Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-020-19952-x
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Funding
- Australia-China Joint Research Centre for Point-of-Care Testing [ACSRF65827, SQ2017YFGH001190]
- Science and Technology Innovation Commission of Shenzhen [KQTD20170810110913065]
- National Natural Science Foundation of China (NSFC) [61729501, 51720105015]
- Australian Research Council (ARC) [DE200100074, DE180100669]
- NHMRC [GNT1160635]
- China Scholarship Council [201607950010]
- Australian Research Council [DE180100669, DE200100074] Funding Source: Australian Research Council
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Precise design and fabrication of heterogeneous nanostructures will enable nanoscale devices to integrate multiple desirable functionalities. But due to the diffraction limit (similar to 200nm), 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 210nm 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.
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