Graduate theses
Current Record: 27 of 196
|
Title |
PT plasmons in rectangular and twist geometries |
Author
|
Συγριμής, Ανδριανός-Ηλίας
|
Thesis advisor
|
Τσιρώνης, Γεώργιος
|
Abstract |
The purpose of this thesis is to examine parity-time surface plasmon polaritons(SPP) known as
PT plasmons, in short, in rectangular geometries. We start by defining what is a PT symmetry.
Then we continue by analyzing the theoretical background of the electromagnetic(EM) waves and
the dielectric function in both classical,using the Drude model, and quantum approach, using the
random phase approximation(RPA). Furthermore, we examine the dispersion of volume(bulk) plasmons
and we move directly to the surface plasmons at single- and multi- layer interfaces, where we
find a gain that counterbalance the losses of the physical system and has similar properties as of
the PT symmetry. Finally we perform some simulations using the COMSOL Multiphysics software
for those interfaces and for graphene and we present our conclusions.
|
Language |
English |
Issue date |
2023-11-22 |
Collection
|
School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses
|
|
Type of Work--Graduate theses
|
Permanent Link |
https://elocus.lib.uoc.gr//dlib/1/0/b/metadata-dlib-1696575517-526365-13931.tkl
|
Views |
345 |