Results 111 to 120 of about 84,616 (271)

Extended Holographic dark energy

, 2004
The idea of relating the infrared and ultraviolet cutoffs is applied to Brans-Dicke theory of gravitation. We find that extended holographic dark energy from the Hubble scale or the particle horizon as the infrared cutoff will not give accelerating ...
Q-G. Huang, R. Bousso, Yungui Gong
core   +1 more source

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

Laser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Constraining holographic inflation with WMAP

, 2011
In a class of recently proposed models, the early universe is strongly coupled and described holographically by a three-dimensional, weakly coupled, super-renormalizable quantum field theory.
, , , A. Lewis, A.G. Riess ., F. Feroz, I. Kanitscheider, Kostas Skenderis, M. Hobson, P. Adshead, P. McFadden, P. McFadden, P. McFadden, Paul McFadden, Raphael Flauger, Richard Easther, S. Seager, S. Seager, S. Weinberg, T. Kobayashi, WMAP collaboration   +20 more
core   +1 more source

Optically Bound Rapid Plasmonic Nanorod Dimers: Anisotropic Dynamics Driven by Light‐Fluidic Cooperation

Laser &Photonics Reviews, EarlyView.
Optically confined gold nanorods exhibit cooperative light‐driven dynamics, forming mobile end‐to‐end dimers with orientation‐dependent propulsion. Using structured laser traps and an opto‐thermo‐hydrodynamic model, we uncover how optical binding, polarization‐induced torque, and near‐surface hydrodynamics govern their motion.
José A. Rodrigo, Tatiana Alieva
wiley   +1 more source

Studying the Recent Improvements in Holograms for Three-Dimensional Display

International Journal of Optics, 2014
Displayers tend to become three-dimensional. The most advantage of holographic 3D displays is the possibility to observe 3D images without using glasses. The quality of created images by this method has surprised everyone. In this paper, the experimental
Hamed Abbasi, Talie Zarei, Neda Jalali Farahani, Adeleh Granmayeh Rad   +3 more
doaj   +1 more source

Thermal non-Gaussianity in holographic cosmology

, 2008
Recently it has been shown that the thermal holographic fluctuations can give rise to an almost scale invariant spectrum of metric perturbations since in this scenario the energy is proportional to the area of the boundary rather than the volume. Here we
't Hooft, Acquaviva, Albrecht, Alexander, Alexander, Alexander, Alishahiha, Arkani-Hameda, Armendariz-Picon, Babich, Bardeen, Bardeen, Benoit, Biswas, Brandenberger, Brandenberger, Brandenberger, Brandenberger, Chen, Chen, Chen, Chen, Chen, de Bernardis, Garriga, Goldstein, Guth, Guth, Halverson, Hanany, Hawking, Jian-Pin Wu, Kodama, Koh, Koh, Komatsu, Komatsu, Komatsu, Konopka, Li, Linde, Magueijo, Magueijo, Magueijo, Magueijo, Maldacena, Markopoulou, Mason, Miller, Misra, Mukhanov, Mukhanov, Nayeri, Peebles, Piao, Sachs, Seery, Seery, Silverstein, Singh, Spergel, Spergel, Starobinsky, Stephens, Traschen, Yi Ling   +65 more
core   +1 more source

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

Laser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan, Yanlei Liu, Kun Yu, Han Dai, Tianxu Jia, Zhiying Chen, Junsuk Rho, Yufang Liu   +7 more
wiley   +1 more source

Holographic Beam Measurements of the Canadian Hydrogen Intensity Mapping Experiment (CHIME)

The Astrophysical Journal
We present the first results of the holographic beam-mapping program for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). We describe the implementation of a holographic technique as adapted for CHIME, and introduce the processing pipeline ...
Mandana Amiri, Arnab Chakraborty, Simon Foreman, Mark Halpern, Alex S Hill, Gary Hinshaw, T. L. Landecker, Joshua MacEachern, Kiyoshi W. Masui, Juan Mena-Parra, Nikola Milutinovic, Laura Newburgh, Anna Ordog, Ue-Li Pen, Tristan Pinsonneault-Marotte, Alex Reda, Seth R. Siegel, Saurabh Singh, Haochen Wang, Dallas Wulf, The CHIME Collaboration   +20 more
doaj   +1 more source

Wavelength and Full‐Polarization Encrypted Orbital Angular Momentum Meta‐Holography

Laser &Photonics Reviews, EarlyView.
By multiplexing three independent degrees of freedom of light, a single‐layer geometric‐phase metasurface encrypts 24 distinct holographic images across 3 wavelengths, 12 pairs of orthogonal polarizations, and 4 OAM channels, taking advantage of axial chromatic dispersion to reconstruct the color images at the same plane. ABSTRACT Multiplexing multiple
Yue Han, Mingna Xun, Yuqing He, Sheng Ye, Weiping Wan, Yan Li   +5 more
wiley   +1 more source

The Application of Telemedicine in Surgery

Med Research, EarlyView.
This figure provides an overview of the content presented in this article. Telemedicine is integrated throughout the entire surgical workflow, with distinct applications across the preoperative, intraoperative, and postoperative phases. These applications are enabled by a suite of supporting technologies, while the associated implementation challenges ...
Yufan Yang, Chang Liu, Xue Sun, Yiting Wang, Minghui Zhao, Shuya Jiang, Haoling Zhang, Wangzheqi Zhang, Wenwen Shi   +8 more
wiley   +1 more source