Results 81 to 90 of about 84,616 (271)

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Coexistence and competition of ferromagnetism and p-wave superconductivity in holographic model

, 2014
By combining a holographic p-wave superconductor model and a holographic ferromagnetism model, we study the coexistence and competition of ferromagnetism and p-wave superconductivity.
Cai, Rong-Gen, Yang, Run-Qiu
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Holographic subregion and holographic focusing

, 2019
Holographic duality and holographic ...
  +5 more sources

Holographic Quantum Circuits from Splitting/Joining Local Quenches [PDF]

, 2019
We study three different types of local quenches (local operator, splitting and joining) in both the free fermion and holographic CFTs in two dimensions. We show that the computation of a quantity called entanglement density, provides a systematic method
Shimaji, Teppei, Takayanagi, Tadashi, Wei, Zixia   +2 more
core   +2 more sources

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Holographic bounds on the UV cutoff scale in inflationary cosmology

, 2003
We discuss how holographic bounds can be applied to the quantum fluctuations of the inflaton. In general the holographic principle will lead to a bound on the UV cutoff scale of the effective theory of inflation, but it will depend on the coarse-graining
Alberghi G L, Albrecht A, Armendariz-Picon C, Bergstrom L, Bombelli L, Bousso R, Bousso R, Bousso R, Bousso R, Bozza V, Brandenberger R, Brandenberger R H, Brandenberger R H, Brandenberger R H, Brustein R, Chang D, Chu C S, Chung D J, Collins H, Cremonini S, Danielsson U H, Danielsson U H, Easther R, Einhorn M B, Einhorn M B, Esko Keski-Vakkuri, Flanagan E E, Frolov A, Gasperini M, Gasperini M, Gibbons G W, Goldstein K, Goldstein K, Hassan S F, Hawking S, Huang Q G, Jacobson T, Kaloper N, Lizzi F, Martin J, Martin S Sloth, Muller R, Shankaranarayanan S, Shiu G, Srednicki M, Starobinsky A A, Starobinsky A A, Starobinsky A A, Starobinsky A A, Strominger A   +49 more
core   +1 more source

Holographic Mapping of Orbital Angular Momentum using a Terahertz Diffractive Optical Neural Network

Advanced Intelligent Discovery, EarlyView.
A compact six‐layer diffractive optical neural network enables direct recognition and spatial mapping of terahertz (THz) orbital angular momentum (OAM) beams. Fabricated by 3D printing, the system distinguishes nine OAM modes and their superpositions with high fidelity, good efficiency, and low crosstalk, offering a scalable solution for THz ...
Wei Jia, Miguel Gomez, Steve Blair, Berardi Sensale‐Rodriguez   +3 more
wiley   +1 more source

Toward Intelligent Multimodal Holography for Real‐Time Chemical Imaging of Dynamic Ion Separation

Advanced Intelligent Discovery, EarlyView.
Intelligent multimodal holography integrates digital off‐axis holography, spectroscopic imaging, and AI‐driven reconstruction to visualize ion transport and chemical dynamics in real time. In this perspective paper, we outline how this approach enables label‐free, chemically specific monitoring of complex environments and discuss its potential to ...
Giovanna Ricchiuti, Sarah I. Allec, Maxim Ziatdinov, Venkateshkumar Prabhakaran   +3 more
wiley   +1 more source

Digital Double-Pulse Holographic Interferometry for Vibration Analysis

Shock and Vibration, 1996
Different arrangements for double-pulsed holographic and speckle interferometry for vibration analysis will be described. Experimental results obtained with films (classical holographic interferometry) and CCD cameras (digital holographic interferometry)
H.J. Tiziani, G. Pedrini
doaj   +1 more source