Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deposition of quantum dots in a capillary tube   The ability to assemble nanomaterials, such as quantum dots, enables the
creation of functional devices that present unique optical and electronic
properties. For instance, light-emitting diodes with exceptional color purity
can be printed via the evaporative-driven assembly of quantum dots.
Nevertheless, current studies of the colloidal deposition of quantum dots have
been limited to the surfaces of a planar substrate. Here, we investigate the
evaporation-driven assembly of quantum dots inside a confined cylindrical
geometry. Specifically, we observe distinct deposition patterns, such as
banding structures along the length of a capillary tube. Such coating behavior
can be influenced by the evaporation speed as well as the concentration of
quantum dots. Understanding the factors governing the coating process can
provide a means to control the assembly of quantum dots inside a capillary
tube, ultimately enabling the creation of novel photonic devices.

35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
1
The categories of this paper are: cs