Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume 32, Issue 4, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979218500340
Keywords
Phononic crystal; point group symmetry; translation group symmetry; bandgap
Funding
- National Natural Science Foundation of China [11572074]
- Program for New Century Excellent Talents in University
- Fundamental Research Funds for the Central Universities
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The effects of symmetries on the bandgap in a newly designed hybrid phononic crystal plate composed of rubber slab and epoxy resin stub are studied for better controlling of bandgaps. The point group symmetry is changed by changing the orientation of the stub. The translation group symmetry is changed by changing the side length and the height of adjacent stubs. Results show that the point group symmetry and translation group symmetry can be important factors for controlling of the bandgaps of phononic crystal. Wider bandgap is obtained by suitable orientation of the stub. Lower bandgap appears when the differences between the adjacent stubs become bigger in supercell.
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