Tailored Monometal, Oxide and Alloyed Nanoparticles by Laser Ablation/Irradiation in Liquid ‎

by Mr. Yaakov Monsa

Ben-Gurion University of the Negev

at Quantum optics seminar

Wed, 17 Nov 2021, 15:00
ZOOM only

Abstract

This is a student seminar.

Zoom Link: https://us02web.zoom.us/j/87109224094

Abstract:
Nanoparticles (NPs) and nanomaterials attract much attention due to their structural diversities, high surface areas, and nanoscale sizes, which lead to unique physical and chemical properties. Here, I will present newly developed schemes, which we introduced for synthesizing and manipulating NPs by nanosecond pulsed laser ablation/irradiation in liquid (PLAL/PLIL). These approaches include unique approaches of PLIL for alloying palladium/copper (Pd/Cu) and size-controlling cerium oxide (CeO2) NPs, and experimental schemes for enhancing the PLAL mass productivity of monometal NPs. The proposed schemes for PLIL are guided by the results of Mie-theory and predictions of the heating-melting-evaporation model, and for PLAL by ablating targets covered by thin layers of liquid, estimated by flow-dynamics and fluid-statics theorems. These PLIL and PLAL configurations, paired with state-of-the-art characterization methods, led to resulting NPs with unique features, providing new insight into their growth and generation mechanisms and dynamics. These studies open a new window toward the opportunity for advanced approaches for synthesizing tailored NPs by PLIL and PLAL with high yields and concentrations and significantly enhance our understanding of the explored processes.

The lecture will be given in Hebrew.

Created on 14-11-2021 by Folman, Ron (folman)
Updaded on 14-11-2021 by Folman, Ron (folman)