Browsing Physics (Scholarly Publications) by Title
Now showing items 707-726 of 1675
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In situ characterization of one-dimensional plasmonic Ag nanocluster arrays
(2011)One-dimensional Ag nanoparticle arrays have been grown on step-bunched vicinal Al2O3 in ultrahigh vacuum using deposition at a glancing angle. The structures grown showed a strong optical anisotropy in the visible region ... -
In situ synthesis and optical limiting response of poly(N-vinylcarbazole) functionalized single-walled carbon nanotubes
(Institute of Physics, 2010)A new poly(N-vinylcarbazole)-covalently grafted single-wall carbon nanotube (SWNT?PVK) hybrid material was synthesized by an in situ anionic polymerization reaction of N-vinylcarbazole and the negatively charged SWNTs. ... -
In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities
(2020)The precise measurement of low temperatures is a challenging, important, and fundamental task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic systems due to their potential for ... -
In vitro localisation and degradation of few-layer MoS2 submicrometric plates in human macrophage-like cells: a label free Raman micro-spectroscopic study
(2020)Monitoring the uptake, micro-environment and fate of micro or nano scaled particulate materials in cells is of paramount importance for the emerging fields of toxicology and medicine. Such particulate materials are known ... -
In-band OSNR monitoring using a pair of Michelson fiber interferometers
(2010)Two polarization-independent Michelson fiber inter ferometers with different optical delays were used to measure the in-band OSNR of an optical signal from 5 to 30dB within an accuracy of 0.5dB. Using an expansion ... -
In-plane magnetic anisotropies in Fe3O4 films on vicinal MgO (100)
(American Physical Society, 2008)Ferromagnetic resonance was used to study the influence of vicinal (miscut) angle and film thickness on in-plane fourfold and uniaxial magnetic anisotropies in epitaxial Fe3O4 films grown on vicinal MgO(100) surfaces. The ... -
In-situ characterisation of one-dimensional plasmonic Ag nanocluster arrays
(2011)One-dimensional Ag nanoparticle arrays have been grown on step-bunched vicinal Al2O3 in ultrahigh vacuum using deposition at a glancing angle. The structures grown showed a strong optical anisotropy in the visible region ... -
Inadequacy of the asymptotic approximation for the interlayer coupling in Fe/Ag/Fe and Fe/Au/Fe (001) trilayers
(American Physical Society, 1999)We discuss the basic assumptions underlying the stationary phase approximation to the interlayer exchange coupling between magnetic materials across nonmagnetic spacers. We show that, for temperatures and spacer thicknesses ... -
Incorporating magnetic field observations in wind models of low-mass stars
(2014)Stellar winds of cool, main-sequence stars are very tenuous and difficult to observe. Despite carrying away only a small amount of the stellar mass, they are important for regulating the rotation of the star and, ... -
Increased response/recovery lifetimes and reinforcement of Polyaniline Nanofiber Films using Carbon Nanotubes
(2012)We have prepared high surface area, conductive, mechanically robust, responsive polyaniline-carbon nanotune composite films. These were produced by filtration from dilute dispersions of polyaniline nanofibers and single-walled ... -
Increasing Spatial Fidelity and SNR of 4D-STEM using Multi-frame Data Fusion
(2021)4D-STEM, in which the 2D diffraction plane is captured for each 2D scan position in the scanning transmission electron microscope (STEM) using a pixelated detector, is complementing, and increasingly replacing existing ... -
Indirect Exchange and RKKY Interactions in Magnetically-Doped Graphene
(2013)Magnetically-doped graphene systems are potential candidates for application in future spintronic devices. A key step is to understand the pairwise interactions between magnetic impurities embedded in graphene that are ... -
Indirect exchange coupling between magnetic adatoms in carbon nanotubes
(2005)The long-range character of the exchange coupling between localized magnetic moments indirectly mediated by the conduction electrons of metallic hosts can play a significant role in determining the magnetic order of ... -
Influence of an Au capping layer on the magnetic properties of CoPt nanowires
(2011)Equiatomic CoPt nanowires with a gold cap layer have been fabricated by electrochemical template synthesis. Au improves the structural and magnetic properties of the L10 ordered CoPt, leading to coercivities of up to 1.43 ... -
Influence of annealing on the bias voltage dependence of tunnelling magnetoresistance in MgO double-barrier magnetic tunnel junctions with CoFeB electrodes
(American Institute of Physics, 2006)Double-barrier magnetic tunnel junctions with two MgO barriers and three CoFeB layers exhibiting tunneling magnetoresistance (TMR) values of more than 100% were fabricated. The bias voltage dependence of the TMR ratio is ... -
Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films
(2005)Low frequency conduction noise (1/f noise) properties of epitaxial magnetite (Fe3O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature ... -
Influence of cavity lifetime on high-finesse microcavity two-photon absorption photodetectors
(2007)For optical pulse incidence as compared with continuous-wave incidence, the enhancement of two-photon absorption inside a high-finesse planar microcavity is reduced, the pulse inside the cavity and the cavity spectrum ... -
The influence of drinking water constituents on the level of microplastic release from plastic kettles
(2022)Microplastic (MP) release from household plastic products has become a global concern due to the high recorded levels of microplastic and the direct risk of human exposure. However, the most widely used MP measurement ... -
Influence of elastic strains on the mask ratio in glassy polymer nanoimprint
(American Institute of Physics, 2005)During glassy polymer nanoimprint, a supported film is extruded from protruding spunchd to recessed scavityd regions of a patterned stamp. The completeness of this extrusion determines the mask ratio for lithographic ...
