Femtosecond laser induced periodic nanostructures on titanium dioxide film for improving biocompatibility

T. Shinonaga, N. Horiguchi, M. Tsukamoto, A. Nagai, K. Yamashita, T. Hanawa, N. Matsushita, X. Guoqiang, N. Abe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Periodic nanostructures formation on Titanium dioxide (TiO2) film by scanning of femtosecond laser beam spot at fundamental and second harmonic wave is reported. Titanium (Ti) is one of the most widely used for biomaterials, because of its excellent anti-corrosion and high mechanical properties. However, Ti implant is typically artificial materials and has no biofunction. Hence, it is necessary for improving the bioactivity of Ti. Recently, coating of TiO2 film on Ti plate surface is useful methods to improve biocompatibility of Ti plate. Then, if periodic nanostructures were formed on the film surface, cell spreading might be controlled at one direction. We propose periodic nanostructures formation on TiO2 film by femtosecond laser irradiation. Cell spread could be controlled along the grooves of periodic nanostructures. In the experiments, the film was formed on Ti plate with an aerosol beam. A commercial femtosecond Ti : sapphire laser system was employed in our experiments. Periodic nanostructures, lying perpendicular to the laser electric field polarization vector, were formed on the film at fundamental and second harmonic wave. Periodic nanostructures were also produced on Ti plate with femtosecond laser. The period of periodic nanostructures on the film was much shorter than that on Ti plate. By cell test, there was a region of cell spreading along the grooves of periodic nanostructures on the film formed with femtosecond laser at fundamental wave. On bare film surface, cell spreading was observed at all direction. These results suggest that direction of cell spread could be controlled by periodic nanostructures formation on the film.

Original languageEnglish
Title of host publicationSynthesis and Photonics of Nanoscale Materials X
DOIs
Publication statusPublished - May 30 2013
Externally publishedYes
EventSynthesis and Photonics of Nanoscale Materials X - San Francisco, CA, United States
Duration: Feb 3 2013Feb 5 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8609
ISSN (Print)0277-786X

Other

OtherSynthesis and Photonics of Nanoscale Materials X
CountryUnited States
CitySan Francisco, CA
Period2/3/132/5/13

Keywords

  • aerosol beam
  • biocompatibility
  • femtosecond laser
  • periodic nanostructures
  • titanium dioxide film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Femtosecond laser induced periodic nanostructures on titanium dioxide film for improving biocompatibility'. Together they form a unique fingerprint.

Cite this