TY - GEN
T1 - Zone folding induced topological insulators in phononic crystals
AU - Deng, Yuanchen
AU - Jing, Yun
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/31
Y1 - 2017/10/31
N2 - This article investigates a flow-free, pseudospin-based acoustic topological insulator. Zone folding, a strategy originated from photonic crystal, is used to form double Dirac cones in phononic crystal. The lattice symmetry of the phononic crystal is broken by tuning the size of the center 'atom' of the unit cell in order to open the nontrivial topological gap. Robust sound one-way propagation is demonstrated both numerically. This study provides a flexible approach for realizing acoustic topological insulators, which are promising for applications such as noise control and waveguide design.
AB - This article investigates a flow-free, pseudospin-based acoustic topological insulator. Zone folding, a strategy originated from photonic crystal, is used to form double Dirac cones in phononic crystal. The lattice symmetry of the phononic crystal is broken by tuning the size of the center 'atom' of the unit cell in order to open the nontrivial topological gap. Robust sound one-way propagation is demonstrated both numerically. This study provides a flexible approach for realizing acoustic topological insulators, which are promising for applications such as noise control and waveguide design.
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U2 - 10.1109/ULTSYM.2017.8091821
DO - 10.1109/ULTSYM.2017.8091821
M3 - Conference contribution
AN - SCOPUS:85039441116
T3 - IEEE International Ultrasonics Symposium, IUS
BT - 2017 IEEE International Ultrasonics Symposium, IUS 2017
PB - IEEE Computer Society
T2 - 2017 IEEE International Ultrasonics Symposium, IUS 2017
Y2 - 6 September 2017 through 9 September 2017
ER -