Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laser driven self-assembly of shape-controlled potassium nanoparticles
  in porous glass   We observe growth of shape-controlled potassium nanoparticles inside a random
network of glass nanopores, exposed to low-power laser radiation. Visible laser
light plays a dual role: it increases the desorption probability of potassium
atoms from the inner glass walls and induces the self-assembly of metastable
metallic nanoparticles along the nanopores. By probing the sample transparency
and the atomic light-induced desorption flux into the vapour phase, the
dynamics of both cluster formation/evaporation and atomic photo-desorption
processes are characterized. Results indicate that laser light not only
increases the number of nanoparticles embedded in the glass matrix but also
influences their structural properties. By properly choosing the laser
frequency and the illumination time, we demonstrate that it is possible to
tailor the nanoparticles'shape distribution. Furthermore, a deep connection
between the macroscopic behaviour of atomic desorption and light-assisted
cluster formation is observed. Our results suggest new perspectives for the
study of atom/surface interaction as well as an effective tool for the
light-controlled reversible growth of nanostructures.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio