Fabrication and transformation of dense SnO2 via laser ablation condensation

Pulsed Laser Ablation Induced Fragmentation, Transformation, Internal Stress, Sn2+/H+ Cosignature, and Optical Property Change of SnO2 Powders in Water

“…Laser ablation on bulk SnO 2 has been used to form rutile-type nanoribbons . However, pulsed laser ablation (PLA) on a metallic Sn plate in oxygen ambient was used to form rutile-type nanocondensates with planar defects due to a coalescence event and to condense minor SnO 2 nanoparticles with a fluorite-type derived dense structure due to very rapid heating and cooling effects of the PLA process …”

“…15 However, pulsed laser ablation (PLA) on a metallic Sn plate in oxygen ambient was used to form rutile-type nanocondensates with planar defects due to a coalescence event 16 and to condense minor SnO 2 nanoparticles with a fluorite-type derived dense structure due to very rapid heating and cooling effects of the PLA process. 17 Here, PLA on floating powders in liquid (PLAL), a simple physical chemical process commonly adopted for the fragmentation of noble metals 18À22 and copper oxide, 23 was extended to oxide, i.e., rutile-type SnO 2 . We focused on (1) the internal stress, (2) the Sn 2+ /H + cosignature, (3) the phase change into a highpressured stabilized type with shear-induced planar defects, and (4) the resultant band gap narrowing of the SnO 2 nanoparticles subjected to PLAL fragmentation.…”

The Fabrication of Micro/Nano Structures by Laser Machining

“…Dense SnO 2 nanocondensates having specific shapes, sizes, and phase transitions to relatively stable phases had possible applications for optoelectronic/catalytic applications. In 2009, W. Tseng, et al introduced the synthesis of dense SnO 2 nanocondensates with fluorite-related structures using PLA technology [258]. In 2009, Y. Wang et al reported the fabrication of plasma sprayed nanostructured coatings on titanium alloy (Ti-6Al-4V) substrates using the prepared nanostructured Al 2 O 3 -13 wt% TiO 2 feedstock.…”

Laser micro-structuring of magnetron-sputtered SnOx thin films as anode material for lithium ion batteries

“…Two reflections at 2h = 24.48°and 2h = 31.52°are visible, possibly corresponding to a orthorhombic SnO 2 phase, that was initially detected during high pressure experiments (Haines and Leger 1997;Jiang et al 2001). Yet, the occurrence of this phase has been reported for rf magnetron sputtering (Mukhamedshina et al 2006) and other non-equilibrium manufacturing processes as well (Lamelas and Reid 1999;Tseng et al 2009). …”