Submicron Laser-Induced Dot, Ripple and Wrinkle Structures and Their Applications
Polymers exposed to laser or plasma treatment or modified with different wet methods which enable the introduction of nanoparticles or biologically active species, such as amino-acids, may find many applications both as biocompatible or anti-bacterial materials or on the contrary, can be applied for a decrease in the number of cells on the treated surface which opens application in single cell units. For the experiments, two types of materials were chosen, a representative of non-biodegradable polymers, polyethersulphone (PES) and polyhydroxybutyrate (PHB) as biodegradable material. Exposure of solid substrate to laser well below the ablation threshold can lead to formation of various surface structures. The ripples have a period roughly comparable to the wavelength of the incident laser radiation, and their dimensions depend on many factors, such as chemical composition of the polymer substrate, laser wavelength and the angle of incidence. On the contrary, biopolymers may significantly change their surface roughness and thus influence cell compatibility. The focus was on the surface treatment of PES and PHB by pulse excimer KrF laser with wavelength of 248 nm. The changes of physicochemical properties, surface morphology, surface chemistry and ablation of exposed polymers were studied both for PES and PHB. Several analytical methods involving atomic force microscopy, gravimetry, scanning electron microscopy and others were used for the analysis of the treated surface. It was found that the combination of certain input parameters leads not only to the formation of optimal narrow pattern, but to the combination of a ripple and a wrinkle-like structure, which could be an optimal candidate for cell attachment. The interaction of different types of cells and their interactions with the laser exposed surface were studied. It was found that laser treatment contributes as a major factor for wettability/contact angle change. The combination of optimal laser energy and pulse number was used for the construction of a surface with an anti-cellular response. Due to the simple laser treatment, we were able to prepare a biopolymer surface with higher roughness and thus significantly influence the area of growth of different types of cells (U-2 OS cells).
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 R. Rai, M. Tallawi, A. R. Boccaccini, "Synthesis, properties and biomedical applications of poly (glycerol sebacate) (PGS): A review, "Prog. Polym. Sci., vol. 37, pp. 1051-1078, 2012.
 S. Bauer, P. Schmuki, K. von der Mark, J. Park, "Engineering biocompatible implant surfaces: Part I: Materials and surfaces," Prog. Mater. Sci., vol. 58, pp. 261-326, 2013.
 J.J. Yoon, S. H. Song, D. Sung Lee, T. Gwan Park, "Immobilization of cell adhesive RGD peptide onto the surface of highly porous biodegradable polymer scaffolds fabricated by a gas foaming/salt leaching method," Biomaterials, vol. 25, pp. 5613-5620, 2004.
 I. Armentano, M. Dottori, E. Fortunati, S. Mattioli, J. M. Kenny, "Biodegradable polymer matrix nanocomposites for tissue engineering," Polym. Degrad. Stabil, vol. 95, pp. 2126-2146, 2010.
 M. Ozdemir, H. Sadikoglu, "Polymer A new and emerging technology: Laser-induced surface modification of polymers," Trends. Food. Sci. Technol., vol. 9, pp. 159–167, 1998.
 J. M. Goddard, J. H. Hotchkiss, "Polymer surface modification for the attachment of bioactive compounds," Progr. Polym. Sci., vol. 32, pp. 698–725, 2007.
 L. J. Lee, "Polymer nanoengineering for biomedical applications," Ann. Biomed. Eng., vol. 34, pp. 75-88, 2006.
 A. Biswas, I. S. Bayer, A. S. Biris, T. Wang, E. Dervishi, F. Faupel, "Advances in top-down and bottom–up surface nanofabrication: Techniques, applications & future prospects," Adv. Coll. Interf. Sci., vol. 170, pp. 2-27, 2012.
 L. Persano, A. Camposeo, D. Pisignan, "Integrated bottom-up and top-down soft lithographies and microfabrication approaches to multifunctional polymers," J. Mater. Chem. C, vol. 1, pp. 7663-7680, 2013.
 Z. Nie, E. Kumacheva, "Patterning surfaces with functional polymers," Nature Mater., vol. 7, pp. 277-290, 2008.
 E. Sancaktar, H. Lu, "The Effects of Excimer Laser Irradiation at 248 nm on the Surface Mass Loss and Thermal Properties of PS, ABS, PA6, and PC Polymers," J. Appl. Polym. Sci., vol. 99, pp. 1024-1037, 2006.
 A. Borowiec, H. K. Haugen, "Subwavelength ripple formation on the surfaces of compound semiconductors irradiated with femtosecond laser pulses", Appl. Phys. Lett., vol. 82, pp. 4462-4464, 2003.
 P. Slepička, O. Neděla, P. Sajdl, Z. Kolská, V.Švorčík, "Polyethylene naphthalate as an excellent candidate for ripplenanopatterning," Appl. Surf. Sci., vol. 285P, pp. 885– 892, 2013.
 F. Frost, B. Rauschenbach, " Surface engineering with ion beams: from self-organized nanostructures to ultra-smooth surfaces," Appl. Phys. Mater. Sci. Process., vol. 77, pp. 1-9, 2003.
 J. J. Ramsden, D. M. Allen, D. J. Stephenson, J. R. Alcock, G. N. Peggs, G. Fuller, "The Design and Manufacture of Biomedical Surfaces," CIRP Annals Manuf. Sci. Technol., vol. 56, pp. 687–711, 2007.
 J. Siegel, P. Slepička, J. Heitz, Z. Kolská, P. Sajdl, V. Švorčík, "Gold nano-wires and nano-layers at laser-induced nano-ripples on PET", Appl. Surf. Sci., vol. 256, pp. 2205–2209, 2010.
 Q. D. Ling, D. J. Liaw, C. Zhu, D. S. H. Chan, E. T. Kang, K. G. Neoh, "Polymer electronic memories: Materials, devices and mechanisms", Prog. Polym. Sci., vol. 33, pp. 917–78, 2008.
 P. Slepička, A. Chaloupka, P. Sajdl, J. Heitz, V. Hnatowicz, V. Švorčík, "Angle dependent laser nanopatterning of poly(ethylene terephthalate) surfaces", Appl. Surf. Sci., vol. 257. pp. 6021–6025, 2011.
 R. Krajcar, J. Siegel, P. Slepička, P. Fitl, V. Švorčík, "Silver nanowires prepared on PET structured by laser irradiation", Mater. Lett., vol. 117, pp. 184–187, 2014.
 O. Neděla, P. Slepička, J. Malý, M. Štofík, V. Švorčík, "Laser-induced nanostructures on a polymer irradiated through a contact mask", Appl. Surf. Sci., vol. 321, pp. 173–178, 2014.
 P. Slepička, O. Neděla, J. Siegel, R. Krajcar, Z. Kolská, V.Švorčík, "Ripple polystyrene nano-pattern induced by KrF laser", eXPRESS Polym. Lett., vol. 8, pp. 459–466, 2014.
 I. Michaljaničová, P.Slepička, M.Veselý, Z.Kolská, V. Švorčík, "Nanowires and nanodots prepared with polarized KrF laser on polyethersulphone", Mater. Lett., vol. 144, pp.15-18, 2015.
 S. Pérez, E. Rebollar, M. Oujja, M. Martín, M. Castillejo, "Laser-induced periodic surface structuring of biopolymers", Appl. Phys. A, vol. 110, pp. 683–690, 2013.
 M. S. Shoichet, "Polymer Scaffolds for Biomaterials Applications", Macromolecules, vol. 43, pp. 581–591, 2010.
 F. Molina-Lopez, R. E. de Araújo, M. Jarrier, J. Courbat, D. Briand, N. F. de Rooij, "Study of bending reliability and electrical properties of platinum lines on flexible polyimide substrates", Microelectronics Rel., vol. 54, pp. 2542-2549, 2014.
 P. Slepicka, I. Michaljanicova, P. Sajdl, P. Fitl, V. Svorcik, "Surface ablation of PLLA induced by KrF excimer laser", Appl. Surf. Sci., vol. 283, pp. 438-444, 2013.
 I. Michaljanicova, P. Slepicka, J. Heitz, R.A. Barb, P. Sajdl, V. Svorcik, "Comparison of KrF and ArF excimer laser treatment of biopolymer surface", Appl. Surf. Sci., vol. 339, pp. 144-150, 2015.
 Y. F. Li, C. J. Wu, Y. J. Sheng, H. K. Tsao, "Facile manipulation of receding contact angles of a substrate by roughening and fluorination", Appl. Surf. Sci., vol. 355, pp. 127–132, 2015.
 H. Hiraoka, M. Sendova, "Laser induced sub-half-micrometer periodic structure on polymer surfaces", Appl. Phys. Lett., vol. 64, pp. 563-565, 1994.
 R. Mikulikova, S. Moritz, T. Gumpenberger, M. Olbrich, Ch. Romanin, L. Bacakova, V. Svorcik, J. Heitz, "Cell microarrays on photochemically modified polytetrafluoroethylene", Biomaterials, vol. 26, pp. 5572–5580, 2005.
 E. Rebollar, I. Frischauf, M. Olbrich, T. Peterbauer, S. Hering, J. Preiner, P. Hinterdorfer, Ch. Romanin, J. Heitz, "Proliferation of aligned mammalian cells on laser-nanostructured polystyrene", Biomaterials, vol. 29, pp. 1796-1806, 2008.
 P. Slepicka, N. Slepickova Kasalkova, J. Siegel, Z. Kolska, L. Bacakova, V. Svorcik, "Nano-structured and functionalized surfaces for cytocompatibility improvement and bactericidal action", Biotechnol. Adv., vol. 33, pp. 1120–1129, 2015.