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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
KeywordDielectric Environments Dispersion Hexagonal Boron Nitride Hyperbolic Phonon Polaritons Wrinkles
Source PublicationADVANCED MATERIALS
2017-10-11
DOI10.1002/adma.201702494
Volume29Issue:38
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordGRAPHENE DOMAIN-WALLS ; NEGATIVE REFRACTION ; PLASMONIC PHENOMENA ; METAMATERIALS ; REFLECTION ; NANOSCALE ; EDGE
AbstractInterference-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.
Language英语
WOS IDWOS:000412452500014
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150162
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
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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