Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 瞬态光学技术国家重点实验室

	Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials
	Zhu, Xuefeng 1,2,3; Li, Kun 1; Zhang, Peng 4; Zhu, Jie 5; Zhang, Jintao 1; Tian, Chao 6; Liu, Shengchun 1,6
刊名	nature communications
	2016-05-01
卷号	7
ISSN号	2041-1723
产权排序	4
英文摘要	the ability to slow down wave propagation in materials has attracted significant research interest. a successful solution will give rise to manageable enhanced wave-matter interaction, freewheeling phase engineering and spatial compression of wave signals. the existing methods are typically associated with constructing dispersive materials or structures with local resonators, thus resulting in unavoidable distortion of waveforms. here we show that, with helical-structured acoustic metamaterials, it is now possible to implement dispersion-free sound deceleration. the helical-structured metamaterials present a non-dispersive high effective refractive index that is tunable through adjusting the helicity of structures, while the wavefront revolution plays a dominant role in reducing the group velocity. finally, we numerically and experimentally demonstrate that the helical-structured metamaterials with designed inhomogeneous unit cells can turn a normally incident plane wave into a self-accelerating beam on the prescribed parabolic trajectory. the helical-structured metamaterials will have profound impact to applications in explorations of slow wave physics.
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	photonic crystals ; light ; enhancement ; coiling ; storage ; guides ; space ; chip
收录类别	SCI
语种	英语
WOS记录号	WOS:000376206500001
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/28135]
专题	西安光学精密机械研究所_瞬态光学技术国家重点实验室
作者单位	1.Heilongjiang Univ, Coll Phys Sci & Technol, Harbin 150080, Peoples R China 2.Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China 3.Huazhong Univ Sci & Technol, Innovat Inst, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China 5.Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China 6.Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA
推荐引用方式 GB/T 7714	Zhu, Xuefeng,Li, Kun,Zhang, Peng,et al. Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials[J]. nature communications,2016,7.
APA	Zhu, Xuefeng.,Li, Kun.,Zhang, Peng.,Zhu, Jie.,Zhang, Jintao.,...&Liu, Shengchun.(2016).Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials.nature communications,7.
MLA	Zhu, Xuefeng,et al."Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials".nature communications 7(2016).