Browsing Physics (Scholarly Publications) by Title
Now showing items 986-1005 of 1696
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Modification of the FRET rate in quantum dot structures
(2011)Förster resonant energy transfer (FRET) can be applied to create energy flow on the nano-scale for light harvesting, colour conversion or sensing applications. The performance of such devices depends on the efficiency of ... -
Molecular dynamics investigation of carbon nanotube junctions in non-aqueoussolutions
(2014)The properties of liquids in a confined environment are known to differ from those in the bulk. Extending this knowledge to geometries defined by two metallic layers in contact with the ends of a carbon nanotube is important ... -
Momentum transfer from quantum vacuum to magnetoelectric matter
(2006)A recent publication [Phys. Rev. Lett. 92, 020404 (2004)PRLTAO0031-900710. 1103/PhysRevLett.92.020404] raises the possibility of momentum transfer from zero-point quantum fluctuations to matter, controlled by applied ... -
MoO3 nanoparticles dispersed uniformly in carbon matrix: a high capacity composite anode for Li-ion batteries
(2011)A MoO3?carbon nanocomposite was synthesized from a mixture of MoO3 and graphite by a controlled ball milling procedure. The as-prepared product consists of nanosized MoO3 particles (2?180 nm) homogeneously distributed in ... -
Morphological and mechanical properties of carbon-nanotube-reinforced semicrystalline and amorphous polymer composites
(American Institute of Physics, 2002)In this work, multiwalled carbon nanotubes were investigated as potential mechanical reinforcement agents in two hosts, polyvinyl alcohol (PVA) and poly(9-vinyl carbazole) (PVK). It was found that, by adding various ... -
Morphology and strain-induced defect structure of ultrathin epitaxial Fe films on Mo(110)
(2002)Fe films in a coverage range of 0.4<~?<~4.7ML were deposited on a Mo(110) substrate in the 300<~T<~700K temperature range. It is found that growth around 300 K is mediated by the step-flow growth mechanism, in contrast ... -
Morphology of Ni ultrathin films on Mo (110) and W (100) studied by LEED and STM
(2007)The morphology of ultrathin Ni lms on Mo(110) and W(100) has been studied by low-energy electron di raction and scanning tunneling microscopy. Ni lms grow pseudomorphically on Mo(110) at 300 K for a coverage of 0.15 ML. ... -
Mortality: a physics perspective
(2021)One of the many interests of the late Dietrich Stauffer was the modelling of mortality. Here we review the features of mortality data for various biological species. Age specific mortality (death rate) leads to a discussion ... -
Mossbauer spectra of mixed crystals: diamagnetically - substituted yttrium iron garnet in the critical region
(American Physical Society, 1972)There is a range of temperature where the Mossbauer spectra of 57Fe3+ in diamagnetically substituted magnetically ordered iron oxides show broad lines and may be reproduced by local-molecular-field theory. The lines can ... -
Mott-Hubbard transition and spin-liquid state on the pyrochlore lattice
(2016)The pyrochlore lattice involves corner-sharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this structure. There are nevertheless short-range ... -
Multi-species gas sensing using monolithic widely tuneable laser diodes
(SPIE, 2005)Widely tuneable laser diodes operating in the 1520 ? ? ? 1570 nm are characterised and compared for use as sources for tuneable laser diode gas absorption spectroscopy. Three gases hydrogen cyanide, ammonia and acetylene ... -
Multi-walled carbon nanotubes covalently functionalized with polyhedral oligomeric silsesquioxanes for optical limiting
(2010)A soluble polyhedral oligomeric silsesquioxane (POSS) functionalized multi-walled carbon nanotube (MWCNT) hybrid material (MWCNT/POSS) was synthesized, in which the POSS content was estimated to be 44wt.%. This material ... -
Multi-wavelength observations and modelling of a canonical solar flare
(ESO, 2009)Aims. We investigate the temporal evolution of temperature, emission measure, energy loss, and velocity in a C-class solar flare from both observational and theoretical perspectives. Methods. The properties of the flare ... -
Multidiagnostic analysis of ultrafast laser ablation of metals with pulse pair
(2010)Copper targets are irradiated in the ablation regime by pairs of equal, time-delayed collinear laser pulses separated on a timescale going from 2 ps to 2 ns. The ablation plume is characterized by ion probe diagnostic, ... -
Multiferroic properties of Bi-substituted Co2MnO4
(AIP, 2008)Single phase polycrystalline samples of BixCo2-xMnO4 (x = 0.0, 0.1 and 0.3) were synthesized by conventional solid state reaction. The crystallographic structure of all samples is found to be cubic spinel (space group ... -
Multipartite entanglement in the Eigenstate Thermalisation Hypothesis
(2020)We study the quantum Fisher information (QFI) and, thus, the multipartite entanglement structure of thermal pure states in the context of the eigenstate thermalization hypothesis (ETH). In both the canonical ensemble and ... -
Multiple spin?phonon relaxation pathways in a Kramer single-ion magnet
(2020)We present a first-principles investigation of spin-phonon relaxation in a molecular crystal of Co2+ single-ion magnets. Our study combines electronic structure calculations with machine-learning force fields and unravels ... -
Multiple-scattering effects in laser ablation plume expansion in gases
(2006)Langmuir probe technique has been employed to characterize the dynamics of UV laser ablation plasma ions from a silver target in different background gases (He, Ne, Ar and Xe). For all these gases the ion time-of-flight ... -
Multiprobe quantum spin Hall bars
(2014)We analyze electron transport in multiprobe quantum spin Hall (QSH) bars using the B¨uttiker formalism and draw parallels with their quantum Hall (QH) counterparts. We find that in a QSH bar the measured resistance changes ...