Search
Now showing items 2001-2010 of 2111
Origin of the transition voltage in gold-vacuum-gold atomic junctions
(2013)
The origin and the distance dependence of the transition voltage of gold–vacuum–gold junctions are investigated by employing first-principles quantum transport simulations. Our calculations show that atomic protrusions ...
A study of the film growth environment in pulsed laser deposition of gallium nitride
(Trinity College (Dublin, Ireland). School of Physics, 2004)
This thesis describes a study of the deposition requirements for growth of stoichiometric GaN thin films using pulsed laser deposition. Growth has been carried out using either ceramic GaN or metal (solid and liquid) Ga ...
Photonic molecules: A new concept for wavelength tunable optical delay
(IEEE, 2005)
The paper describes and light propagation modes in coherently coupled spherical microcavities covered with CdTe nanocrystals. We observe a rich new spectrum of resonances due to the lower symmetry of the two coupled ...
Model of impurity segregation in graphene nanoribbons
(2009)
The electronic properties of low-dimensional materials can be engineered by doping, but in the case of
graphene nanoribbons GNRs the proximity of two symmetry-breaking edges introduces an additional dependence
on the ...
Mechanism for the failure of the Edwards hypothesis in the Sherrington-Kirkpatrick spin glass
(2006)
The dynamics of the Sherrington-Kirkpatrick model at T=0 starting from random spin configurations is
considered. The metastable states reached by such dynamics are atypical of such states as a whole, in that the
probability ...
Activation behaviour and dielectric relaxation in polyvinyl alcohol and multiwall carbon nanotube composite films
(2011)
The dc and ac electrical transport property of Polyvinyl Alcohol-Multiwall Carbon
Nanotubes (PVA-MWNT) composites has been investigated within a temperature range
77?T?300K and in the frequency range 20Hz to 1MHz. The ...
Convective instability in foam drainage
(EDP Sciences, 1998)
The use of a column of steadily drained foam as a sample of wet foam is limited
by flow instability as the liquid fraction is increased. We report a study of this instability, which
takes the form of a convective roll ...
Capacitive micromachined ultrasonic transducers for chemical detection in nitrogen
(2007)
The authors present the prototype of a chemical sensor using a capacitive micromachined ultrasonic
transducer array. Each element in the array consists of a large number of resonating membranes
connected in parallel. A ...
Studies of the oxidation of Mo(110) : a method for nanowire growth
(Trinity College (Dublin, Ireland). School of Physics, 2008)
In this dissertation the oxidation of the molybdenum (110) surface was studied at 900 and 1000 °C and 1 x 10-6 Torr oxygen pressure. Through the use of low energy electron diffraction (LEED), Auger electron spectroscopy ...
Hydrogen bonding as the origin of the switching behavior in dithiolated phenylene-vinylene oligomers
(2013)
We investigate theoretically the switching behavior of a dithiolated phenylene-vinylene oligomer sandwiched between Au(111) electrodes using self-interaction corrected density-functional theory combined with the nonequilibrium ...