Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical properties of coupled silicon nanowires and unusual mechanical
  inductions   A recent study of the photonic coupling between metallic nanowires has
revealed new degrees of freedom in the system. Unexpected spin torques were
induced on dimers when illuminated with linearly polarized plane-waves. As
near-field observables, the spectra of torques showed more resolved resonances
than typical far-field spectra. Here the study is extended to silicon dimers.
Strong forces and torques are exerted by light under both polarizations s and
p, contrary to plasmonic systems where the resonant strong forces are found
only for p-polarization. The systems made of high-dielectric possess volume
resonances that induce the forces differently than in plasmonic systems, which
have surface resonances. The asymmetry in strong near-fields is responsible for
the unusual mechanics of the system. Some consequences of that may include the
breaking of the action-reaction principle or the appearance of pulling forces.
  The numerical study is based on an exact method. The work is thought for the
design of nanorotators and nanodetectors. It suggests a new viewpoint about
optical forces: the resultant dynamics of topological variations of
electromagnetic fields.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph