Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the formation process of silicon carbide nanophases via hydrogenated
  thermally induced templated synthesis   A thermally induced templated synthesis for SiC nanotubes and nanofibers
using ammonia or nitrogen as a carrier gas, single wall carbon nanotubes
(SWCNT) as templates as well as gaseous Si is presented. The bundles of SWCNT
act as both the carbon source and as a nanoframe from which SiC structuctures
form. Depending on the duration of the thermally induced templated reaction,
for a fixed temperature, carrier gas, and gas pressure, various SiC
nanostructures are obtained. These structures include SiC nanorods coated in C,
SiC nanorods, SiC nanotubes, and SiC nanocrytals. From our analysis using
transmission electron microscopy (TEM) and scanning electron microscopy (SEM),
electron energy-loss spectroscopy (EELS), electron diffraction (EDX), optical
absorption spectroscopy and Raman spectroscopy as probes we prove that H has a
key role on the morphology and stochiometry of the different SiC
nanostructures.

16
The categories of this paper are: stat
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio