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Near-infrared absorption imaging and processing technologies based on gold nanorods

  • Published:
Wuhan University Journal of Natural Sciences

Abstract

Noble metal nanoparticles with localized surface plasmon resonance (LSPR) properties are widely used as optical sensors in biochemical detection and medical diagnosis. In this paper, we propose an effective determination method to measure the LSPR absorption intensity of gold nanorods (GNRs). A near-infrared (NIR) imaging system is established, and an NIR absorption image of the multiple samples of the colloidal GNRs is captured. Then, the LSPR absorption intensities of these samples are obtained by calculating the average grayscale of the target areas based on the NIR image processing technology. By using this method, the LSPR absorption intensities of the multiple samples are determined all at once, and their accuracy is as high as that obtained by using spectrophotometry. These results suggest that this method is an efficient multi-channel determination technique with high-throughput sensing applications.

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Authors and Affiliations

  1. School of Physics and Technology/Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, Wuhan University, Wuhan, 430072, Hubei, China

    Qian Li, Hao Huang, Ming Chen & Xuefeng Yu

  2. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

    Zhe Li & Xuefeng Yu

Authors
  1. Qian Li
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  2. Hao Huang
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  3. Zhe Li
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  4. Ming Chen
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  5. Xuefeng Yu
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Corresponding author

Correspondence to Xuefeng Yu.

Additional information

Foundation item: Supported by the Natural Science Foundation of Jiangsu Province (SBK201240182).

Biography: LI Qian, female, Master candidate, research direction: detection of biological signal.

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Li, Q., Huang, H., Li, Z. et al. Near-infrared absorption imaging and processing technologies based on gold nanorods. Wuhan Univ. J. Nat. Sci. 18, 307–312 (2013). https://doi.org/10.1007/s11859-013-0933-9

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  • DOI: https://doi.org/10.1007/s11859-013-0933-9

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