One-step synthesis of Hybrid inorganic-organic nanocomposite coatings by novel Laser Adaptive Ablation Deposition technique Valery Serbezov 1,2 , Sotir Sotirov 2 1 VSS-VS Ltd., 4000 Plovdiv, 55A Veliko Turnovo St., Bulgaria 2 University of Plovdiv, Faculty of Physics, 4000 Plovdiv, 24 Tzar Assen St., Bulgaria ABSTRACT A novel approach for one-step synthesis of hybrid inorganic-organic nanocomposite coatings by new modification of Pulsed Laser Deposition technology called Laser Adaptive Ablation Deposition (LAAD) is presented. Hybrid nanocomposite coatings including Mg- Rapamycin and Mg- Desoximetasone were produced by UV TEA N 2 laser under low vacuum (0.1 Pa) and room temperature onto substrates from SS 316L, KCl and NaCl. The laser fluence for Mg alloy was 1, 8 J/cm 2 and for Desoximetasone 0,176 J/cm 2 and for Rapamycin 0,118 J/cm 2 were respectively. The three- dimensional two-segmented single target was used to adapt the interaction of focused laser beam with inorganic and organic material. Magnesium alloy nanoparticles with sizes from 50 nm to 250 nm were obtained in organic matrices. The morphology of nanocomposites films were studied by Bright field / Fluorescence optical microscope and Scanning Electron Microscope (SEM). Fourier Transform Infrared (FTIR) spectroscopy measurements were applied in order to study the functional properties of organic component before and after the LAAD process. Energy Dispersive X-ray Spectroscopy (EDX) was used for identification of Mg alloy presence in hybrid nanocomposites coatings. The precise control of process parameters and particularly of the laser fluence adjustment enables transfer on materials with different physical chemical properties and one-step synthesis of complex inorganic- organic nanocomposites coatings. Keywords: Laser Adaptive Ablation Deposition, Hybrid nanocomposite, Metal-Drugs coatings, 1. INTRODUCTION The hybrid nanocomposite materials are novel materials which include minimum two materials blended on a molecular scale where one of structural components is in a range smaller than 100 nm 1 . Laser ablation is one of the new technologies for producing nanoparticles, nanostructures and nanocomposites coatings. The Pulsed Laser Deposition (PLD) method is based on laser ablation process. The goal of this technology nowadays is to obtain nanocomposites or hybrid coatings. The high energetic nature of PLD method is enabled only one-step synthesis of inorganic-inorganic nanocomposites coatings. One of the main problems for one-step synthesis of hybrid inorganic-organic PLD nanocomposites is the different energetic requirements for interaction between laser beam and inorganic or organic substance when they are deposited onto the substrate without damages of their functionality. It has been studied that the laser fluence necessary for the polymers and complex organic materials ablation is very small (from ten to hundreds of mJ.cm -2 ), whereas for ceramics, metals, metal alloys and other inorganic materials the necessary fluence has to be much higher (several to several tens J.cm -2 ) 2, 3, 4, 5. The recent attempts, which has been made to solve the problem described above, can be basically classified into three groups. A synthesis of hybrid inorganic-organic nanocomposites has used several steps at present in the process of the deposition, where the nanoparticles are added to target the outset. This approach is used at recently developed modification of PLD technique as Matrix Assisted Pulsed Laser Evaporation (MAPLE) 6, 7, 8 and Resonant Infra Red PLD (RIR PLD) 9,10,11 . Other solution is to separate each target material (so called multi-target system approach) and to vary the ratio of the laser pulses during the process of deposition 12,13 . The third approach is to employ single target, comprised of many discrete segments that are arranged into one plane 14, 15 . Combinations of multi-targets, multi laser beams and multi-laser-source approaches have been also discussed, including by using modern Ultra Fast Pulsed Laser Deposition (UFPLD) 16, 17 . Each of the proposed solutions has limited applicability and/or requires increased equipment costs. Synthesis of generally new class nanocomposites coatings (inorganic-organic for instance with very different thresholds of ablation) by using one step PLD process in one technological cycle and in one device can be very useful to be applied in sensors, biomedicine, pharmacy, energy and aerospace industry. *Corresponding author: Valery Serbezov, e-mail : serbezov@plov.net 17th International School on Quantum Electronics: Laser Physics and Applications, edited by Tanja Dreischuh, Albena Daskalova, Proc. of SPIE Vol. 8770, 87700F © 2013 SPIE · CCC code: 0277-786X/13/$18 · doi: 10.1117/12.2012003 Proc. of SPIE Vol. 8770 87700F-1