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Near-Field Fluorescence and Topography Characterization of a Single Nanometre Fluorophore by Apertureless Tip-Enhanced Scanning Near-Field Microscopy |
| WU Xiao-Bin1;WANG Jia1;XU Ji-Ying1;WANG Rui1;TIAN Qian1;YU Jian-Yuan2 |
| 1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 1000842Analysis Center, Department of Chemistry, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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WU Xiao-Bin, WANG Jia, XU Ji-Ying et al 2007 Chin. Phys. Lett. 24 2525-2528 |
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Abstract Tip-enhanced near-field fluorescence and topography characterization of a single nanometre fluorophore is conducted by using an apertureless scanning near-field microscopy system. A fluorophore with size 80nm is mapped with a spatial resolution of 10nm. The corresponding near-field fluorescence data shows significant signal enhancement due to the apertureless tip-enhanced effect. With the nanometre spatial resolution capability and nanometre local tip-enhanced effect, the apertureless tip-enhanced scanning near-field microscopy may be further used to characterize a single molecule by realizing the local near-field spectrum assignment corresponding to topography at nanometre scale.
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| Keywords:
07.79.Fc
39.30.+w
68.37.Uv
78.67.-n
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Received: 26 January 2007
Published: 16 August 2007
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| PACS: |
07.79.Fc
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(Near-field scanning optical microscopes)
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39.30.+w
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68.37.Uv
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(Near-field scanning microscopy and spectroscopy)
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78.67.-n
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(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
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