Abstract:
In plasmonics and nanophotonics, there are many techniques to study particle dynamics in
a heterogeneous sample on a multi-length scale. In this thesis, we work towards making an
optothermoelectric trap, and with self-preprepared plasmonic gold and silver nanoparticles
and nanorods, attempt to study system dynamics using a revolutionary upcoming technique
named Differential Dynamic Microscopy, which not only helps us to investigate the dynamics
in spatial dimension but in time as well. We then study their related graphs and Fourier
transform images and try to classify and quantify the various diffusive processes occurring
in the system and get a picture of the dominating forces under various circumstances and
their effects.