Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Remarkably high value of Capacitance in BiFeO3 Nanorod   A remarkably high value of specific capacitance of 450 F/g has been observed
through electrochemical measurements in the electrode made of multiferroic
Bismuth Ferrite (BFO) in the form of nanorods protruding out. These BFO
nanorods were developed on porous Anodised Alumina (AAO) templates using wet
chemical technique. Diameters of nanorods were in the range of 20-100 nm. The
high capacitance is attributed to the nanostructure. The active surface charge
has been evaluated electrochemically by cyclic voltammetry (CV) at different
scanning rates and charge-discharge studies. The specific capacitances were
constant after several cycles of charge-discharge leading to their useful
application in devices. The mechanism of accumulation of charge on the
electrode surface has been studied.

29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga