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Now showing items 1461-1470 of 2111
Computational studies of correlated 1D and 3D systems : a density functional theory approach
(Trinity College (Dublin, Ireland). School of Physics, 2011)
This thesis describes a number of theoretical investigations into the electric and magnetic
properties of one-dimensional and three-dimensional correlated systems. Our
studies are based on suitable and efficient implementations ...
Andreev reflection in two-dimensional topological insulators with either conserved or broken time-reversal symmetry
(2012)
We investigate Andreev reflection in two-dimensional heterojunctions formed by a superconductor in contact
with a topological insulator ribbon either possessing or breaking time-reversal symmetry. Both classes of
topological ...
Low-Cost, High-Performance Spray Pyrolysis-Grown Amorphous Zinc Tin Oxide: The Challenge of a Complex Growth Process
(2020)
Transparent conductive oxides (TCOs) are important materials for a wide range of optoelectronic devices. Amorphous zinc tin oxide (a-ZTO) is a TCO and one of the best nontoxic, low-cost replacements for more expensive ...
Single mode lasers based on slots suitable for photonic integration
(2011)
The re-growth free single mode lasers based on etched slots suitable for photonic integration are presented in this paper. The fabricated 650?m long laser exhibits a threshold current and a slope efficiency of about 32mA ...
Transparent Conductors Printed from Grids of Highly Conductive Silver Nanosheets
(2023)
Transparent conductors (TCs) represent key components in many applications from optoelectronic devices to electromagnetic shielding. While commercial applications typically use thin films of indium tin oxide, this material ...
Mode manipulation in small microsphere systems
(2008)
In this work we demonstrate the possibility of mode manipulation in systems of symmetric photonic molecules
formed by placing several microspheres in contact. We observe photonic nanojets that reflect the symmetry of
the ...
Material selection for Spin-Transfer-Torque Magnetic Random Access Memories: a High-Throughput approach
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)
A Spin-Transfer-Torque Magnetic Random Access Memory (STT-MRAM) is a complex multilayered structure, whose sensitive element is formed by two ferromagnetic layers sandwiching an insulator, acting as a tunnel barrier. The ...
Dye laser micro-fluidic amplifiers
(Trinity College (Dublin, Ireland). School of Physics, 2011)
Dye lasers, based on micro-fluidic systems, have been the focus of increasing attention in recent years. Whereas micro-fluidics networks, such as a 'lab-on-a-chip', involve
expensive and complicated fabrication processes, ...
Multifunctional Thin Films of Vanadium Oxides for Enhanced Energy Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)
This thesis deals with the growth, characterisation, and application of VO2
and V2O3 thin films. Various methods were employed to prepare and analyze
the VO2 and V2O3 films, aiming to explore the suitability of their ...
Comment on Theoretical Description of Carrier Mediated Magnetism in Cobalt Doped ZnO
(2009)
Comment on ``Theoretical Description of Carrier
Mediated Magnetism in Cobalt Doped ZnO??
In this Comment, we question the electron-mediated
mechanism for magnetic coupling in Co-doped ZnO re-
cently proposed by Walsh, ...