About event
Update on the synthesis and characterization of new inorganic nanotubes (NTs) from 2D compounds, like W(S,Se)2 and core-shell NTs will be given. Several emerging quantum mechanical effects of such NTs will be discussed. The strong coupling between optical cavity modes confined in the nanotube and the exitonic transitions are being studied.1 Little-Parks oscillations of 1D superconductors2 and bulk photovoltaic effect3 are some of the hallmarks of curved 1D nanotubular structures. “Artificial recording eye” combining vison, storage and writing power has been established by a 4x4 array of WS2 nanotubes.4 Other effects will be discussed if time allows.
Different nanotubes from quaternary “misfit” layered compounds (MLC) have been realized over the last decade and a half. In one recent example, the strong chemical affinity of the rare-earth (RE) atoms towards sulfur atoms and that of selenium towards the tantalum atoms, led to the synthesis of highly anisotropic nanotubes, like RES-TaSe2 and RE-(TaSe2)2 (with RE=La, Sm) exhibiting extremely large (local) dipole moment.5 The high-temperature stability of such MLC nanotubes were studied with the help of synchrotron-based X-ray absorption and scattering techniques.6 Such nanotubes offer unique behavior, like 1D superconductivity, etc., suitable for quantum technologies.
References
1. S.S. Sinha et al., Small 2020, 16, 1904390 (2020).
2. Y. Sun et al., Nature Comm. 13, 5391 (2022).
3. Y.J. Zhang et al., Nature 570, 349-353 (2019).
4. Y. Sun et al., Nature Comm. 13, 5391 (2022).
5. M.B. Sreedhara et al., PNAS 118, 35 e2109945118 (2021).
6. A. Khadiev, M.B. Sreedhara, et al., Acc. Chem. Res. 57, 3243-3253 (2024).
