Search
Now showing items 1141-1150 of 2111
HELIO The Heliophysics Integrated Observatory
(2011)
Heliophysics is a new research field that explores the Sun-Solar System Connection; it requires the joint exploitation of solar, heliospheric, magnetospheric and ionospheric observations.
HELIO, the Heliophysics Integrated ...
Low Vπ high-speed GaAs travelling-wave electrooptic phase modulators using an n-i-p-n structure
(IEEE, 2009)
In this paper, we report a new design for GaAs modulators based on an n-i-p-n structure. The travelling-wave coplanar waveguide (CPW) electrodes are employed to realize high speed operation. By optimization, an electrical ...
Optical properties and photoluminescence quantum yields of carbon nanotube dispersions
(Trinity College (Dublin, Ireland). School of Physics, 2011)
The absorbance and photoluminescence (PL) spectra of single-walled carbon
nanotubes (SWNTs) dispersed in deuterium oxide (D2O) using various
surfactants were examined in order to estimate the photoluminescence
quantum yield ...
Experimental and computational investigation of structure and magnetism in pyrite Co1-xFexS2: Chemical bonding and half-metallicity
(American Physical Society, 2004)
Bulk samples of the pyrite chalcogenide solid solutions Co1?xFexS2 s0?x?0.5d, have been prepared and
their crystal structures and magnetic properties studied by x-ray diffraction and SQUID magnetization measurements.
Across ...
Dynamic structural colour using vanadium dioxide thin films
(2018)
A thin film stack consisting of layers of indium tin oxide (ITO) with an intermediate vanadium oxide (VO2) layer on an optically thick silver film has been investigated for dynamic structural colour. The structure benefits ...
Magneto-chiral anisotropy in charge transport through single-walled carbon nanotubes
(American Institute of Physics, 2002)
Carbon nanotubes are chiral molecular objects and therefore exist in two forms that are each other?s
mirror image. Many aspects of these fascinating new materials have recently been explored but their
chirality has hardly ...
Design of Slotted Single-Mode Lasers Suitable for Photonic Integration
(2010)
A single-mode laser structure suitable for photonic integration is presented. The laser can be fabricated by standard photolithography without any regrowth steps. Through optimization, a threshold current as low as 13 mA ...
Optimisation of a two colour pumped Tm3+-doped ZBLAN fibre amplifier at 1.49m
(2006)
The authors have constructed a 4 metre length thulium-doped ZBLAN fibre amplifier
optically pumped at 0.8 mm by a tuneable Ti : Sapphire and at 1.06 mm by an Nd3? :YAG laser.
The authors obtained 12.5 dB for small-signal ...