This paper reports temperature dispersion simulations of titania nanotubes irradiated by the 355 nm, pulsed, nanosecond laser. The modelling with the use of Finite Elements Method concerns titania nanotubes of the length and the wall thickness in the range of 0.5–2 μm and 5–20 nm, respectively. The uniqueness of the morphology was preserved by ensuring the wall thickness variation along the height of the tube, which was determined by an exponential equation. The easily adapted model of optical transition under the heat treatment in vacuum was successfully introduced. According to the obtained results, the change in titania nanotube shape and formation of the doping centres during laser annealing are crucial to accurately reproduce the temperature distribution along the nanotubes. The temperature profiles suggest that treatment with a fluence of 25 mJ cm−2 at 355 nm wavelength may lead to the re-solidification of the nanotubes surface only, if their wall is thinner than 15 nm. Such simulations are reported for the first time and are important for the understanding of thermal transport in nanomaterials with highly ordered, tubular architecture.
Authors
- Piotr Kupracz,
- Katarzyna Grochowska,
- Jakub Wawrzyniak link open in new tab ,
- dr hab. inż. Katarzyna Siuzdak
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.ijthermalsci.2020.106800
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2021
