Locally resonant surface acoustic wave band gaps in a two-dimensional phononic crystal of pillars on a surface

2010 ◽  
Vol 81 (21) ◽  
Author(s):  
Abdelkrim Khelif ◽  
Younes Achaoui ◽  
Sarah Benchabane ◽  
Vincent Laude ◽  
Boujamaa Aoubiza
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Phononic Crystal ◽  
Band Gaps ◽  
Wave Band ◽  
Two Dimensional

Surface Acoustic Wave Band Gaps and Phononic Structures on Thin Solid Plates

2005 ◽  
Author(s):  
Xinya Zhang ◽  
Ted Jackson ◽  
Emmanuel Lafound ◽  
Pierre Deymier ◽  
Jerome Vasseur
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Phononic Crystal ◽  
Surface Acoustic Waves ◽  
Phononic Crystals ◽  
Band Gaps ◽  
Laser Ultrasonics ◽  
Thin Plates ◽  
Wave Band

Novel phononic crystal structures on thin plates for material science applications in ultrasonic range (~ MHz) are described. Phononic crystals are created by a periodic arrangement of two or more materials displaying a strong contrast in their elastic properties and density. Because of the artificial periodic elastic structures of phononic crystals, there can exist frequency ranges in which waves cannot propagate, giving rise to phononic band gaps which are analogous to photonic band gaps for electromagnetic waves in the well-documented photonic crystals. In the past decades, the phononic structures and acoustic band gaps based on bulk materials have been researched in length. However few investigations have been performed on phononic structures on thin plates to form surface acoustic wave band gaps. In this presentation, we report a new approach: patterning two dimensional membranes to form phononic crystals, searching for specific acoustic transport properties and surface acoustic waves band gaps through a series of deliberate designs and experimental characterizations. The proposed phononic crystals are numerically simulated through a three-dimensional plane wave expansion (PWE) method and experimentally characterized by a laser ultrasonics instrument that has been developed in our laboratory.

Analysis of surface acoustic wave propagation in a two-dimensional phononic crystal

2012 ◽  
Vol 112 (2) ◽  
pp. 023524 ◽  
Author(s):  
Yong Li ◽  
Zhilin Hou ◽  
Mourad Oudich ◽  
M. Badreddine Assouar
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Phononic Crystal ◽  
Two Dimensional ◽  
Acoustic Wave Propagation

scholarly journals Surface Acoustic Wave Propagation in Two-dimensional Phononic Crystal on Piezoelectric Substrate

2014 ◽  
Vol 14 (2) ◽  
pp. 5-12
Author(s):  
Sergey Sergeevich Yankin ◽  
◽  
Abdelkrim Talbi ◽  
Jean-Claude Gerbedoen ◽  
Vladimir Leonidovich Preobrazhensky ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Phononic Crystal ◽  
Two Dimensional ◽  
Acoustic Wave Propagation ◽  
Piezoelectric Substrate

Evidence of surface acoustic wave band gaps in the phononic crystals created on thin plates

2006 ◽  
Vol 88 (4) ◽  
pp. 041911 ◽  
Author(s):  
Xinya Zhang ◽  
Ted Jackson ◽  
Emmanuel Lafond ◽  
Pierre Deymier ◽  
Jerome Vasseur
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Phononic Crystals ◽  
Band Gaps ◽  
Thin Plates ◽  
Wave Band

scholarly journals Surface acoustic wave band gaps in micro-machined air/silicon phononic structures — theoretical calculation and experiment

2005 ◽  
Vol 220 (9-10) ◽  
Author(s):  
Tsung-Tsong Wu ◽  
Zi-Gui Huang ◽  
Shih-Yang Liu
Keyword(s):  
Acoustic Wave ◽  
Band Gap ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Expansion Method ◽  
Band Gaps ◽  
Wave Band ◽  
Filling Fraction ◽  
Saw Devices ◽  
Experimental Side

AbstractIn this paper, we investigate the band gaps of micro-machined air/silicon phononic structures both theoretically and experimentally. Based on the plane wave expansion method, dispersion relations of the surface and bulk modes with square lattices in air/silicon two-dimensional phononic structures are calculated and discussed. Band gap widths due to the filling fraction and temperature variation are also analyzed. On the experimental side, generation and reception of high frequency surface acoustic wave in this band structure are realized by a pair of interdigital transducers (IDT) with frequency around 200 MHz. Details of the fabricating process of the phononic structure and the high frequency surface wave generating and receiving IDTs are given. The results demonstrate clearly the existence of SAW band gap in the micro-machined phononic structure and this study may serve as a basis for studying the band gap of SAW in micro-machined phononic structure with the dimension in the order of micrometer and find applications in the RF SAW devices.

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