RSS 1.0Physics
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Physics (Scholarly Publications)
Physics (Scholarly Publications)
Recent Submissions
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Experimental and Theoretical Investigation of the Distance Dependence of Localized Surface Plasmon Coupled Forster Resonance Energy Transfer
(2014)The distance dependence of localized surface plasmon (LSP) coupled Förster resonance energy transfer (FRET) is experimentally and theoretically investigated using a trilayer structure composed of separated monolayers of ... -
Wavelength, concentration, and distance dependence of nonradiative energy transfer to a plane of gold nanoparticles.
(2012)Nonradiative energy transfer to metal nanoparticles is a technique used for optical-based distance measurements which is often implemented in sensing. Both Förster resonant energy transfer (FRET) and nanometal surface ... -
Large Energy Transfer Distance to a plane of Gold Nanoparticles
(2012)The quenching of emission in proximity to metallic surfaces via non-radiative energy transfer is studied for sensing applications. It can also be used for the measurement of distances on the nanoscale. We report on energy ... -
Decay Rates near layers of Au Nanospheres
(2012)The decay rate of quantum emitters near a layer of Au nanospheres is studied in the framework of a Green’s tensor formalism. The localized surface plasmons that can be excited on the gold spheres provide a strong avenue for ... -
Plasmon-assisted Energy Transfer near Coated Metal Cylinders
(2013)In this contribution we consider the decay and energy transfer rates of dipole emitters near dielectric-coated metal cylinders. The surface plasmons excited at the surface of the metal core can act as a very efficient ... -
Spin polaron effective magnetic model for La0.5Ca0.5MnO3
(2004)The conventional paradigm of charge order for La1−xCaxMnO3 for x=0.5 has been challenged recently by a Zener polaron picture emerging from experiments and theoretical calculations. The effective low energy Hamiltonian for ... -
Ferromagnetic polarons in La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3
(2003)Unrestricted Hartree-Fock calculations on La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3 in the full magnetic unit cell show that the magnetic ground states of these compounds consist of 'ferromagnetic molecules' or polarons ordered ... -
Exchange coupling in CaMnO3 and LaMnO3: Configuration interaction and the coupling mechanism
(2002)The equilibrium structure and exchange constants of CaMnO3 and LaMnO3 have been investigated using total-energy unrestricted Hartree-Fock (UHF) and localized orbital configuration interaction (CI) calculations on bulk ... -
Method to improve the noise figure and saturation power in multi-contact semiconductor optical amplifiers: simulation and experiment
(2013)The consequences of tailoring the longitudinal carrier density along the active layer of a multi-contact bulk semiconductor optical amplifier (SOA) are investigated using a rate equation model. It is shown that both the ... -
Contact resistivity and suppression of Fermi level pinning in side-contacted germanium nanowires
(2013)Electrical properties of contact-interfaces in germanium nanowire field effect transistor devices are studied. In contrast to planar bulk devices, it is shown that the active conduction channel and gate length extend between ... -
A simulation study of the kinetics of passage of CO2 and N2 through the liquid/vapor interface of water
(1999)The rate of passage of molecules of carbon dioxide and nitrogen through the vapor–liquid interface of water at 300 K is studied by simulation. Previous work has established the form of the free energy profile which has ... -
Production of Molybdenum Trioxide Nanosheets by Liquid Exfoliation and Their Application in High-Performance Supercapacitors
(2014)Here, we demonstrate a simple method to exfoliate layered molybdenum trioxide (MoO3) crystallites to give multilayer MoO3 nanosheets dispersed in solvents. Exfoliation is achieved by sonicating MoO3 powder in the presence ... -
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 ... -
Liquid Exfoliation of Layered Materials
(2013)Not all crystals form atomic bonds in three dimensions. Layered crystals, for instance, are those that form strong chemical bonds in-plane but display weak out-of-plane bonding. This allows them to be exfoliated into ... -
Enhancing the mechanical properties of BN nanosheet-polymer composites by uniaxial drawing
(2014)We have used liquid exfoliation of hexagonal Boron-Nitride (BN) to prepare composites of BN nanosheets of three different sizes in polyvinylchloride matrices. These composites show low levels of reinforcement, consistent ... -
White light conical diffraction
(2013)