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Now showing items 681-690 of 2111
Influence of strain and oxygen vacancies on the magnetoelectric properties of multiferroic bismuth ferrite
(American Physical Society, 2005)
The dependencies on strain and oxygen vacancies of the ferroelectric polarization and the weak ferromagnetic
magnetization in the multiferroic material bismuth ferrite, BiFeO3, are investigated using first principles
density ...
Photolithography allows high-Q AlN microresonators for near octave-spanning frequency comb and harmonic generation
(2020)
Single-crystal aluminum nitride (AlN) possessing both strong Pockels and Kerr nonlinear optical effects as well as a very large band gap is a fascinating optical platform for integrated nonlinear optics. In this work, fully ...
Exploring New and Enhanced Optical Functionalities in Coupled Nano-Systems
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)
In this thesis, a variety of novel emerging systems were chosen to explore new and enhanced optical functionalities in coupled nano-systems. The coupling of novel nanomaterials with complimentary properties paves the way ...
Evidence for internal tether-cutting in a flare/coronal mass ejection observed by Messenger, Rhessi, and Stereo
(2010)
The relationship between eruptive flares and coronal mass ejections (CMEs) is a topic of ongoing debate, especially regarding the possibility of a common initiation mechanism. We studied the kinematic and hydrodynamic ...
Dynamics of classical wave scattering by small obstacles
(American Physical Society, 2001)
A causality problem in the time-dependent scattering of classical waves from point scatterers is pointed
out and analyzed. Based on an alternative model, the leading pole approximation of the exact scattering
matrix of ...
Optimization of the magnetic properties of nanostructured Y-Co-Fe alloys for permanent magnets
(2016)
The structural and magnetic properties of ball-milled Fe-doped YCo
5
−
x
Fe
x
(
0
≤
x
≤
0
.
5
)
were investigated. The magnetization increases with Fe-doping up to the
solid solubility ...
Giant Resistance Change across the Phase Transition in Spin-Crossover Molecules
(2012)
The electronic origin of a large resistance change in nanoscale junctions incorporating spin-crossover
molecules is demonstrated theoretically by using a combination of density functional theory and the
nonequilibrium ...
Quantitative, Label-Free Detection of the Aggregation of alpha-Synuclein Using Microcantilever Arrays Operated in a Liquid Environment
(2012)
Early detection of protein aggregation is of great importance in the field of neurodegenerative diseases. The successful detection of the aggregation of the protein ?-synuclein in a quantitative, label-free manner by ...
Tailoring magnetoresistance at the atomic level: An ab initio study
(2012)
The possibility of manipulating the tunneling magnetoresistance (TMR) of antiferromagnetic nanostructures is predicted in the framework of ab initio calculations. By the example of a junction composed of an antiferromagnetic ...