Non-spherical Aluminum nanoparticles fabricated using picosecond laser ablation

Content Provider	Semantic Scholar
Author	Swamulu, A. Brahma Rao, S. Venugopal Podagatlapalli, Gopala Krishna
Copyright Year	2020
Abstract	In this article, we report the picosecond laser ablation of Aluminum targets immersed in a polar organic liquid [chloroform (CHCl3)] with ~2 ps laser pulses at an input energy of ~350 μJ. The synthesized Aluminum nanoparticles exhibited a surface plasmon resonance peak at ~340 nm. Scanning electron microscopic images of Al NPs demonstrated the spherical morphology with an average size ~27±3.6 nm. The formation of spherical Al nanoparticles at smaller dimension and seizing of further growth could be from the formation of electric double layers on the Al nanoparticles. In addition to spherical Aluminum nanoparticles, triangular/pentagonal/hexagonal nanoparticles were also observed in colloidal solution. Field Emission Scanning Electron Microscopic images of ablated Al targets demonstrate laser induced periodic surface structures (LIPSS). These are the high spatial frequency LIPSS (HSFL) since their grating period was ~270 nm. Additionally, coarse structures with a period ~700 nm were also observed.
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Alternate Webpage(s)	http://ijmmm.ustb.edu.cn/fileKWYJYCLXB/journal/article/ijmmm/newcreate/2019-0825.pdf
Language	English
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Content Type	Text
Resource Type	Article