Title :
Negative refraction of transverse waves in an elastic phononic crystal
Author :
Hladky-Hennion, Anne-Christine ; Vasseur, Jérôme ; Dubus, Bertrand ; Djafari-Rouhani, Bahram ; Morvan, Bruno ; Tinel, Alain ; Ekeom, Didace
Author_Institution :
IEMN, CNRS, Lille
Abstract :
This paper reports numerical and experimental analyses of negative refraction process using a phononic crystal, made of a periodic arrangement of holes in aluminium. Dispersion curves are discussed and conditions for which negative refraction can appear are identified. Negative refraction is clearly obtained for transverse waves. Experiments confirm numerical predictions.
Keywords :
aluminium; elastic waves; elasticity; metamaterials; phononic crystals; Al; aluminium; dispersion curves; elastic phononic crystal; negative refraction process; transverse waves; Acoustic propagation; Acoustic refraction; Acoustic waves; Aluminum; Composite materials; Crystalline materials; Crystals; Filling; Frequency domain analysis; Solids; component; negative refraction; phononic crystals;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0062
