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

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

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

scholarly journals Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab

2020 ◽  
Vol 10 (13) ◽  
pp. 4594 ◽  
Author(s):  
Mohd Syafiq Faiz ◽  
Mahmoud Addouche ◽  
Ahmad Rifqi Md. Zain ◽  
Kim S. Siow ◽  
Amar Chaalane ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Phononic Crystal ◽  
Laser Doppler Vibrometer ◽  
Square Lattice ◽  
Two Dimensional ◽  
Biological Applications ◽  
Experimental Demonstration ◽  
Scanning Laser Doppler Vibrometer ◽  
Wave Filter

With the aim of selecting particular frequencies of interest and rejecting others, the waveguiding and filtering properties of a two-dimensional phononic crystal slab are investigated in the context of a filtering application. To this end, we designed and manufactured a metallic device that consists of a square lattice of cylindrical pillars mounted on the top of a plate by using 3D printing technology. We respectively explored the theoretical and experimental characteristics of the device by using finite element method, a Micro System Analyzer (MSA) and a scanning laser Doppler vibrometer. The proposed device shows a complete band gap for Lamb wave around 0.3 MHz with a relative band-width of 30 % . Tailorable waveguides are realized inside this phononic crystal by inserting several space gaps to achieve a demultiplexing effect through the splitting of an acoustic signal towards three different bandpass frequency channels. The demultiplexing performance has been experimentally demonstrated by achieving rejection levels up to 60 dB. The proposed phononic platform can have a significant impact in signal processing as well as droplet manipulation for biological applications.

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.

Directional enhanced acoustic radiation caused by a point cavity in a finite-size two-dimensional phononic crystal

2008 ◽  
Vol 93 (20) ◽  
pp. 201904 ◽  
Author(s):  
Feng-Chia Hsu ◽  
Tsung-Tsong Wu ◽  
Jin-Chen Hsu ◽  
Jia-Hong Sun
Keyword(s):  
Acoustic Radiation ◽  
Phononic Crystal ◽  
Finite Size ◽  
Two Dimensional

Experimental demonstration of the negative refraction of a transverse elastic wave in a two-dimensional solid phononic crystal

2010 ◽  
Vol 96 (10) ◽  
pp. 101905 ◽  
Author(s):  
Bruno Morvan ◽  
Alain Tinel ◽  
Anne-Christine Hladky-Hennion ◽  
Jérôme Vasseur ◽  
Bertrand Dubus
Keyword(s):  
Elastic Wave ◽  
Negative Refraction ◽  
Phononic Crystal ◽  
Two Dimensional ◽  
Experimental Demonstration
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