Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Photoabsorption from Cobalt Implanted Rutile TiO2 (110)
  Surfaces   Present study investigates the photoabsorption properties of single crystal
rutile TiO2 (110) surfaces after they have been implanted with low fluence of
Cobalt ions. The surfaces, after implantation, demonstrate fabrication of
nanostructures and anisotropic nano-ripple patterns. Creation of oxygen
vacancies (Ti3+ states) as well as band gap modification for these samples is
also observed. Results presented here demonstrate that fabrication of self
organized nanostructures and development of oxygen vacancies, upon cobalt
implantation, promote the enhancement of photoabsorbance in both UV (2 times)
and visible (5 times) regimes. These investigations on nanostructured TiO2
surfaces can be important for photo- catalysis.

34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys