Experimental and theoretical investigations of focusing of ultrasonic waves by two‐dimensional flat phononic crystals

2008 ◽  
Vol 123 (5) ◽  
pp. 3281-3281 ◽  
Author(s):  
Alexey Sukhovich ◽  
John H. Page ◽  
Bassam Merheb ◽  
Jérôme Vasseur ◽  
Pierre Deymier
Keyword(s):  
Ultrasonic Waves ◽  
Phononic Crystals ◽  
Two Dimensional ◽  
Theoretical Investigations

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

Low frequency phononic band structures in two-dimensional arc-shaped phononic crystals

2012 ◽  
Vol 376 (33) ◽  
pp. 2256-2263 ◽  
Author(s):  
Zhenlong Xu ◽  
Fugen Wu ◽  
Zhongning Guo
Keyword(s):  
Low Frequency ◽  
Phononic Crystals ◽  
Two Dimensional ◽  
Band Structures

Robustly Tuning Bandgaps in Two-Dimensional Soft Phononic Crystals with Criss-Crossed Elliptical Holes

2018 ◽  
Vol 31 (5) ◽  
pp. 573-588 ◽  
Author(s):  
Nan Gao ◽  
Yi-lan Huang ◽  
Rong-hao Bao ◽  
Wei-qiu Chen
Keyword(s):  
Phononic Crystals ◽  
Two Dimensional ◽  
Elliptical Holes

Tunable Band Gaps of Acoustic Waves in Two-Dimensional Phononic Crystals With Reticular Band Structures

2009 ◽  
Author(s):  
Zi-Gui Huang ◽  
Yunn-Lin Hwang ◽  
Pei-Yu Wang ◽  
Yen-Chieh Mao
Keyword(s):  
Acoustic Waves ◽  
Composite Structures ◽  
Phononic Crystals ◽  
Band Gaps ◽  
Sound Insulation ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Elastic Band ◽  
Band Structures ◽  
Elastic Band Gaps

The excellent applications and researches of so-called photonic crystals raise the exciting researches of phononic crystals. By the analogy between photon and phonon, repetitive composite structures that are made up of different elastic materials can also prevent elastic waves of some certain frequencies from passing by, i.e., the frequency band gap features also exist in acoustic waves. In this paper, we present the results of the tunable band gaps of acoustic waves in two-dimensional phononic crystals with reticular band structures using the finite element method. Band gaps variations of the bulk modes due to different thickness and angles of reticular band structures are calculated and discussed. The results show that the total elastic band gaps for mixed polarization modes can be enlarged or reduced by adjusting the orientation of the reticular band structures. The phenomena of band gaps of elastic or acoustic waves can potentially be utilized for vibration-free, high-precision mechanical systems, and sound insulation.

scholarly journals Theoretical investigations of a new two-dimensional semiconducting boron–carbon–nitrogen structure

RSC Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 3424-3428
Author(s):  
Yihua Lu ◽  
Xi Zhu ◽  
Min Wang
Keyword(s):  
Band Gap ◽  
Two Dimensional ◽  
Direct Band Gap ◽  
Theoretical Investigations ◽  
Direct Band ◽  
Optical Applications ◽  
Boron Carbon

A predicted 2D BCN structure has a direct band gap and is a good candidate for electronic and optical applications.

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