CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Absorption Range and Energy Shift of Surface Plasmon in Au Monomer and Dimer |
Xiao-Kun Zhao1,2, Yuan Yao2**, Pei-Lin Lang1, Hong-Lian Guo2, Xi Shen2, Yan-Guo Wang2, Ri-Cheng Yu2 |
1School of Science, Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876 2Beijing National Laboratory of Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190
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Cite this article: |
Xiao-Kun Zhao, Yuan Yao, Pei-Lin Lang et al 2016 Chin. Phys. Lett. 33 026802 |
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Abstract The resonance behaviors of local surface plasmon resonance in Au monomer and dimer are characterized systemically by electron energy loss spectroscopy in a scanning transmission electron microscope. The measured absorption range is about 20 nm larger than the physical size of the Au nanoparticles and the resonance peak energy shows a red shift when the electron beam passes off the nanoparticles. The Au dimer displays similar behaviors. Numerical simulation also reproduces those experimental results.
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Received: 19 October 2015
Published: 26 February 2016
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PACS: |
68.37.Ma
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(Scanning transmission electron microscopy (STEM))
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68.37.Og
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(High-resolution transmission electron microscopy (HRTEM))
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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79.20.Uv
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(Electron energy loss spectroscopy)
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71.45.Lr
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(Charge-density-wave systems)
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