Phys.org March 6, 2023
A class of 3D atomic wires of transition metal chalcogenides (TMC) structures consisting of bundles of TMC nanofibers held together by metallic atoms in between the fibers, all forming a well-ordered lattice in its cross section are of particular interest. Depending on the choice of metal, the structure could even be made to become a superconductor. Researchers in Japan demonstrated versatile method to fabricate indium (In)-intercalated W6Te6 (In–W6Te6) bundles with a nanoscale thickness. Atomic-resolution electron microscopy revealed that In atoms were surrounded by three adjacent W6Te6 wires. First-principles calculations suggested that their wire-by-wire stacking can transform through postgrowth intercalation. Individual In–W6Te6 bundles exhibited metallic behavior, as theoretically predicted. They identified the vibrational modes by combining polarized Raman spectroscopy and nonresonant Raman calculations. The team’s technique is not only limited to indium and tungsten telluride, nor to this particular structure. They hope their work might inspire a new chapter for nanomaterial development and the study of their unique properties… read more.Â
TECHNICAL ARTICLEÂ
Graphical abstract. Credit: ACS Nano 2023, XXXX, XXX, XXX-XXX, February 23, 2023Â