Acoustic directional radiation and enhancement caused by band-edge states of two-dimensional phononic crystals

2006 ◽  
Vol 89 (6) ◽  
pp. 063106 ◽  
Author(s):  
Chunyin Qiu ◽  
Zhengyou Liu
Keyword(s):  
Phononic Crystals ◽  
Band Edge ◽  
Two Dimensional ◽  
Edge States ◽  
Directional Radiation

scholarly journals Excitation to defect-bound band edge states in two-dimensional semiconductors and its effect on carrier transport

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Dan Wang ◽  
Dong Han ◽  
Damien West ◽  
Nian-Ke Chen ◽  
Sheng-Yi Xie ◽  
...  
Keyword(s):  
Carrier Transport ◽  
Band Edge ◽  
Two Dimensional ◽  
Edge States

Tuning the acoustic directional radiation by rotating square rods in two-dimensional phononic crystals

2014 ◽  
Vol 28 (23) ◽  
pp. 1450187 ◽  
Author(s):  
Jing Li ◽  
Fugen Wu ◽  
Huilin Zhong ◽  
Xin Zhang ◽  
Yuanwei Yao
Keyword(s):  
Cross Section ◽  
Acoustic Waves ◽  
Acoustic Propagation ◽  
Phononic Crystals ◽  
Contour Line ◽  
Two Dimensional ◽  
Radiation Frequency ◽  
Line Method ◽  
Directional Radiation ◽  
Wide Range

Analysis is given to acoustic directional radiation tuned by rotating square rods in two-dimensional (2D) solid–fluid phononic crystals (PC). The contour line method is introduced which predicts how the acoustic waves propagate at different frequency. As a specific example, for the systems of steel rods with square cross-section in a water host, we employ this approach to the analysis of the directivity successfully. The directional radiation frequency of two lowest bands are studied in this paper. The results show that the directional radiation frequency can be turned in a wide range by rotating the square rods. While the directivity of acoustic propagation keeps unchanged when the acoustic directional radiation frequency is located in the same band. Moreover, PCs exhibit excellent characteristic of single radiation branch as a corner cut off in a finite structure. Our approach may supply a new way to tune the directional radiation frequency.

scholarly journals Multi-shaped strain soliton networks and moiré-potential-modulated band edge states in twisted bilayer SiC

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24366-24373
Author(s):  
Dawei Kang ◽  
Zheng-Wei Zuo ◽  
Zhaowu Wang ◽  
Weiwei Ju
Keyword(s):  
Twist Angle ◽  
Layered Materials ◽  
Degree Of Freedom ◽  
Band Edge ◽  
Two Dimensional ◽  
Edge States

Tuning the interlayer twist angle provides a new degree of freedom to exploit the potentially excellent properties of two dimensional layered materials.

scholarly journals Anomalous properties of the band-edge states in large two-dimensional photonic quasicrystals

2007 ◽  
Vol 76 (16) ◽  
Author(s):  
Yun Lai ◽  
Zhao-Qing Zhang ◽  
Chi-Hou Chan ◽  
Leung Tsang
Keyword(s):  
Band Edge ◽  
Two Dimensional ◽  
Edge States ◽  
Photonic Quasicrystals

Experimental demonstration of directional acoustic radiation based on two-dimensional phononic crystal band edge states

2007 ◽  
Vol 90 (8) ◽  
pp. 083509 ◽  
Author(s):  
Manzhu Ke ◽  
Zhengyou Liu ◽  
Pei Pang ◽  
Chunyin Qiu ◽  
Degang Zhao ◽  
...  
Keyword(s):  
Acoustic Radiation ◽  
Phononic Crystal ◽  
Band Edge ◽  
Two Dimensional ◽  
Edge States ◽  
Experimental Demonstration

A design rule for two-dimensional van der Waals heterostructures with unconventional band alignments

2020 ◽  
Vol 22 (5) ◽  
pp. 3037-3047 ◽  
Author(s):  
Yuan Si ◽  
Hong-Yu Wu ◽  
Ji-Chun Lian ◽  
Wei-Qing Huang ◽  
Wang-Yu Hu ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Interlayer Coupling ◽  
Band Alignment ◽  
Band Edge ◽  
Design Rule ◽  
Two Dimensional ◽  
Edge States ◽  
Van Der Waals Heterostructures ◽  
Band Alignments

A feasible rule to design unconventional band alignment by inducing the hybridization of band-edge states via interlayer coupling.

Multiband acoustic waveguides constructed by two-dimensional phononic crystals

2020 ◽  
Vol 13 (9) ◽  
pp. 094001
Author(s):  
Wei Zhao ◽  
Yunfei Xu ◽  
Yuting Yang ◽  
Zhi Tao ◽  
Zhi Hong Hang
Keyword(s):  
Phononic Crystals ◽  
Two Dimensional ◽  
Acoustic Waveguides

Theoretical realization of two-dimensional Dirac/Weyl line-node and traversing edge states in penta-X2Y monolayers

2021 ◽  
Vol 23 ◽  
pp. 101057
Author(s):  
Lirong Wang ◽  
Lei Jin ◽  
Guodong Liu ◽  
Ying Liu ◽  
Xuefang Dai ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Edge States ◽  
Line Node
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