Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Realization of superchiral surface lattice resonances in
  three-dimensional bipartite nanoparticle arrays   Optical chirality (OC) is a fundamental property of electromagnetic waves
that plays a key role in governing chiral light-matter interaction. Here, we
demonstrate how to obtain superchiral surface lattice resonances (SLRs), which
arise from the hybridization between localized surface plasmons (LSPs) and
diffractive Rayleigh anomalies (RAs), in nanoparticle arrays. We first study
the coupling constants between LSPs and RAs in 2D Au monopartite nanorod arrays
by angle-resolved reflectivity spectroscopy and finite-difference time-domain
(FDTD) simulations. The complex dispersion relations and the near-fields of
SLRs are then analyzed by temporal coupled-mode theory (CMT) for formulating
the dependence of the coupling constants on the dipole orientation of the
nanorod. The TE and TM coupling constants are found to depend strongly on the
orientation of the dipole lying in the plane perpendicular to the propagation
direction of RA. By using two orthogonally oriented nanorods, TE- and TM-SLRs
can be excited independently. We then extend the CMT approach to rationally
design superchiral SLRs based on 3D bipartite nanorods. The OC is shown to
depend on the relative displacement between two nanorods, the near-field
strength, and the interplay between the coupling constants and the Q-factor of
the SLR resonance. We have achieved an averaged OC of 27 times stronger than
that of the circularly polarized plane wave over the entire surface, featuring
large area chiral surface waves that are useful for chirality-based
applications.

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The categories of this paper are: alg-geom
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: q-fin
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat