbers are considered to be defect nanolayers atomic-scale thicknesses embedded in a crystal. Several analytically solvable three-dimensional lattice-dynamics models at planes described. It is shown that due destructive two or more paths, planes, fully...
Phononic metamaterial which consists of two (or several) nanolayers separated by a planar defect atomic-scale thickness is studied, under the assumption that two-channel phonon interference mechanism transverse (cross-plane) heat flux control dominant at high temperatures. An analytically exactly solvable discrete three-dimensional (3D) model multilayer interface between semi-infinite bcc-lattice crystals used to simulate phononic metamirror, metafilter, and meta-absorber. Two options...