Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient simulation for light scattering from plasmonic core-shell
  nanospheres on a substrate for biosensing   We have developed an efficient numerical method to investigate light
scattering from plasmonic nanospheres on a substrate covered by a shell, based
on the half-space Greens function approach. We use this method to study optical
scattering from DNA molecules attached to metallic nanoparticles on a substrate
and compare with experiment. We obtain fairly good agreement between
theoretical predictions and the measured ellipsometric spectra. The metallic
nanoparticles were used to detect the binding with DNA molecules in a
microfluidic setup via spectroscopic ellipsometry (SE), and a detectable change
in ellipsometric spectra was found when DNA molecules are captured on Au
nanoparticles surface. Our theoretical simulation indicates that the coverage
of Au nanosphere by a submonolayer of DNA molecules, which is modeled by a thin
layer of dielectric material, can indeed lead to a small but detectable change
in ellipsometric spectra. Our studies demonstrated the ultra-sensitive
capability of SE for sensing submonolayer coverage of DNA molecules on Au
nanospheres.

17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga