Focusing and directional beaming effects of airborne sound through a planar lens with zigzag slits

Journal Article · Wed Jan 14 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4905910· OSTI ID:22412835

Tang, Kun; Qiu, Chunyin; Lu, Jiuyang; Ke, Manzhu ^[1]; Liu, Zhengyou ^[1]

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1. Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072 (China)

Based on the Huygens-Fresnel principle, we design a planar lens to efficiently realize the interconversion between the point-like sound source and Gaussian beam in ambient air. The lens is constructed by a planar plate perforated elaborately with a nonuniform array of zigzag slits, where the slit exits act as subwavelength-sized secondary sources carrying desired sound responses. The experiments operated at audible regime agree well with the theoretical predictions. This compact device could be useful in daily life applications, such as for medical and detection purposes.

• OSTI ID: 22412835
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR
DETECTION
FOCUSING
GAUSS FUNCTION
LENSES
OPTICS
PHOTON BEAMS
PLATES
SOUND WAVES