Deposition of biopolymer thin films by matrix assisted pulsed laser evaporation |
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| Authors: | R. Cristescu D. Mihaiescu G. Socol I. Stamatin I.N. Mihailescu D.B. Chrisey |
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| Affiliation: | (1) National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, 077125 Bucharest-Magurele, Romania;(2) University of Agriculture Sciences and Veterinary Medicine, 59 Marasti, Bucharest, Romania;(3) Faculty of Physics, University of Bucharest, P.O. Box MG-11, 100125 Bucharest-Magurele, Romania;(4) US Naval Research Laboratory, Washington, D.C. 20375-5345, USA |
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| Abstract: | We report on the successful deposition of high quality type I fibrilar collagen thin films by Matrix assisted pulsed laser evaporation (MAPLE). Thin films deposition was performed in a N2 ambient (20 Pa) using a KrF* laser source ( =248 nm,  20 ns) operated at a repetition rate of 3 Hz, the incident laser energy at a value within the range (20-35) mJ , and the laser spot area was (3.5-18.5)±0.1 mm2. The collagen films were deposited on double face polished  100 single crystalline Si wafers and characterized by Fourier transform infrared spectroscopy, atomic force microscopy and high-resolution transmission electron microscopy. We demonstrate that our thin films are composed of collagen, with no impurities and the roughness can be controlled by the deposition conditions. PACS 52.38.Mf; 82.35.Pq; 83.80.Lz |
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