Condensed Matter Seminar Series
Electromagnetic Interaction of Nanostructures with Substrates: Applications to Defect Detection and Surface Monitoring
Universidad de Cantabria, Spain
Thursday Nov 18, 11:00 am, Room 298, Physics Building
sensitivity of localized plasmon resonances
in metallic nanostructures to the optical properties of their
environment, has opened the field of plasmonics by offering new
possibilities for surface monitoring, microscopy, SERS, etc. . In
this talk we will review our recent research on the electromagnetic
problem of light scattering by nanostructures either as contaminants
or located on/above substrates. We present a numerical analysis,
based on DDA (Discrete Dipole Approximation) , of the Physics
involved in the interaction between a metallic particle and the
surface underneath. Different scattering geometries will be
considered and the influence of the parameters of the scattering
configuration will be analyzed (optical properties of particle and
substrate, particle size and shape, polarization, angle of incidence,
etc.) [3,4]. Special attention will be paid to our current research
on new materials, like Gallium, for manufacturing new plasmonic tools
Kalkbrenner, U. Hakanson, A. Schaedle, S. Burger, C. Henkel, V.
Sandoghdar, Optical microscopy via spectral modifications of a
nanoantenna, Phys. Rev. Lett.
B.T., The Discrete-Dipole Approximation and its Application to
Interstellar Graphite Grains, Astroph.
P. Albella, F. Moreno, J.M. Saiz, F. Gonzalez, Surface inspection by
spectral monitoring of localizad plasmon resonances, Opt.
 P. Albella, J.
M. Saiz, J. M. Sanz, F. Gonzalez, F. Moreno, Nanoscopic surface
inspection by analyzing the linear polarization degree of the
scattered light, Opt. Lett.
Pae C. Wu, Tong-Ho Kim, April S. Brown, M. Losurdo, G. Bruno, H. O.
Everitt, Real-time Plasmon resonance tuning of liquid Ga
nanoparticles by in situ
spectroscopic ellipsometry, Appl. Phys.
 This research is
funded by USAITC-A (United States Army International Technology
Center-Atlantic) in collaboration with Prof. H. Everitt, Prof. A.
Brown and Dr. Pae C. Wu of Duke University (Durham, NC)
Host: Henry Everitt