20.500.12556/RUL-174448 Karakterizacija nanolusk $\mathrm{Mo_{1-x}W_xS_2}$ z Ramansko spektroskopijo in s kontaktno mikroskopijo na atomsko silo Characterization of $\mathrm{Mo_{1-x}W_xS_2}$ nanoscales by Raman spectroscopy and contact-mode atomic force microscopy V zaključnem delu sem sintetizirala in karakterizirala nanoluske $\mathrm{Mo_{1-x}W_xS_2}$, ki rastejo iz parne faze elementov molibdena, volframa in žvepla med kemijsko transportno reakcijo. Površinsko strukturo in topografijo nanolusk sem raziskala s kontaktno mikroskopijo na atomsko silo (c-AFM). Osredotočila sem se na višinske profile lusk, iz katerih sem ocenila debelino posamezne plasti $\mathrm{Mo_{1-x}W_xS_2}$. Optične lastnosti lusk sem raziskala s konfokalno Ramansko spektroskopijo, s katero sem določila Ramansko aktivna vibracijska stanja. Primerjala sem spektre posnete s 532 nm in 633 nm vzbujevalnima valovnima dolžinama. Z Ramanskim kartiranjem preko nanoluske sem identificirala lokalne kemijske razlike na nanoluskah. V nalogi sem se osredotočila na uporabo omenjenih metod pri karakterizaciji nanostrukturnih ternarnih materialov na primeru nanolusk $\mathrm{Mo_{1-x}W_xS_2}$. For my thesis, I synthesized and characterized $\mathrm{Mo_{1-x}W_xS_2}$ nanoflakes that grow from the vapor phase of the elements molybdenum, tungsten and sulphur during chemical vapor transport reaction. I investigated the surface structure and topography of the flakes using contact atomic force microscopy (c-AFM). I focused on measurements of height profiles from which I estimated the thickness of $\mathrm{Mo_{1-x}W_xS_2}$ single layer. I investigated the optical properties of the flakes using confocal Raman spectroscopy to determine the Raman active vibrational modes. I compared the spectra obtained with 532 nm and 633 nm excitational wavelengths. I identified local chemical differences across flakes using Raman mapping. The thesis is focused on the application of the mentioned methods for the characterization of the nanostructured ternary materials, using $\mathrm{Mo_{1-x}W_xS_2}$ flakes as an example. $\mathrm{Mo_{1-x}W_xS_2}$ nanoluske kemijska transportna reakcija (CVT) kontaktna mikroskopija na atomsko silo (c-AFM) konfokalna Ramanska spektroskopija $\mathrm{Mo_{1-x}W_xS_2}$ nanoflakes chemical vapor transport (CVT) contact-mode atomic force microscopy (c-AFM) confocal Raman spectroscopy. true false false Slovenski jezik Angleški jezik Zaključna naloga 2025-10-02 14:33:05 2025-10-02 14:33:05 2025-11-12 03:32:36 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 155147 249614083 20408.pdf 20408.pdf 1 6BBFA111BDA795D461DB04A220C205CD 21362e7161cb6a9d46727d78d8d68873e3603b1597ab80729ae06d0466819877 bd17e46a-9f8b-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=219261 Fakulteta za matematiko in fiziko 0 0 0