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European Materials Research Society - EMRS Spring meeting

Julie Ailuno et Ksenia Maximova, doctorantes au LP3, reviennent de l’EMRS (spring meeting 2013) avec deux prix du meilleur poster du symposium laser

Julie Ailuno : ‘Laser-induced forward transfer of silver nanoparticles paste for membrane switch printing on flexible substrates’ The Laser-Induced Forward Transfer (LIFT) is an innovative approach to print a wide range of materials with high resolution. This process has already been successfully used to print OTFTs, OLEDs, sensors and biosensors. The studies presented at EMRS focus on the transfer dynamics of silver nanoparticle pastes and the printing of conductive structures. Electrical, morphological and mechanical properties of the structures have been characterized and printed membrane switches have been successfully realized.

Rapp L., Ailuno J., Alloncle A.-P., Delaporte Ph., ‘Pulsed-laser printing of silver nanoparticles ink : control of morphological properties’, Optics Express 19 (22), pp. 21563–21574, (2011) 2D structures of silver nanoparticle inks laser-printed on flexible substrate

Ksenia Maximova : ‘Synthesis of inorganic nanomaterials by ultrashort laser ablation in liquids’. We reviewed our on-going activity on the laser synthesis of inorganic nanoparticles with controlled size and composition, and their further functionalization. We used two types of materials with proven biocompatibility : gold and Si/SiOx nanoparticles. For Si-based nanoparticles we proposed a synthetic route combining mechanical milling and laser fragmentation. This method benefits the 3D-geometry of the femtosecond laser ablation and allows us to control the size and the depth of the oxide layer on the surface of the nanoparticles. We also elaborated two-step synthesis of gold nanoparticles, including laser ablation of a solid target followed by a laser fragmentation. Our tests showed the produced nanoparticles are non-toxic for human cells, but in the same time they are able to penetrate cell membranes. This opens the possibility to use the obtained nanomaterials as drug-carrying vectors.

Blandin, P. ; Maximova, K.A. ; Gongalsky, M.B. ; Sanchez-Royo, J.F. ; Chirvony, V.S. ; Sentis, M. ; Timoshenko, V.Yu. ; Kabashin, A.V. J. Mater. Chem. B. 2013, 1, 2489-2495 Gold nanoparticles synthesized by the femtosecond laser ablation in the aqueous solution of PEG