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Now showing items 1011-1020 of 2111
The connection between stellar activity cycles and magnetic field topology
(2016)
Zeeman Doppler imaging has successfully mapped the large-scale magnetic fields of stars over a large range of spectral types, rotation periods and ages. When observed over multiple epochs, some stars show polarity reversals ...
Quantum transport in 2D materials: Theoretical and computational optimisation of large heterostructures with spintronics properties
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)
Graphene is a monolayer of carbon atoms arranged in a hexagonal lattice, making it the
thinnest and strongest material known to man. Its exceptional electronic and thermal
properties have generated great interest for its ...
Quantum ratchets with few bands below the barrier
(American Physical Society, 2002)
We investigate directed motion in nonadiabatically rocked ratchet systems sustaining few bands below the barrier. Upon restricting the dynamics to the lowest M bands, the total system-plus-bath Hamiltonian is mapped onto ...
Multiphoton processes in a series of designer organic materials
(Trinity College (Dublin, Ireland). School of Physics, 2002)
Multiphoton processes in a series of promising organic materials; an endohedral metallofullerene, La@C82, carbon nanotubes and a set of axially substituted phthalocyanines have been studied.
Observation of magnetic domains using a reflection-mode scanning near-field optical microscope
(American Institute of Physics, 1997)
It is demonstrated that it is possible to image magnetic domains with a resolution of better than 60 nm with the Kerr effect in a reflection-mode scanning near-field optical microscope. Images taken of tracks of ...
Conical diffraction of linearly polarised light controls the angular position of a microscopic object
(2010)
Conical diffraction of linearly polarised light in a biaxial crystal produces a beam with a crescent-shaped intensity profile. Rotation of the plane of polarisation produces the unique effect of spatially moving the ...
Enhancement of quality factor for TE whispering-gallery modes in microcylinder resonators
(2010)
The enhancement of quality factor for TE whispering-gallery
modes is analyzed for three-dimensional microcylinder resonators based on
the destructive interference between vertical leakage modes. In the
microcylinder ...
Optical and X-ray characterization of the magnetic properties of gold capped cobalt nanowires grown on Pt(997)
(Trinity College (Dublin, Ireland). School of Physics, 2011)
Modelling electromechanical properties of 2D materials and heterostructures
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)
Strain, both naturally occurring and deliberately engineered, can have a considerable
effect on the structural, electronic, and transport properties of 2D and layered materials.
Uniaxial or biaxial heterostrain (i.e. ...
Enhanced brightness in organic light-emitting diodes using a carbon nanotube composite as an electron-transport layer
(2001)
We have studied the effects of using a composite fabricated from carbon nanotubes and a host polymer, poly(m-phenylene-vinylene-co-2,5-dioctyloxy-p-phenylene-vinylene) (PmPV), as an electron-transport layer in organic ...