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説明:

Enhancing light–matter interactions with photonic structures is critical in classical and quantum nanophotonics. Recently, Moiré twisted bilayer optical materials have been proposed as a promising means toward a tunable platform for nanophotonic devices. However, the realization of Moiré photonic crystal (PhC) cavities has been challenging, due to a lack of advanced nanofabrication techniques and availability of stand-alone transparent membranes. Here, we leverage the properties of the van der Waals material hexagonal boron nitride to realize Moiré bilayer PhC cavities. We design and fabricate a range of devices with controllable twist angles, with flatband modes in the visible spectral range (∼450 nm). Optical characterization confirms the presence of spatially periodic cavity modes originating from the engineered dispersion relation (flatband). Our findings present a major step toward harnessing a two-dimensional van der Waals material for the next generation of on chip, twisted nanophotonic systems.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Article that appeared in final form in Nano Letters, copyright © 2025 American Chemical Society. To access the final published article see https://doi.org/10.1021/acs.nanolett.5c03959.

キーワード: Moiré photonic crysta, Hexagonal boron nitride, Flatband

刊行年月日: 2025-10-01

出版者: American Chemical Society (ACS)

掲載誌:

• Nano Letters (ISSN: 15306984) vol. 25 issue. 39 p. 14459-14466

研究助成金:

• National Research Foundation of Korea 2022M3H4A1A04096396
• National Research Foundation of Korea RS-2023-00254055
• Air Force Office of Scientific Research FA2386-25-1-4044
• Australian Research Council CE200100010
• Australian Research Council DP240103127
• Australian Research Council FT220100053
• Office of Naval Research Global N62909-22-1-2028
• Japan Society for the Promotion of Science 21H05233
• Japan Society for the Promotion of Science 23H02052

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1021/acs.nanolett.5c03959

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更新時刻: 2026-06-26 14:16:31 +0900

MDRでの公開時刻: 2026-09-17 08:25:43 +0900