20.500.12556/DiRROS-22347 Electrical properties of collapsed ▫$MoS_2$▫ nanotubes Molybdenum disulfide (MoS2) is a promising material for future high-performance and ultra-low-power electronics. Growth from a vapor phase at chemical equilibrium enables the production of crystals possessing a relatively low density of structural defects. Besides thin MoS2 flakes, MoS2 nanotubes (NTs) and collapsed NTs in the shape of nanoribbons (NRs) are also synthesized in the same growth process. Here, we present the first study on the structural and electrical properties of the NRs. High resolution electron microscopy revealed a chiral structure of the NRs with no peculiarities at the inner interface where both walls are in contact. In contrast, resonant Raman spectroscopy revealed the presence of bands typical of a few layers thick MoS2, suggesting that some of the layers of the NR are partially split. Contact current imaging spectroscopy (CCIS) revealed longitudinal wrinkles on the NR surface, with elevated regions found to be more conductive than the depressed areas. The edges of the NR, where molecular layers are strongly curved but not broken, exhibit varying conductivity. While some parts exhibit zero conductivity, others show much higher conductivity than the central part of the NR, suggesting an electron confinement effect. Charge injections strongly altered the NR’s work function and induced changes in the NR’s topography. The surface wrinkling was intensified, and the NR tended to rotate around its longitudinal axis. This rotation is explained as the reverse piezoelectric effect. kvantna elektronika superprevodnost nanomateriali true false false The Royal Society of Chemistry ZDA Angleški jezik Slovenski jezik Neznano 2025-05-16 10:15:21 2025-05-16 10:15:21 2025-10-24 03:51:06 0000-00-00 00:00:00 2025 0 0 str. 12361–12370 iss. 19 Vol. 17 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-01-20 2025-04-08 2025-04-28 539 2040-3364 10.1039/D5NR00284B 236103427 https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr00284b 1 ea65e20d-322d-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32332 RAZ_Malok_Matjaz_2025.pdf RAZ_Malok_Matjaz_2025.pdf 1 FB7277C9C91AAD96542A4ED261436179 07521832fae1a1ce225f2fd8aa6ffeed01259fb956673859bce684cbaf76d8fe 2cd0f5c9-3231-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32333 Institut Jožef Stefan 0 0 0