Modeling electrodynamics in the vicinity of metal nanostructures

by Daja Talina Helga Wilhelmine Ruhlandt
Doctoral thesis
Date of Examination:2018-12-18
Date of issue:2019-03-08
Advisor:Prof. Dr. Jörg Enderlein
Referee:Prof. Dr. Jörg Enderlein
Referee:Prof. Dr. Claus Ropers
Referee:Prof. Dr. Tim Salditt
Referee:Prof. Dr. Andreas Janshoff
Referee:Dr. Alexander Egner
Referee:Dr. Florian Rehfeldt
Persistent Address: http://dx.doi.org/10.53846/goediss-7334

 

 

Files in this item

Name:DissertationDajaRuhlandt.pdf
Size:48.5Mb
Format:PDF

The following license files are associated with this item:

Abstract

English

In this work, we show how a profound theoretical understanding of a seemingly exotic phenomenon, namely the influence of metal structures on fluorescence lifetimes, has lead to the development of a microscopy technique with outstanding z-resolution that is based on a completely different physical concept than other optical super-resolution methods. The first part of this work is dedicated to classical electrodynamics. In particular, the radiation properties of oscillating electric dipoles are derived in both planar and spherical geometries. An interpretation of these results in quantum-mechanical terms is then used to quantitatively describe the change of fluorescence lifetimes in the vicinity of metal nanostructures. The power of this semi-classical approach is demonstrated in the second part of this work, where metal-induced energy transfer (MIET) microscopy is employed to study several biological systems, and the fluorescence quantum yield of dyes in different environments is determined via lifetime measurements in a nanocavity.
Keywords: electrodynamics; metal-induced energy transfer; fluorescence lifetime imaging microscopy; fluorescence quantum yield
 
Statistik