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Now showing items 151-160 of 2110
First principles studies of multiferroic materials
(2009)
Multiferroics, materials where spontaneous long-range magnetic and dipolar orders coexist, represent an attractive class of compounds, which combine rich and fascinating fundamental physics with a technologically appealing ...
Multiple-scattering effects in laser ablation plume expansion in gases
(2006)
Langmuir probe technique has been employed to characterize the dynamics of UV laser ablation plasma ions from a silver target in different background gases (He, Ne, Ar and Xe). For all these gases the ion time-of-flight ...
Transparent conducting films from NbSe(3) nanowires.
(2011)
We have developed methods to disperse and partially size separate NbSe3 nanowires in aqueous
surfactant solutions. These dispersions can easily be formed into thin films. Optical and
electrical studies show these films ...
Rearrangement and elimination of ordered surface layers of crystalline bubble structures due to gas diffusion
(Royal Society of Chemistry, 2009)
We describe a hitherto unknown self-organising effect in wet crystalline bubble structures exposed to
air. Due to the escape of gas from the bubbles in the top surface layer, bubbles shrink and create space
for the bubbles ...
Effective heat dissipation in an adiabatic near-field transducer for HAMR
(2018)
To achieve a feasible heat-assisted magnetic recording (HAMR) system, a near-field transducer (NFT) is necessary to strongly focus the optical field to a lateral region measuring tens of nanometres ...
Relationship between material properties and transparent heater performance for both bulk-like and percolative nanostructured networks
(2014)
Transparent heaters are important for many applications and in the future are likely to be fabricated from thin, conducting, nanostructured networks. However, the electrical properties of such networks are almost always ...
Studies of radon in Ireland : outdoor levels, detector intercomparison and school remediation methods
(Trinity College (Dublin, Ireland). School of Physics, 2016)
Although Ireland has a comprehensive radon strategy in place and an active research community, the rate of testing is still low. The work in this thesis aims to reduce knowledge gaps by making outdoor radon measurements, ...
Controllable growth of metallic nano-helices at room temperature conditions
(2014)
We report on a method to produce multiple-pitch, regularly shaped, aligned, and freestanding metallic nano-helices at room temperature. This method overcomes the limitations of the standard glancing angle deposition approach ...
Atomically resolved spin-dependent tunneling on the oxygen-terminated Fe3O4(111)
(2004)
We employ spin-polarized STM to study the spin-dependent tunneling between a magnetite (111)
sample and an antiferromagnetic tip through a vacuum barrier at room temperature. Atomic scale STM
images show significant ...
In situ characterization of one-dimensional plasmonic Ag nanocluster arrays
(2011)
One-dimensional Ag nanoparticle arrays have been grown on step-bunched vicinal Al2O3 in ultrahigh vacuum using deposition at a glancing angle. The structures grown showed a strong optical anisotropy in the visible region ...