Topological acoustic polaritons: robust sound manipulation at the subwavelength scale
نویسندگان
چکیده
منابع مشابه
Anderson localization at the subwavelength scale for surface plasmon polaritons in disordered arrays of metallic nanowires
Xianling Shi,1 Xianfeng Chen,1 Boris A. Malomed,2 Nicolae C. Panoiu,3 and Fangwei Ye1,* 1State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China 2Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel 3...
متن کاملDispersionless Manipulation of Reflected Acoustic Wavefront by Subwavelength Corrugated Surface
Free controls of optic/acoustic waves for bending, focusing or steering the energy of wavefronts are highly desirable in many practical scenarios. However, the dispersive nature of the existing metamaterials/metasurfaces for wavefront manipulation necessarily results in limited bandwidth. Here, we propose the concept of dispersionless wavefront manipulation and report a theoretical, numerical a...
متن کاملCrystalline metamaterials for topological properties at subwavelength scales
The exciting discovery of topological condensed matter systems has lately triggered a search for their photonic analogues, motivated by the possibility of robust backscattering-immune light transport. However, topological photonic phases have so far only been observed in photonic crystals and waveguide arrays, which are inherently physically wavelength scaled, hindering their application in com...
متن کاملSubwavelength diffractive acoustics and wavefront manipulation with a reflective acoustic metasurface
Acoustic metasurfaces provide useful wavefront shaping capabilities, such as beam steering, acoustic focusing, and asymmetric transmission, in a compact structure. Most acoustic metasurfaces described in the literature are transmissive devices and focus their performance on steering sound beam of the fundamental diffractive order. In addition, the range of incident angles studied is usually bel...
متن کاملAcoustic one-way metasurfaces: Asymmetric Phase Modulation of Sound by Subwavelength Layer
We theoretically design and numerically demonstrate an acoustic one-way metasurface, which is a planar and acoustically subwavelength layer behaving like a nearly-reflectionless surface with arbitrary wave-steering capability for incident wave impinging on one side, while virtually blocking the reversed wave. The underlying mechanism is based on an asymmetric phase modulation by coupling a phas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2017
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aa66f8