Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystallographic investigation of Au nanoparticles embedded in a
  SrTiO$_3$ thin film for plasmonics applications by means of synchrotron
  radiation   Self-organized monocrystalline Au nanoparticles with potential applications
in plasmonics are grown in a SrTiO$_3$ matrix by a novel two-step deposition
process. The crystalline preferred orientation of these Au nanoparticles is
investigated by synchrotron hard x-ray diffraction. Nanoparticles
preferentially align with the (111) direction along the substrate normal (001),
whereas two in-plane orientations are found with $[110]_{SrTiO_3} \: || \:
[110]_{Au}$ and $[100]_{SrTiO_3} \: || \: [110]_{Au}$. Additionally, a smaller
diffraction signal from nanoparticles with the (001) direction parallel to the
substrate normal (001) is observed; once again, two in-plane orientations are
found, with $[100]_{SrTiO_3} \: || \: [100]_{Au}$ and $[100]_{SrTiO_3} \: || \:
[110]_{Au}$. The populations of the two in-plane orientations are found to
depend on the thickness of the gold film deposited in the first step of the
growth.

36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat