Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffusion modeling for Dip-pen Nanolithography   The diffusion model for the dip pen nanolithography is similar to spreading
an ink drop on a paper. Nanolithography uses Atomic Probe Microscope like
probes to deliver the ink drop on to the substrate. The model considers the ink
to be molecular. Some models have been developed considering fluid ink, some
with thiol inks, particulate inks and polymer inks. The models consider the
fluid ink with the added factors such as flow rate, detachment rate, effect due
to relative humidity, multilayer flow, the ink drop, with meniscus etc., which
makes the model complicated. The aim of this paper is to create a generalized
diffusion model

26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg