Metal oxide hollow nanoparticles formation by a single nanosecond pulsed laser ablation in liquid
- 199 Downloads
In this study, the trend of metal oxide hollow nanoparticles formation is experimentally inspected by a single nanosecond pulsed laser ablation of a bulk metal material in water and/or ethanol. Analysis results by transmission electron microscope indicate that the hollow formation can be completed or initiated by a single nanosecond laser pulse, dictated by the diffusive thermo-chemical and/or bubble-assisted assembly mechanisms, depending on the surrounding liquid medium and laser parameters. The results not only provide experimental clues to unveiling complex mechanisms involved with the hollow formation by the multiple laser shots but also will contribute to improving the hollow particle production efficiency.
This research was supported by a Grant (code# 14CTAP-C086566-01-000000) from Technology Advancement Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. The electron microscope analysis was performed at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. Authors appreciate Dr. T. J. Kim (Chemical Engineering Department, Stony Brook University) for discussion on compositional analysis.
- 27.E.V. Barmina, A.V. Simakin, G.A. Shafeev, Chem. Phys. Lett. 655, 3538 (2016)Google Scholar