Browsing Physics (Scholarly Publications) by Title
Now showing items 139-158 of 1694
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Calculation of gain?current characteristics in ZnCdSe?ZnSe quantum well structures including many body effects.
(American Institute of Physics, 1996)The gain-spontaneous recombination characteristics have been calculated for a 40 ? Zn0.8Cd0.2Se-ZnSe quantum well including many body effects. We examine the effect of the inclusion of the Coulomb enhancement on the gain ... -
Calculation of model Hamiltonian parameters for LaMnO3 using maximally localized Wannier functions
(2010)In this work we demonstrate that maximally localized Wannier functions (MLWFs) based on Kohn-Sham band structures provide a very robust and systematic way to construct realistic, materials-specific tight-binding models for ... -
CALPHAD-assisted development of in-situ nanocrystallised melt-spun Co-Fe-B alloy with high Bs (1.57 T)
(2021)A thermodynamics-based approach, Calculation of Phase Diagram (CALPHAD), combined with topological instability parameters are proposed and experimentally evaluated, in order to optimise in-situ nanocrystallisation of rapidly ... -
Can soap films be used as models for mortality studies?
(2018)We report studies of the life expectancy of sets of parallel liquid films made from surfactant solution and contained in cylindrical perspex tubes. The tubes are sealed at the bottom and vertically placed. From our analysis ... -
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 ... -
Carbon nanotube: a low-loss spin-current waveguide
(2010)We demonstrate with a quantum-mechanical approach that carbon nanotubes are excellent spin-current waveguides and are able to carry information stored in a precessing magnetic moment for long distances with very little ... -
Carbon nanotubes and nanotube composites for nonlinear optical devices
(2009)Carbon nanotubes possess not only outstanding mechanical, electrical and thermal properties but also unique nonlinear optical properties. In this Feature Article, we review the recent developments of the carbon nanotube ... -
Carrier density dependence of plasmonenhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure
(2015)An array of Ag nanoboxes fabricated by helium-ion lithography is used to demonstrate plasmon-enhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure. The nonradiative energy transfer, from an ... -
Carrier-density dependence of the photoluminescence lifetimes in ZnCdSe/ZnSSe quantum wells at room temperature
(1999)Photoluminescence lifetimes have been measured at room temperature as a function of carrier density in ZnCdSe/ZnSSe quantum wells. We show that, at low carrier density (53109?5 31010 cm22), nonradiative recombination ... -
CdTe Quantum Dot/Dye Hybrid System as Photosensitizer for Photodynamic Therapy
(2010)We have studied the photodynamic properties of novel CdTe quantum dots?methylene blue hybrid photosensitizer. Absorption spectroscopy, photolumines- cence spectroscopy, and fluorescence lifetime imaging of this system ... -
Chandra observations of coronal emission from the early-G supergiants Alpha and Beta Aquarii
(University of Colorado, 2005)We report Chandra detections of coronal X-rays from the early-G supergiants ? Aquarii (HD209750: G2 Ib) and ? Aquarii (HD204867: G0 Ib). Previous ROSAT observations of these archetype \hybrid chromosphere" stars were ... -
Chapter 16: The structure of liquid foams
(CRC Press, 2018) -
Characterisation of a fast microcapillary discharge plasma using a compact multi-deflector Thomson parabola ion analyser
(IEEE, 2001)A compact Thomson parabola ion analyser has been developed and tested on a fast microcapillary plasma discharge. The discharge cell comprises a circular parallel-plate capacitor (1 - 2 nF) with a 50 micron sized hole in ... -
Characterisation of n-type γ-CuCl on Si for UV optoelectronic applications
(2007)The use of co-evaporation of ZnCl2 with CuCl in order to achieve n-type conductivity in CuCl is reported herein. Linear current–voltage (IV) characteristics in the range of ±4 V have been measured using Cu–Au electrical ... -
Characterising and control of ammonia emission in microbial fuel cells
(2020)The serious ammonia (NH3) emission of air-cathode microbial fuel cells (MFCs) was reported but how to control and mitigate the emission hasn’t been well studied. Considering the importance of the issue for the application ... -
Characterising Complexity in Solar Magnetogram Data using a Wavelet-based Segmentation Method
(2010)The multifractal nature of solar photospheric magnetic structures are studied using the 2D wavelet transform modulus maxima (WTMM) method. This relies on computing partition functions from the wavelet transform skeleton ... -
Characterization of a multi-electrode bulk-SOA for low NF in-line amplification in passive optical networks
(2010)A bulk semiconductor optical amplifier (SOA) utilizing a multi-contact biasing method is characterized as a function of the bias current supplied to each section Firstly, amplified spontaneous emission spectra and ... -
Charge carrier mobility in hybrid halide perovskites
(2015)The charge transport properties of hybrid halide perovskites are investigated with a combination of density functional theory including van der Waals interaction and the Boltzmann theory for diffusive transport in the ...