Results 91 to 100 of about 103,433 (302)
International Journal of Modern Physics D, 2003 An elementary introduction to Maldacena's AdS/CFT correspondence is given, with some emphasis in the Fefferman–Graham construction. This is based on lectures given by one of us (E.A.) at the Universidad Autonoma de Madrid.
Álvarez, Enrique +2 more
openaire +3 more sources
Advanced Science, EarlyView.This work provides a multifunctional programmable transmissive metasurface with phase and amplitude manipulation capability in the sub‐6G band. By applying different coding strategies, the proposed metasurface can realize vortex beam generation, holographic imaging under phase coding mode, and multi‐beam forming in phase‐amplitude joint coding mode ...
Hao Tian Shi +8 more
wiley +1 more source
Surface magnetic field effects in local helioseismology
, 2007 Using helioseismic holography strong evidence is presented that the phase (or equivalent travel-time) of helioseismic signatures in Dopplergrams within sunspots depend upon the line-of-sight angle in the plane containing the magnetic field and vertical ...
Braun +16 more
core +1 more source
Ferroelectric Electron Holography [PDF]
Microscopy and Microanalysis, 2002 Ferroelectrics are increasingly important as materials in semiconductor technology, e.g. for building non-volatile memory chips. For optimisation of the properties of such devices, there is an urgent need for methods, which analyse the ferroelectric properties at nanometer scale. Furthermore, the basic understanding of the interaction of ferroelectrics
Hannes, Lichte +3 more
openaire +2 more sources
Advanced Science, EarlyView.A local‐to‐nonlocal SHG process is demonstrated on an electrically tunable metasurface, combining an LSPR at the FF with a TM‐GMR at the SH to achieve independent dual tunability. Through modal‐overlap engineering of the proposed scheme, a high‐χ(2) MQW meta‐atom delivers strong nonlinearity while achieving 2‐DoF SH control with minimal trade‐offs ...
Jaesung Kim +5 more
wiley +1 more source
Generation of Optical Vortex Arrays Using Single-Element Reversed-Wavefront Folding Interferometer
International Journal of Optics, 2012 Optical vortex arrays have been generated using simple, novel, and stable reversed-wavefront folding interferometer. Two new interferometric configurations were used for generating a variety of optical vortex lattices.
Brijesh Kumar Singh +3 more
doaj +1 more source
Measurement of cavitation in a sliding bearing using digital holography [PDF]
, 2014 This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014) +3 more
core
, 1999 We study the conditions under which atomic condensates can be used as a recording media and then suggest a reading scheme which allows to reconstruct an object with atomic reading beam.
A. Soroko +21 more
core +1 more source
Optics Express, 2005 The principle of unconventional holography, called coherence holography, is proposed and experimentally demonstrated for the first time. An object recorded in a hologram is reconstructed as the three-dimensional distribution of a complex spatial coherence function, rather than as the complex amplitude distribution of the optical field itself that ...
Mitsuo, Takeda +3 more
openaire +2 more sources
Advanced Science, EarlyView.π‐Conjugated T2T SAMRs display an ultranarrow red PL peak (FWHM = 3.2 nm at 625 nm). Crystalline J‐aggregated domains facilitate STEs that lead to photo‐brightening effect. During exposure, emission from the irradiation spot becomes sharper and more intensely red.
Dayeong Kwon +6 more
wiley +1 more source