Now showing items 129-148 of 884

• #### Controlling the properties of surface acoustic waves using graphene ﻿

(Springer Verlag (Germany), 2015-12-23)
The author(s) Surface acoustic waves (SAWs) are elastic waves that propagate on the surface of a solid, much like waves on the ocean, with SAW devices used widely in communication and sensing. The ability to dynamically ...
• #### Coronal mass ejections and angular momentum loss in young stars ﻿

(Cambridge University Press, 2013)
In our own solar system, the necessity of understanding space weather is readily evident. Fortunately for Earth, our nearest stellar neighbor is relatively quiet, exhibiting activity levels several orders of magnitude lower ...
• #### The correlation of dust and gas emission in star-forming environments ﻿

(Oxford University Press (OUP) on behalf of the Royal Astronomical Society, 2014-01-01)
We present ammonia maps of portions of the W3 and Perseus molecular clouds in order to compare gas emission with submillimetre continuum thermal emission which are commonly used to trace the same mass component in star-forming ...
• #### Counting molecular-beam grown graphene layers ﻿

(American Institute of Physics, 2013)
We have used the ratio of the integrated intensity of graphene's Raman G peak to that of the silicon substrate's first-order optical phonon peak, accurately to determine the number of graphene layers across our molecular-beam ...
• #### Coupled surface plasmon polaritons on thin metal slabs corrugated on both surfaces ﻿

(American Physical Society, 2004)
A modelling study of the effect of coupled surface plasmon polaritons (SPPs) on the optical response of a thin metal film corrugated on both surfaces is presented. Initially the case of conformally corrugated metal films ...
• #### Coupled surface plasmon-polariton mediated photoluminescence from a top-emitting organic light-emitting structure ﻿

(American Institute of Physics, 2004)
We report strong photoluminescence from a top-emitting organic light-emitting structure where emission takes place through a thin (55 nm) silver film. We show that this emission is mediated via coupled surface plasmon-polariton ...
• #### Coupled surface plasmons and optical guided wave exploration of near-surface director profile ﻿

(Institute of Physics and Deutsche Physikalische Gesellschaft, 2007)
For a liquid crystal (LC) cell with thin silver claddings it is possible, using a high index coupling prism, to excite both surface plasmon modes and ordinary optical guided modes. In a situation where the tilt of the ...
• #### Coupled surface-plasmon-like modes between metamaterial ﻿

(American Physical Society, 2007)
Perfectly conducting metals may be structured with holes to make metamaterials that support surface-plasmon-like modes at microwave frequencies. Results are presented for Fabry-Pérot-like standing wave resonances formed ...
• #### The coupling of microwave radiation to surface plasmon polaritons and guided modes via dielectric gratings ﻿

(American Institute of Physics, 2000)
It is shown that an absorbing dielectric layer, sinusoidally modulated in height, on top of a planar metal substrate, may be used to provide coupling between both s- and p-polarized incident microwave photons and surface ...
• #### Coupling of near-grazing microwave photons to surface plasmon polaritons via a dielectric grating ﻿

(American Physical Society, 2000)
A dielectric grating on top of a planar metal substrate is shown to couple near-grazing microwave photons to surface plasmon polaritons (SPPs). It is shown that when the grating grooves are oriented such that they are ...
• #### Coupling Plasmonic Metamaterials To Single-Quantum-Well Gain ﻿

(Karlsruher Institut für Technologie, 2011-07-01)
Reducing unfavourable losses in metallic nanostructures by optical gain is currently one of the central topics in plasmonics and metamaterials research. The main prerequisite for this is the coupling between the plasmonic ...
• #### Critical current scaling in long diffusive graphene-based Josephson junctions ﻿

(arXiv.org, 2016)
We present transport measurements on long diffusive graphene-based Josephson junctions. Several junctions are made on a single-domain crystal of CVD graphene and feature the same contact width of ~9$\mu$m but vary in length ...
• #### Damped vacuum states of light ﻿

(IOP Publishing, 2016-08-10)
We consider one-dimensional propagation of quantum light in the presence of a block of material, with a full account of dispersion and absorption. The electromagnetic zero-point energy for some frequencies is damped ...
• #### Damping the zero-point energy of a harmonic oscillator ﻿

(-, 2016)
The physics of quantum electromagnetism in an absorbing medium is that of a field of damped harmonic oscillators. Yet until recently the damped harmonic oscillator was not treated with the same kind of formalism used to ...
• #### Dataset for Localized plasmons induced by spatial conductivity modulation in graphene ﻿

(University of Exeter, 2016-03-03)
Dataset supporting publication titled "Localized plasmons induced by spatial conductivity modulation in graphene"
• #### Day-side z’-band emission and eccentricity of Wasp-12b ﻿

(IOP Publishing for American Astronomical Society, 2010)
We report the detection of the eclipse of the very hot Jupiter WASP-12b via z -band time-series photometry obtained with the 3.5 m Astrophysical Research Consortium telescope at Apache Point Observatory. We measure a ...
• #### The Deep Blue Color of HD 189733b: Albedo Measurements with Hubble Space Telescope/Space Telescope Imaging Spectrograph at Visible Wavelengths ﻿

(IOP Publishing, 2013)
We present a secondary eclipse observation for the hot Jupiter HD 189733b across the wavelength range 290-570 nm made using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. We measure geometric albedos ...
• #### Delay effect of switch-on in a supertwisted nematic cell ﻿

(American Institute of Physics, 2004)
By using a convergent beam system and the fully leaky guided mode technique the switch-on dynamics of an 180° supertwisted nematic have been studied. Using the Ericksen–Leslie theory and analyzing the guided mode data taken ...
• #### Dependence of anisotropy and damping on shape and aspect ratio in micron sized Ni 81Fe 19 elements ﻿

(American Institute of Physics, 2004)
We have studied magnetic anisotropy and damping in Ni81Fe19 elements of different shape and aspect ratio by time-resolved scanning Kerr effect microscopy and micromagnetic simulations. Square elements show a fourfold ...
• #### Dependence of spatial coherence of coherent suppression of magnetization precession upon aspect ratio in Ni 81Fe 19 microdots ﻿

(American Institute of Physics, 2005)
Coherent suppression of magnetization dynamics in circular microdots of Ni81Fe19 has been observed by time-resolved scanning Kerr effect microscopy. The applied pulsed field rose sharply, stimulating precession, and then ...