Hyperbolic metasurface based on graphene-boron nitride transverse heterojunction and preparation method and application thereof
A technology of boron nitride and graphene, which is applied in the field of hyperbolic metasurfaces and applications, to prepare mid-infrared band metasurface imaging and light energy transmission devices, can solve the problem of weakening modulation ability of hyperbolic metasurfaces and difficulty in realizing dynamic regulation of hyperbolic Wave, compression, and weak local confinement capabilities, etc., to achieve strong mode field confinement capabilities, easy photon integration, and small structure size
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Embodiment 1
[0046] like figure 1 As shown, a graphene-boron nitride lateral heterojunction hyperbolic metasurface includes a substrate and a heterostructure layer covering the upper surface of the substrate, and the heterostructure layer has a nano-grating structure.
[0047] The heterostructure layer is composed of graphene and hexagonal boron nitride, and the specific heterostructure layer is composed of several strip-shaped graphene layers and several strip-shaped hexagonal boron nitride layers arranged at intervals ( figure 1 The middle is the strip extending forward and backward), such as figure 1 As shown, the hexagonal boron nitride layer ( figure 1 Middle mark Graphene) Thickness H hBN 20nm, width W hBN is 5 μm, the graphene layer ( figure 1 Middle logo hBN) thickness H Gra The thickness is 0.34nm. Since the graphene layer is very thin compared with the hexagonal boron nitride layer, several graphene layers and several hexagonal boron nitride layers are arranged at intervals ...
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