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Now showing items 481-490 of 2111
Robust Optical Inversion of the Excitonic Population of InGaAs Quantum Dots via Adiabatic Rapid Passage
(Optical Society of America, 2011)
We show population inversion in a semiconductor quantum dot with a chirped optical pulse via adiabatic rapid passage. This method is insensitive to variations in the dipole coupling and provides a new tool for preparing ...
Effect of self-defocusing in thin films of close-packed CdS nanocrystals
(World Scientific, 1999)
Analysis of liquid metal foams through X-ray radioscopy and microgravity experiments
(2014)
Complex liquid structures such as metallic foams were produced in a furnace that allowed in situ X-ray monitoring of the evolution of the structure and distribution of the liquid in the foam. The experiments were carried ...
Spin injection, detection and magnetoresistive effects in organic systems
(Trinity College (Dublin, Ireland). School of Physics, 2015)
Because of the weak spin-orbit interaction in organic systems, very long spin lifetimes are intuitively expected. The prospect of cheap and flexible spintronics devices makes organic semiconductors an attractive class of ...
Mechanochromic and Thermochromic Sensors Based on Graphene Infused Polymer Opals
(2020)
High quality opal-like photonic crystals containing graphene are fabricated using
evaporation-driven self-assembly of soft polymer colloids. A miniscule amount
of pristine graphene within a colloidal crystal lattice ...
Optical impedance matching studied with Scanning Near-Field Optical Microscopy
(Trinity College (Dublin, Ireland). School of Physics, 2003)
This thesis is a study of reflection-mode Scanning Near-Field Optical Microscopy (SNOM). A microscope was built for non-invasive imaging of samples, with optical resolutions better than the diffraction limit. The microscope ...
Spectroscopic studies of self-assembled plasmonic nanoparticle arrays
(Trinity College (Dublin, Ireland). School of Physics, 2011)
In this thesis an alternative self-assembled deposition technique able to
produce nanoparticle (NP) arrays ordered on the macroscale is described.
Stepped surfaces are produced by high temperatures annealing AI3O4 (0001)
and ...
The use of wide-bandgap CuCl on silicon for ultra-violet photonics
(2005)
γ-CuCl is a wide-bandgap (Eg = 3.395eV), direct bandgap, semiconductor material with a cubic zincblende lattice structure. Its lattice constant, aCuCl = 0.541 nm, means that the lattice mismatch to Si (aSi = 0.543 nm) is ...
Growth Models of Pure Supercooled Materials
(2008)
For a pure material, the dynamics of the growth of one phase in a supercooled other phase for the case of a
shallow temperature quench is traditionally understood via a kinetic thermal diffusion equation model or ...