Browsing School of Physics by Title
Now showing items 1896-1915 of 2107
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Tailoring highly conductive graphene nanoribbons from small polycyclic aromatic hydrocarbons: a computational study
(2013)Pyrene, the smallest two-dimensional mesh of aromatic rings, with various terminal thiol substitutions, has been considered as a potential molecular interconnect. Charge transport through two terminal devices has been ... -
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 ... -
A TEM Heart Transplant: The Development of a User Adjustable Pole-piece (UAP)
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Transmission Electron Microscopes (TEMs) have massively accelerated progress in many areas of science, particularly biology and material science. Atomic-scale resolution was achieved soon after the invention of the TEM, ... -
Temperature dependence of inverted tunneling magnetoresistance in MGO-based magnetic tunnel junctions
(2010)MgO-based magnetic tunnel junctions (MTJs) of the following main structure: Ir22Mn78 (10 nm) /Co90Fe10 (2 nm) /Ru (0.85 nm) /CoFeB (0.5t<2 nm) /MgO (2.5 nm) /CoFeB (3 nm) have been fabricated, with a thin CoFeB layer in ... -
Temperature dependent coercivity crossover in pseudo-spin-valve magnetic tunnel junctions with perpendicular anisotropy
(2011)We report the temperature dependent collapse of tunnel magnetoresistance (TMR) in perpendicular anisotropy magnetic tunnel junctions (pMTJs) with AlO(x) barriers and (Co/Pt)(3) multilayer electrodes, due to the coercivity ... -
Temperature dependent photoluminescence of nanocrystalline γ-CuCl hybrid films
(2014)Organic–inorganic hybrid films combine the basic properties of organic and inorganic materials and offer special advantages that enhance optical, thermal and mechanical properties. We have studied the temperature dependent ... -
Temperature tuning of two-photon absorption microcavity photodetectors for wavelength selective pulse monitoring
(2008)Temperature tuning of a GaAs two-photon absorption microcavity photodetector with a tuning rate of 0.125 nm per degree is demonstrated. The detector response is shown to be independent of temperature change in the range ... -
Temperature-dependent magnetic second-harmonic generation from Fe nanostructures grown on vicinal W(110)
(2011)Temperature-dependent magnetic second-harmonic generation (MSHG) at normal incidence (NI) is used to determine magnetization curves from Au-capped ultrathin Fe nanostructures grown on a vicinal W(110) substrate. Aligned ... -
Temporal water mobility and sodium intensity measurements in penumbra and core tissue during acute stroke
(2011)The perfusion-diffusion mismatch is a commonly used approach to distinguish between still-viable penumbra and irreversibly damaged core tissue in human stroke patients. However, in recent years it has become clear that the ... -
Tensor-network method to simulate strongly interacting quantum thermal machines
(2020)We present a methodology to simulate the quantum thermodynamics of thermal machines which are built from an interacting working medium in contact with fermionic reservoirs at a fixed temperature and chemical potential. Our ... -
TEXES observations of M supergiants: dynamics and thermodynamics of wind acceleration
(American Astronomical Society, 2009)We have detected [Fe II] 17.94 ?m and 24.52 ?m emission from a sample of M supergiants (? Cep, ? Sco, ? Ori, CE Tau, AD Per, and ? Her) using the Texas Echelon Cross Echelle Spectrograph on NASA's Infrared Telescope Facility. ... -
The complex dynamics of flowing foam
(Trinity College (Dublin, Ireland). School of Physics, 2014)We investigate the link between the non-linear macroscopic rheology of wet foams and the microscopic interactions at the bubble-scale, within the general framework of foams as a complex system. This rheology has been found ... -
The evolution and space weather effects of solar coronal holes
(Trinity College (Dublin, Ireland). School of Physics, 2011)In recent years the role of space weather forecasting has grown tremendously as our society increasingly relies on satellite dependent technologies. As solar activity is the foremost important aspect of space weather, the ... -
The growth, formation and magnetic behaviour of noble metal capped atomic wires
(Trinity College (Dublin, Ireland). School of Physics, 2016)Transition metal nanostructures have been observed to have several interesting magnetic properties. Nanowire of atomic widths on a vicinal surfaces show these interesting properties clearly, which also vary with the width ... -
The impact of protostellar jets on their environment
(Trinity College (Dublin, Ireland). School of Physics, 2005)The nature of the accelerated and heated gas along collimated outflows emanating from deeply embedded protostars is investigated. By analysing the shock structures and excitation conditions it is possible to deduce information ... -
The influence of the laser induced plasma in the pulsed laser depositon of ZnO
(Trinity College (Dublin, Ireland). School of Physics, 2005)The thesis is divided in three main sections, two of them Chapter 2 and 3 are devoted to the study and analysis of the laser produced plasma. Finally in the third section (Chapter 4) the conclusions obtained in the first ... -
The kinematics and morphology of solar coronal mass ejections
(Trinity College (Dublin, Ireland). School of Physics, 2010)Solar coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic field from the Sun into the corona and interplanetary space. They are the most significant drivers of adverse space weather at Earth and ... -
The physical properties of agent-based systems
(Trinity College (Dublin, Ireland). School of Physics, 2004)This thesis deals with the physical properties of agent-based systems. Agent models are powerful tools for understanding 'social' self¬organized systems and may provide an explanation of features typically found in many ...