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Enhanced Circular Dichroism for Achiral Sensing Based on a DNA-Origami-Empowered Anapole Metasurface.
Li, Chengfeng; He, Tao; Yang, Xu; Feng, Chao; Zhang, Zhanyi; Zhu, Jingyuan; Dong, Siyu; Shi, Yuzhi; Wei, Zeyong; Jiao, Hongfei; Zhang, Yinan; Liu, Huajie; Wang, Zhanshan; Cheng, Xinbin.
Afiliación
  • Li C; Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
  • He T; MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai 200092, China.
  • Yang X; Shanghai Frontiers Science Center of Digital Optics, Shanghai 200092, China.
  • Feng C; Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai 200092, China.
  • Zhang Z; Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications, Shanghai 200092, China.
  • Zhu J; Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
  • Dong S; MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai 200092, China.
  • Shi Y; Shanghai Frontiers Science Center of Digital Optics, Shanghai 200092, China.
  • Wei Z; Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai 200092, China.
  • Jiao H; Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications, Shanghai 200092, China.
  • Zhang Y; School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
  • Liu H; Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
  • Wang Z; MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai 200092, China.
  • Cheng X; Shanghai Frontiers Science Center of Digital Optics, Shanghai 200092, China.
Nano Lett ; 24(31): 9451-9458, 2024 Aug 07.
Article en En | MEDLINE | ID: mdl-38976602
ABSTRACT
Circular dichroism (CD) spectroscopy has been extensively utilized for detecting and distinguishing the chirality of diverse substances and structures. However, CD spectroscopy is inherently weak and conventionally associated with chiral sensing, thus constraining its range of applications. Here, we report a DNA-origami-empowered metasurface sensing platform through the collaborative effect of metasurfaces and DNA origami, enabling achiral/slightly chiral sensing with high sensitivity via the enhanced ΔCD. An anapole metasurface, boasting over 60 times the average optical chirality enhancement, was elaborately designed to synergize with reconfigurable DNA origami. We experimentally demonstrated the detection of achiral/slightly chiral DNA linker strands via the enhanced ΔCD of the proposed platform, whose sensitivity was a 10-fold enhancement compared with the platform without metasurfaces. Our work presents a high-sensitivity platform for achiral/slightly chiral sensing through chiral spectroscopy, expanding the capabilities of chiral spectroscopy and inspiring the integration of multifunctional artificial nanostructures across diverse domains.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos