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Now showing items 131-140 of 2110
Diameter-modulated ferromagnetic CoFe nanowires
(2013)
Highly ordered nanoporous anodic aluminium oxide templates with uniform or periodically modulated pore diameters have been fabricated by the hard-pulse anodization technique. Straight and diameter-modulated CoFe nanowires ...
Synthesis, characterization and magnetic properties of ultrafine Co<inf>3</inf>O<inf>4</inf> octahedra
(2015)
Octahedral Co3O4 nanoparticles were synthesised in an aqueous ammonia solution using hexagonal β-Co(OH)2 nanoplates as starting materials. Electron microscopy analysis indicates that the Co3O4 particles have diameters of ...
Electronic transport through EuO spin-filter tunnel junctions
(2012)
Epitaxial spin-filter tunnel junctions based on the ferromagnetic semiconductor europium monoxide (EuO) are investigated by means of density functional theory. In particular, we focus on the spin transport properties of ...
Far-ultraviolet spectra of broad absorption line QSOs and constraints on models for the ionization structure and metallicity of the BAL-region gas
(American Astronomical Society, 1996)
Hubble Space Telescope Faint Object Spectrograph G270H spectra of four moderate-to high-redshift broad absorption line (BAL) QSOs are presented. In addition, evidence is discussed that indicates that the gas that gives ...
Impurity band magnetism in organic semiconductors
(2019)
Recent experiments and theoretical studies have proposed that spin-transport in organic semiconductors, in
particular in Alq3, may occur in an impurity band. Here we model the electronic and magnetic properties of
such ...
Influence of quantum dot concentration on F?rster resonant energy transfer in monodispersed nanocrystal quantum dot monolayers
(2010)
The quantum dot (QD) concentration dependence of the optical properties of QD monolayers is shown to be dominated by Forster resonant energy transfer (FRET) from smaller to larger QDs in the ensemble. With increasing QD ...
Ultralow-frequency photocurrent oscillation in ZnO nanowires
(2010)
We report experimental results of ultralow frequency photocurrent oscillation in individual ZnO
nanowires. Consecutive photocurrent and photoluminescence measurements corroborate the process
of capture and release of ...
NANOTECHNOLOGICAL CANTILEVER-BASED ANALYSIS OF INFECTIOUS DISEASE BIOMARKERS
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)
Our history is pin-pointed with several events when a viral, parasite or bacterial pathogen disrupted its boundaries and influenced human culture and behaviour, shaping human past and present times. The continuous appearance ...
Tuneable plasmonic metasurfacesfor on-chip beam steering applications using vanadium dioxide
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)
For centuries, optical components were created using bulk components of various refractive indexes where light accumulates phase over a path much longer than its wavelength. With the advent of nanofabrication techniques, ...