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Hot Spot Engineering in Hierarchical Plasmonic Nanostructures.
Yang, Xi; Su, Dong; Yu, Xie; Zeng, Pei; Liang, Huageng; Zhang, Guangzu; Song, Boxiang; Jiang, Shenglin.
Afiliación
  • Yang X; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
  • Su D; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
  • Yu X; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
  • Zeng P; Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China.
  • Liang H; Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China.
  • Zhang G; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
  • Song B; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
  • Jiang S; School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
Small ; 19(22): e2205659, 2023 Jun.
Article en En | MEDLINE | ID: mdl-36905245
The controllable nanogap structures offer an effective way to obtain strong and tunable localized surface plasmon resonance (LSPR). A novel hierarchical plasmonic nanostructure (HPN) is created by incorporating a rotating coordinate system into colloidal lithography. In this nanostructure, the hot spot density is increased drastically by the long-range ordered morphology with discrete metal islands filled in the structural units. Based on the Volmer-Weber growth theory, the precise HPN growth model is established, which guides the hot spot engineering for improved LSPR tunability and strong field enhancement. The hot spot engineering strategy is examined by the application of HPNs as the surface-enhanced Raman spectroscopy (SERS) substrate. It is universally suitable for various SERS characterization excited at different wavelengths. Based on the HPN and hot spot engineering strategy, single-molecule level detection and long-range mapping can be realized simultaneously. In that sense, it offers a great platform and guides the future design for various LSPR applications like surface-enhanced spectra, biosensing, and photocatalysis.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article
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