Nanorods with multidimensional optical information beyond the diffraction limit

Shihui Wen, Yongtao Liu, Fan Wang, Gungun Lin, Jiajia Zhou, Bingyang Shi, Yung Doug Suh and Dayong Jin ()
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Shihui Wen: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney
Yongtao Liu: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney
Fan Wang: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney
Gungun Lin: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney
Jiajia Zhou: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney
Bingyang Shi: Centre for Motor Neuron Disease Research, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University
Yung Doug Suh: Laboratory for Advanced Molecular Probing, Research Center for Bio Platform Technology, Korea Research Institute of Chemical Technology
Dayong Jin: Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Precise design and fabrication of heterogeneous nanostructures will enable nanoscale devices to integrate multiple desirable functionalities. But due to the diffraction limit (~200 nm), the optical uniformity and diversity within the heterogeneous functional nanostructures are hardly controlled and characterized. Here, we report a set of heterogeneous nanorods; each optically active section has its unique nonlinear response to donut-shaped illumination, so that one can discern each section with super-resolution. To achieve this, we first realize an approach of highly controlled epitaxial growth and produce a range of heterogeneous structures. Each section along the nanorod structure displays tunable upconversion emissions, in four optical dimensions, including color, lifetime, excitation wavelength, and power dependency. Moreover, we demonstrate a 210 nm single nanorod as an extremely small polychromatic light source for the on-demand generation of RGB photonic emissions. This work benchmarks our ability toward the full control of sub-diffraction-limit optical diversities of single heterogeneous nanoparticles.

Date: 2020
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DOI: 10.1038/s41467-020-19952-x

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