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Resonance Couplings in Si@MoS2 Core-Shell Architectures.
Hinamoto, Tatsuki; Lee, Yea-Shine; Dereshgi, Sina Abedini; DiStefano, Jennifer G; Dos Reis, Roberto; Sugimoto, Hiroshi; Aydin, Koray; Fujii, Minoru; Dravid, Vinayak P.
Afiliação
  • Hinamoto T; Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai Nada, Kobe, 657-8501, Japan.
  • Lee YS; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
  • Dereshgi SA; Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA.
  • DiStefano JG; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
  • Dos Reis R; International Institute for Nanotechnology (IIN), Northwestern University, Evanston, IL, 60208, USA.
  • Sugimoto H; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
  • Aydin K; Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, Northwestern University, Evanston, IL, 60208, USA.
  • Fujii M; Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai Nada, Kobe, 657-8501, Japan.
  • Dravid VP; Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA.
Small ; 18(17): e2200413, 2022 Apr.
Article em En | MEDLINE | ID: mdl-35304967
Heterostructures of transition metal dichalcogenides and optical cavities that can couple to each other are rising candidates for advanced quantum optics and electronics. This is due to their enhanced light-matter interactions in the visible to near-infrared range. Core-shell structures are particularly valuable for their maximized interfacial area. Here, the chemical vapor deposition synthesis of Si@MoS2 core-shells and extensive structural characterization are presented. Compared with traditional plasmonic cores, the silicon dielectric Mie resonator core offers low Ohmic losses and a wider spectrum of optical modes. The magnetic dipole (MD) mode of the silicon core efficiently couples with MoS2 through its large tangential component at the core surface. Using transmission electron microscopy and correlative single-particle scattering spectroscopy, MD mode splitting is experimentally demonstrated in this unique Si@MoS2 core-shell structure. This is evidence for resonance coupling, which is limited to theoretical proposals in this particular system. A coupling constant of 39 meV is achieved, which is ≈1.5-fold higher than previous reports of particle-on-film geometries with a smaller interfacial area. Finally, higher-order systems with the potential to tune properties are demonstrated through a dimer system of Si@MoS2 , forming the basis for emerging architectures for optoelectronic and nanophotonic applications.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article