Phys.org March 23, 2023
Liquid-phase chemical exfoliation can achieve industry-scale production of 2D materials for a wide range of applications. However, because of their sensitivity to air and depreciation of physical performance many 2D materials cannot be used for practical application. An international team of researchers (USA – Princeton, Rutgers Universty, Germany) has developed a chemical exfoliation method to create a stable, aqueous, surfactant-free, superconducting ink containing phase-pure 1T”S2 monolayers that are isostructural to the air-sensitive topological insulator 1T′-WTe2. The printed film was metallic at room temperature and superconducting below 7.3 kelvin, showed strong anisotropic unconventional superconducting behavior with an in-plane and out-of-plane upper critical magnetic field of 30.1 and 5.3 tesla, and was stable at ambient conditions for at least 30 days. According to the researchers their work showed that chemical processing can make nontrivial 2D materials for commercial use… read more. Open Access TECHNICAL ARTICLEÂ
Superconducting properties of the printed 1T′-WS2 film. Credit: SCIENCE ADVANCES, 22 Mar 2023, Vol 9, Issue 12