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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Selected area electron diffraction (SAED) pattern obtained over a group of copper nanoparticles obtained by laser ablation with (a) Green-Nanosecond laser in air, (b) Green-Nanosecond laser in argon, (c) IR Picosecond laser in air, (d) IR-Picosecond laser in argon.