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Novel Instrumentation for High Frequency Electrical Conductivity and Magnetisation Dynamics Characterisation
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)
The drive toward smaller devices and faster operational speeds places a challenge on techniques for probing electrical conductivity and magnetisation dynamics. This thesis attempts to address this challenge by developing ...
Single-pulse all-optical partial switching in amorphous DyxCo1-xand TbxCo1-xwith random anisotropy
(2022)
Repeated uniform switching of the magnetization of thin films of ferrimagnetic amorphous Gdx (FeCo)1 x in response to single fast laser
pulses is well established. Here, we report unusual toggle switching in thin films ...
Carrier density dependence of plasmonenhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure
(2015)
An array of Ag nanoboxes fabricated by helium-ion lithography is used to demonstrate plasmon-enhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure. The nonradiative energy transfer, from an ...
Chladni Figures Revisited based on Nanomechanics
(2007)
Chladni patterns based on nanomechanics in the microfluidic environment are presented. In contrast with the macroscopic observations in the gaseous environment, nanoparticles are found to move to the nodes, whereas ...
Printable G-putty for Frequency and Rate Independent, High Performance Strain Sensors
(2021)
While nanocomposite electromechanical sensors are expected to display reasonable conductivity and high sensitivity, little consideration is given to eliminating hysteresis and strain rate/frequency dependence from their ...
Synthesis and strong optical limiting response of graphite oxide covalently functionalized with gallium phthalocyanine
(Institute of Physics, 2011)
A soluble graphite oxide (GO) axially substituted gallium phthalocyanine (PcGa) hybrid material (GO?PcGa) was for the first time synthesized by the reaction of tBu4PcGaCl with GO in anhydrous DMSO at 110 ?C in the presence ...
Investigation of organic / ferromagnet interface and magnetoresistive characteristics of small molecule organic semiconductors
(Trinity College (Dublin, Ireland). School of Physics, 2013)
Spin injection, transport and dynamics in organic semiconductors are of growing interest as the field of organic spin electronics begins to take shape during the last decade. This new field of research aims to manipulate ...
Potential impact of the EVLA on studies potential impact of the EVLA on studies of thermal radio emission from cool evolved K and M star winds
(ASP, 2008)
Cm-radio observations of evolved K and M stars made at the
VLA and ATCA, and subsequent detailed atmospheric modeling, have revealed
that the thermal emission originates from the wind acceleration region close to
the ...
Microtexture of magnetite thin films of (001) and (111) orientations on MgO substrates studied by electron-backscatter diffraction
(American Institute of Physics, 2008)
The grain orientation of (001)- and (111)-oriented magnetite thin films grown on MgO substrates (film thickness of 100?400?nm) is analyzed by means of the electron-backscatter diffraction (EBSD) technique. The (001) surface ...
Fe- and Co-based magnetic tunnel junctions with AlN and ZnO spacers
(2022)
AlN and ZnO, two wide band-gap semiconductors extensively used in the display industry, crystallize in the wurtzite structure, which can favor the formation of epitaxial interfaces to close-packed common ferromagnets. Here ...