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Plasmon-Enhanced Second-Harmonic Generation Nanorulers with Ultrahigh Sensitivities.
Shen, Shaoxin; Meng, Lingyan; Zhang, Yuejiao; Han, Junbo; Ma, Zongwei; Hu, Shu; He, Yuhan; Li, Jianfeng; Ren, Bin; Shih, Tien-Mo; Wang, Zhaohui; Yang, Zhilin; Tian, Zhongqun.
Afiliación
  • Shen S; Department of Physics, Xiamen University , Xiamen 361005, China.
  • Meng L; Department of Physics, Xiamen University , Xiamen 361005, China.
  • Zhang Y; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • Han J; Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology , Wuhan 430074, China.
  • Ma Z; Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology , Wuhan 430074, China.
  • Hu S; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • He Y; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • Li J; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • Ren B; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • Shih TM; Department of Physics, Xiamen University , Xiamen 361005, China.
  • Wang Z; Institute for Complex Adaptive Matter, University of California , Davis, California 95616, United States.
  • Yang Z; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
  • Tian Z; Department of Physics, Xiamen University , Xiamen 361005, China.
Nano Lett ; 15(10): 6716-21, 2015 Oct 14.
Article en En | MEDLINE | ID: mdl-26372425
ABSTRACT
Attainment of spatial resolutions far below diffraction limits by means of optical methods constitutes a challenging task. Here, we design nonlinear nanorulers that are capable of accomplishing approximately 1 nm resolutions by utilizing the mechanism of plasmon-enhanced second-harmonic generation (PESHG). Through introducing Au@SiO2 (core@shell) shell-isolated nanoparticles, we strive to maneuver electric-field-related gap modes such that a reliable relationship between PESHG responses and gap sizes, represented by "PESHG nanoruler equation", can be obtained. Additionally validated by both experiments and simulations, we have transferred "hot spots" to the film-nanoparticle-gap region, ensuring that retrieved PESHG emissions nearly exclusively originate from this region and are significantly amplified. The PESHG nanoruler can be potentially developed as an ultrasensitive optical method for measuring nanoscale distances with higher spectral accuracies and signal-to-noise ratios.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: Nano Lett Año: 2015 Tipo del documento: Article País de afiliación: China
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: Nano Lett Año: 2015 Tipo del documento: Article País de afiliación: China