Results 41 to 50 of about 25,271 (238)

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

Development of large radii half-wave plates for CMB satellite missions

, 2014
The successful European Space Agency (ESA) Planck mission has mapped the Cosmic Microwave Background (CMB) temperature anisotropy with unprecedented accuracy.
Brown, M., de Bernardis, P., de Maagt, P., Ellison, B., Haynes, V., Henry, M., Maffei, B., Masi, S., Ng, M. W., Noviello, F., Pagano, L., Piacentini, F., Pisano, G., Salatino, M., Shortt, B.   +14 more
core   +1 more source

Dual-polarised dielectric resonator antenna with high isolation and low cross-polarisation

Electronics Letters, 2009
A novel, dual-polarised dielectric resonator antenna with high-isolation and low cross-polarisation is presented using a hybrid feeding technique. Port isolation of 35.9 dB and a cross-polarisation level of −34 dB are measured. The impedance bandwidth of return loss less than −10 dB is 440 MHz (7.9%) with a centre frequency of 5.7 GHz.
Xiao-rong Tang, Shun-Shi Zhong, L.-B. Kuang, Zhu Sun   +3 more
openaire   +2 more sources

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

Advanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin, Vincenzo Aglieri, Young‐Gyun Jeong, Atiye Pezeshki, Lilian Skokan, Mostafa Shagar, Yuechen Jia, Pablo Bianucci, Andreas Ruediger, Emanuele Orgiu, Andrea Toma, Luca Razzari   +11 more
wiley   +1 more source

Ultrasensitive and fast single wavelength plasmonic hydrogen sensing with anisotropic nanostructured Pd films

, 2018
Anisotropic nanostructured porous Pd films are fabricated using oblique angle deposition in vacuum on a glass substrate. They display a dichroic response, due to localised surface plasmon resonances (LSPR) within the nanoparticles forming the film ...
Borensztein, Yves, Watkins, William L.
core   +2 more sources

Polarisation and wavelength selective transmission through nanohole structures with multiple grating geometry [PDF]

, 2008
Excitation and localization of surface plasmon polariton modes in metal-dielectric structures can be utilized to construct nanophotonic materials and devices with tuneable optical dispersion.
Künnemeyer, Rainer, Nemanya, Sedoglavich, Rubanov, Sergey, Sharpe, John C.   +3 more
core   +1 more source

Polarisation‐independent diffraction grating based on dielectric metasurface [PDF]

Electronics Letters, 2019
Dielectric metasurfaces composed of arrays of subwavelength structures are capable of completely manipulating the phase, amplitude, and polarisation of light. In this Letter, a dielectric metasurface grating imitating the blazing behaviour of saw‐tooth gratings for imaging spectrometer is proposed.
Wei-Min Shen, Jia-Cheng Zhu, Jian-Kang Zhou   +2 more
openaire   +2 more sources

Harnessing Outer Space for Improved Electrocaloric Cooling

Advanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo, Hyung Rae Kim, Joo Ho Yun, Hyunkyu Kwak, Do Hyeon Kim, Se‐Yeon Heo, Rujun Ma, Gil Ju Lee, Young Min Song   +8 more
wiley   +1 more source

Transport theory and low energy properties of colour superconductors [PDF]

, 2001
The one-loop polarisation tensor and the propagation of ``in-medium'' photons of colour superconductors in the 2SC and CFL phase is discussed. For a study of thermal corrections to the low energy effective theory in the 2SC phase, a classical transport ...
Litim, Daniel F.
core   +3 more sources

Array of circular-polarised cross dielectric resonatorantennas

Electronics Letters, 1996
A compact array of circular polarised cross-shaped dielectric resonator antennas (XDRAs) is presented. The array consists of 2/spl times/2 XDRAs elicited by microstrip-fed slot apertures in the X-band. By using sequential rotation to feed the XDRAs, the circular polarisation bandwidth is significantly increased from 5% for the individual XDRA to 16% in
Apisak Ittipiboon, A. Petosa, Michel Cuhaci   +2 more
openaire   +2 more sources