Biomedical Engineering Reference
In-Depth Information
Chapter 1
Chiral Nanostructures with Plasmon and
Exciton Resonances
Zhiyuan Fan,
a
Hui Zhang,
a
Robert Schreiber,
b
Tim Liedl,
b
Gil Markovich,
c
Val erie A. Gerard,
d
Yurii K. Gun'ko,
d,e
and Alexander O. Govorov
a
a
Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
b
Fakult at f ur Physik and Center for Nanoscience, Ludwig-Maximilians-Universit at,
Geschwister-Scholl-Platz 1, 80539 Munich, Germany
c
School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences,
Tel Aviv University, Tel Aviv 69978, Israel
d
School of Chemistry and CRANN, University of Dublin, Trinity College, Dublin 2,
Ireland
e
St. Petersburg National Research University of Information Technologies,
Mechanics and Optics, St. Petersburg 197101, Russia
govorov@ohiou.edu
This chapter is focused on chiral nanostructures with plasmon and
exciton resonances. Electromagnetic interactions between chiral
and achiral building blocks in nanomaterials are modeled using
classical or semiclassical theories. The theory predicts several
mechanisms to transfer and induce circular dichroism (CD) in
the visible wavelength region using nanostructures. In particular,
enhanced molecular CD can be achieved in metal nanostructures
using Coulomb interaction and plasmon enhancement. Additional
amplification of molecular CD appears in plasmonic nanostructures
withhotspotsandanisotropicgeometries.Thechapteralsoreviews
