Ultrafast Laser Processing in Liquid Media


Contact Person(s):
Dr. Emmanuel Stratakis


The aim of the project is to investigate the formation of surface nanostructures and nanoparticles under ultrafast laser ablation of solids immersed in liquids.

Research Topics
Ultrafast Laser Micro- and Nano- processing

Abstract

Laser initiation of phase transitions at the solid-liquid interface results in the formation of self-organized nanostructures (NS) on the solid surface. Formation of NS is assigned to the instability of evaporation of the liquid that surrounds the irradiated target. At the same time dispersion of metallic or core-shell nanoparticles (NP) into the liquid occurs. The morphology of NS and NP generated on various metallic as well as non-metallic bulk solids is studied as the function of experimental parameters, such as laser pulse duration and target material. Formation of NS alters optical properties of the solid due to plasmon resonance of free electrons in NS. Distribution function of lateral sizes of NS usually exhibits two maxima and is transformed to a single maximum function upon decreasing laser fluence towards melting threshold of the solid. Formation of NS on pre-patterned substrates in a wide range of laser pulse durations from femto- to picoseconds is additionally studied. Furthermore the characteristic properties of NP/NS produced by temporally shaped ultrashort pulses are investigated.



Collaborators

G. A. Shafeev, Wave Research Center of A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences.

G. Viau, Laboratoire de Physique et Chimie des Nano-Objets, INSA de Toulouse.

A. G. Kanaras, Physics & Astronomy, University of Southampton.

 


Publications

  • Nano-textured W shows improvement of thermionic emission properties
    Barmina, E.V., Serkov, A.A., Stratakis, E., Fotakis, C., Stolyarov, V.N., Stolyarov, I.N., Shafeev, G.A., Applied Physics A, 106, 1-4., 2012

  • Laser-assisted nanostructuring of Tungsten in liquid environment
    Barmina, EV; Stratakis E; Barberoglou, M; Stolyarov, VN; Stolyarov, IN; Fotakis, C; Shafeev, GA, Applied Surface Science, 258, 5898, 2012

  • Porous nanoparticles of Al and Ti generated by laser ablation in liquid
    Kuzmin, PG; Shafeev, GA; Viau, G; Warot-Fonrose, B; Barberoglou, M; Stratakis E; Fotakis, C , Applied Surface Science, 258, 9283, 2012

  • Generation of nanostructures on metals by laser ablation in liquids: new results
    E.B. Barmina, E. Stratakis, C. Fotakis, G.A. Shafeev, Quantum Electronics, 40, 1012, 2010

  • Femtosecond laser writing of nanostructures on bulk Al via its ablation in air and liquids
    E. Stratakis, V. Zorba, M. Barberoglou, C. Fotakis, G.A. Shafeev, Applied Surface Science, 255, 5346, 2009

  • Laser writing of nanostructures on bulk Al via its ablation in liquids
    E. Stratakis, V. Zorba, M. Barberoglou, C. Fotakis, and G.A. Shafeev, Nanotechnology, 20, 105303, 2009

  • Surface nanotexturing of tantalum by laser ablation in water
    E. V. Barmina, M. Barberoglou, V. Zorba, A. V. Simakin, E. Stratakis, C. Fotakis, and G.A. Shafeev, Quantum Electronics, 39, 89, 2009

  • Generation of Al nanoparticles via ablation of bulk Al in liquids with short laser pulses
    E. Stratakis, M. Barberoglou, C. Fotakis, G. Viau, C. Garcia, and G. A. Shafeev, Optics Express, 17, 12650, 2009

Project Members
Mr. Panagiotis Kapizionis
Ms. Kyriaki Savva
Ms. Konstantina Alexaki
Ms. Maria Sygletoy
Mr. Ioannis Paradisanos
Dr. Emmanuel Stratakis
Prof. Costas Fotakis
Dr. Panagiotis Loukakos



Last Updated:  14/4/2013
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