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Patterning of rutile TiO2 surface by ion beam lithography through full-solid masks
R Sanz1, M Jaafar, M Hernández-Vélez
1Instituto de Ciencia de Materiales de Madrid (CSIC), Madrid, Spain. rsanz@nanoate.com
Nanotechnology
|May 14, 2010
Summary
Energetic heavy ion irradiation of rutile titanium dioxide (TiO2) surfaces through a porous alumina mask created nanopatterns. Etching resulted in corrugated surfaces with nanobars, demonstrating potential for novel material applications.
Area of Science:
- Materials Science
- Surface Science
- Nanotechnology
Background:
- Rutile titanium dioxide (TiO2) is a crucial material in various applications.
- Controlling surface morphology at the nanoscale is essential for advanced material properties.
Purpose of the Study:
- To investigate the nanopatterning of rutile TiO2 single crystal surfaces.
- To analyze the resulting nanostructure morphology and stability.
Main Methods:
- Irradiation of rutile TiO2 with energetic heavy ions.
- Utilizing a stencil mask of nickel-filled self-ordered porous anodic alumina.
- Etching the irradiated surface with hydrofluoric acid (HF).
Main Results:
- Achieved nanopatterning of rutile TiO2 surfaces.
- Obtained a corrugated morphology with parallel furrows and ridges (nanobars) of 50 nm diameter and 100 nm pitch.
- Observed collapsed TiO2 nanorods on the patterned surface.
Conclusions:
- Successful nanopatterning of rutile TiO2 surfaces was demonstrated.
- The stability of the nanopatterned surface under high temperatures and its crystalline properties were analyzed.
- The method provides a route to create well-defined TiO2 nanostructures.
