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Launching Phonon Polaritons by Natural Boron Nitride Wrinkles with Modifiable Dispersion by Dielectric Environments
Duan, Jiahua1,2; Chen, Runkun1,2; Li, Jingcheng1,2; Jin, Kuijuan1,2,3; Sun, Zhigang4,5; Chen, Jianing1,2,3
关键词Dielectric Environments Dispersion Hexagonal Boron Nitride Hyperbolic Phonon Polaritons Wrinkles
刊名ADVANCED MATERIALS
2017-10-11
DOI10.1002/adma.201702494
29期:38
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]GRAPHENE DOMAIN-WALLS ; NEGATIVE REFRACTION ; PLASMONIC PHENOMENA ; METAMATERIALS ; REFLECTION ; NANOSCALE ; EDGE
英文摘要Interference-free hyperbolic phonon polaritons (HPPs) excited by natural wrinkles in a hexagonal boron nitride (hBN) microcrystal are reported both experimentally and theoretically. Although their geometries are off-resonant with the excitation wavelength, the wrinkles compensate for the large momentum mismatch between photon and phonon polariton, and launch the HPPs without interference. The spatial feature of wrinkles is about 200 nm, which is an order of magnitude smaller than resonant metal antennas at the same excitation wavelength. Compared with phonon polaritons launched by an atomic force microscopy tip, the phonon polaritons launched by wrinkles are interference-free, independent of the launcher geometry, and exhibit a smaller damping rate (approximate to 0.028). On the same hBN microcrystal, in situ nanoinfrared imaging of HPPs launched by different mechanisms is performed. In addition, the dispersion of HPPs is modified by changing the dielectric environments of hBN crystals. The wavelength of HPPs is compressed twofold when the substrate is changed from SiO2 to gold. The findings provide insights into the intrinsic properties of hBN-HPPs and demonstrate a new way to launch and control polaritons in van der Waals materials.
语种英语
WOS记录号WOS:000412452500014
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150162
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
3.Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China
5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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Duan, Jiahua,Chen, Runkun,Li, Jingcheng,et al. Launching Phonon Polaritons by Natural Boron Nitride Wrinkles with Modifiable Dispersion by Dielectric Environments[J]. ADVANCED MATERIALS,2017,29(38).
APA Duan, Jiahua,Chen, Runkun,Li, Jingcheng,Jin, Kuijuan,Sun, Zhigang,&Chen, Jianing.(2017).Launching Phonon Polaritons by Natural Boron Nitride Wrinkles with Modifiable Dispersion by Dielectric Environments.ADVANCED MATERIALS,29(38).
MLA Duan, Jiahua,et al."Launching Phonon Polaritons by Natural Boron Nitride Wrinkles with Modifiable Dispersion by Dielectric Environments".ADVANCED MATERIALS 29.38(2017).
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