Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nanoparticles manipulation in 3D nanotips excited with plasmonic vortex   Recent advances in nanotechnologies have prompted the need for tools to
accurately and non invasively manipulate individual nanoobjects. Among the
possible strategies, optical forces have been widely used to enable nano
optical tweezers capable of trapping or moving a specimen with unprecedented
accuracy. Here, we propose an architecture consisting of a nanotip excited with
a plasmonic vortex enabling effective dynamical control of nanoparticles in
three dimensions. The optical field generated by the structure can be used to
manipulate single dielectric nanoparticles acting on the total angular momentum
of light used to illuminate the structure. We demonstrate that it is possible
to stably trap or force the beaming of the particle from specific points, thus
enabling a new platform for nanoparticle manipulation and sorting.

17
The categories of this paper are: q-fin
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat