Fabrication of chiral assemblies of plasmonic nanoparticles is a highly attractive and challenging task, with promising applications in light emission, detection, and sensing. So far, primarily organic chiral templates have been used for chirality inscription. Despite recent progress in using chiral ionic liquids in synthesis, the use of organic templates significantly limits the variety of nanoparticle preparation techniques. Here, we demonstrate the utilization of seemingly achiral inorganic nanotubes as templates for the chiral assembly of nanoparticles. We show that both metallic and dielectric nanoparticles can be attached to scroll-like chiral edges propagating on the surfaces of WS2 nanotubes. Such assembly can be performed at temperatures as high as 550 °C. This large temperature range significantly widens the portfolio of nanoparticle fabrication techniques, allowing us to demonstrate a variety of chiral nanoparticle assemblies, ranging from metals (Au, Ga), semiconductors (Ge), and compound semiconductors (GaAs) to oxides (WO3).

CEITEC BUT Brno University of Technology Purkyňova 123 612 00 Brno Czech Republic

Faculty of Sciences Holon Institute of Technology 52 Golomb St Holon 5810201 Israel

Institute of Physical Engineering Brno University of Technology Technická 2 616 69 Brno Czech Republic

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Submillimeter-Long WS2 Nanotubes: The Pathway to Inorganic Buckypaper