Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical forces, torques and force densities calculated at a microscopic
  level using a self-consistent hydrodynamics method   The calculation of optical force density distribution within a material is
challenging at the nanoscale, where quantum and non-local effects emerge and
macroscopic parameters such as permittivity become ill-defined. We demonstrate
that the microscopic optical force density of nanoplasmonic systems can be
defined and calculated using a self-consistent hydrodynamics model that
includes quantum, non-local and retardation effects. We demonstrate this
technique by calculating the microscopic optical force density distributions
and the optical binding force induced by external light on nanoplasmonic
dimers. We discover that an uneven distribution of optical force density can
lead to a spinning torque acting on individual particles.

30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th