A doughnut-shaped microstructure with single-handed helical feature has been created via the combination of bottom-up self-assembly and top-down solution depositing processes.
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Yagai, S. Toroid meets helix. Nat. Nanotechnol. 17, 1241–1242 (2022). https://doi.org/10.1038/s41565-022-01236-8
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DOI: https://doi.org/10.1038/s41565-022-01236-8
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