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Research Article

True-color real-time imaging and spectroscopy of carbon nanotubes on substrates using enhanced Rayleigh scattering

Wenyun Wu1,§, Jingying Yue1,§, Xiaoyang Lin1,§, Dongqi Li1,§, Fangqiang Zhu2, Xue Yin3, Jun Zhu3, Jiangtao Wang1, Jin Zhang1, Yuan Chen1, Xinhe Wang1, Tianyi Li1, Yujun He1, Xingcan Dai1( ), Peng Liu1, Yang Wei1, Jiaping Wang1,4, Wei Zhang5, Yidong Huang5, Li Fan1, Lina Zhang1, Qunqing Li1,4, Shoushan Fan1, Kaili Jiang1,4( )
State Key Laboratory of Low-Dimensional Quantum PhysicsDepartment of Physics & Tsinghua-Foxconn Nanotechnology Research CenterTsinghua UniversityBeijing100084China
Department of PhysicsIndiana University-Purdue University IndianapolisIndianapolis, IndianaUSA
State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentsTsinghua UniversityBeijing100084China
Collaborative Innovation Center of Quantum MatterBeijing100084China
Tsinghua National Laboratory for Information Science and TechnologyDepartment of Electronic EngineeringTsinghua UniversityBeijing100084China

§ These authors contributed equally to this work.

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Abstract

Single-walled carbon nanotubes (SWCNTs) illuminated by white light should appear colored due to resonance Rayleigh scattering. However, true-color imaging of SWCNTs on substrates has not been reported, because of the extremely low scattering intensity of SWCNTs and the strong substrate scattering. Here we show that Rayleigh scattering can be greatly enhanced by the interface dipole enhancement effect. Consequently colorful SWCNTs on substrates can be directly imaged under an optical microscope by wide field supercontinuum laser illumination, which facilitates high throughput chirality assignment of individual SWCNTs. This approach, termed "Rayleigh imaging microscopy", is not restricted to SWCNTs, but widely applicable to a variety of nanomaterials, which enables the colorful nanoworld to be explored under optical microscopes.

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Keywords

enhanced Rayleigh scatteringRayleigh imaging microscopytrue-color imagingcarbon nanotubeinterface dipole

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Nano Research
Volume 8 Issue 8,
August 2015
Pages 2721-2732
DOI: 10.1007/s12274-015-0779-x

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Cite this article:
Wu W, Yue J, Lin X, et al. True-color real-time imaging and spectroscopy of carbon nanotubes on substrates using enhanced Rayleigh scattering. Nano Research, 2015, 8(8): 2721-2732. https://doi.org/10.1007/s12274-015-0779-x

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Received: 14 February 2015
Revised: 27 March 2015
Accepted: 02 April 2015
Published: 29 August 2015
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015