Please use this identifier to cite or link to this item:
|Title:||Nano-scale quasi-melting of alkali-borosilicate glasses under electron irradiation||Authors:||M�bus G.
|Issue Date:||2010||Publisher:||ScienceDirect||Citation:||M�bus G., Ojovan M., Cook S., Tsai J., Yang G. (2010). Nano-scale quasi-melting of alkali-borosilicate glasses under electron irradiation. Journal of Nuclear Materials 396 : 264-271. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jnucmat.2009.11.020||Abstract:||Quasi-melting of micro- and nano-samples during transmission electron microscope irradiation of glassy materials is analysed. Overheating and true melting by the electron beam is shown not to be an explanation due to the ultra-sharp boundary between transformed and intact material. We propose that the observed fluidisation (quasi-melting) of glasses can be caused by effective bond breaking processes induced by the energetic electrons in the electron beam. The bond breaking processes modify the effective viscosity of glasses to a low activation energy regime. The higher the electron flux density the lower is the viscosity. Quasi-melting of glasses at high enough electron flux densities can result in shape modification of nano-sized particles including formation of perfect beads due to surface tension. Accompanying effects, such as bubble formation and foil bending are revisited in the light of the new interpretation. � 2009 Elsevier B.V. All rights reserved.||Source Title:||Journal of Nuclear Materials||URI:||http://scholarbank.nus.edu.sg/handle/10635/149273||ISSN:||223115||DOI:||10.1016/j.jnucmat.2009.11.020|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 18, 2020
WEB OF SCIENCETM
checked on Dec 26, 2018
checked on Oct 16, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.