Texturing of titanium (Ti6Al4V) medical implant surfaces with MHz-repetition-rate femtosecond and picosecond Yb-doped fiber lasers

Date
2011
Authors
Erdoǧan, M.
Öktem, B.
Kalaycioǧlu H.
Yavaş, S.
Mukhopadhyay P.K.
Eken, K.
Özgören, K.
Aykaç, Y.
Tazebay, U.H.
Ilday F.O.
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Optics Express
Print ISSN
10944087
Electronic ISSN
Publisher
Optical Society of American (OSA)
Volume
19
Issue
11
Pages
10986 - 10996
Language
English
Type
Article
Journal Title
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Volume Title
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Abstract

We propose and demonstrate the use of short pulsed fiber lasers in surface texturing using MHz-repetition-rate, microjoule- and sub-microjoule-energy pulses. Texturing of titanium-based (Ti6Al4V) dental implant surfaces is achieved using femtosecond, picosecond and (for comparison) nanosecond pulses with the aim of controlling attachment of human cells onto the surface. Femtosecond and picosecond pulses yield similar results in the creation of micron-scale textures with greatly reduced or no thermal heat effects, whereas nanosecond pulses result in strong thermal effects. Various surface textures are created with excellent uniformity and repeatability on a desired portion of the surface. The effects of the surface texturing on the attachment and proliferation of cells are characterized under cell culture conditions. Our data indicate that picosecond-pulsed laser modification can be utilized effectively in low-cost laser surface engineering of medical implants, where different areas on the surface can be made cell-attachment friendly or hostile through the use of different patterns. © 2011 Optical Society of America.

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Keywords
Animal cell culture, Dental prostheses, Fiber lasers, Pulse repetition rate, Textures, Thermal effects, Titanium, Ytterbium, Cell attachments, Culture conditions, Dental implants, Femtoseconds, Human cells, Laser modifications, Low-cost lasers, Medical implants, Microjoule, Micron scale, Nanosecond pulse, Pico-second pulse, Picoseconds, Short-pulsed, Surface textures, Surface-texturing, Thermal heat, Ti-6al-4v, Titanium-based, Yb-doped fiber lasers, Pulsed lasers, biomaterial, titanium, titanium alloy (TiAl6V4), ytterbium, acoustics, article, cell adhesion, cell differentiation, cell proliferation, chemistry, equipment design, human, laser, materials testing, methodology, optics, scanning electron microscopy, surface property, tumor cell line, Acoustics, Biocompatible Materials, Cell Adhesion, Cell Differentiation, Cell Line, Tumor, Cell Proliferation, Equipment Design, Humans, Lasers, Materials Testing, Microscopy, Electron, Scanning, Optics and Photonics, Surface Properties, Titanium, Ytterbium
Citation
Published Version (Please cite this version)