Results 71 to 80 of about 31,877 (296)

Independent Wavefront Multiplexing with Metasurfaces via Non‐Injective Transformation

open access: yesAdvanced Materials, EarlyView.
In this work, a universal metasurface multiplexing strategy is presented based on non‐injective transformation. By jointly optimizing two metasurfaces, multiplexed channels achieve independent wavefront control, overcoming crosstalk limits of single‐layer designs.
Xiao Jin, Thomas Zentgraf
wiley   +1 more source

Raman Marker Bands for In Situ Quality Control During Synthesis of 2D Conjugated Metal–Organic Frameworks

open access: yesAdvanced Materials Interfaces, EarlyView.
The properties of 2D conjugated metal–organic frameworks (2D c‐MOFs) are related to their structure and are influenced by the synthesis conditions. Here, in situ, Raman and transmission electron microscopy (TEM) are used to determine Raman marker bands that characterise the reaction progress and yield of phthalocyanine‐based 2D Cu2[ZnPc‐O8] MOFs. Thus,
Fanny Reichmayr   +8 more
wiley   +1 more source

Lightguide type Maxwellian near-eye display with enlarged horizontal field of view by optical reconfiguration of input image

open access: yesJournal of Information Display, 2022
We present a novel design of the lightguide type optical see-through Maxwellian near-eye display. The proposed display reconfigures vertically long input images to horizontally long output images for wide horizontal viewing-angle.
Woongseob Han   +3 more
doaj   +1 more source

A method for the visualization of high phase gradients in a microscopic image [PDF]

open access: yes, 2008
Holografická mikroskopie je nekonvenční mikroskopická technika, vhodná zvláště pro vzorky s malou optickou hustotou, která umožňuje zviditelnit index lomu pozorovaných objektů.
Druckmüllerová, Hana
core  

Dynamics of Holographic Entanglement Entropy Following a Local Quench

open access: yes, 2016
We discuss the behaviour of holographic entanglement entropy following a local quench in 2+1 dimensional strongly coupled CFTs. The entanglement generated by the quench propagates along an emergent light-cone, reminiscent of the Lieb-Robinson light-cone ...
Rangamani, Mukund   +2 more
core   +2 more sources

Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses

open access: yesAdvanced Materials Technologies, EarlyView.
Real‐time reconfiguration of the acoustic field is achieved using fluidic holographic lenses that dynamically morph their structure via controlled volume changes. This compact, programmable approach eliminates the need for active elements like phased arrays, enabling high‐resolution, adaptive wavefront control with enhanced flexibility for diverse ...
Moustafa Sayed Ahmed, Shima Shahab
wiley   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

open access: yesAdvanced Materials Technologies, EarlyView.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim   +4 more
wiley   +1 more source

Ultrahigh-fidelity full-color holographic display via color-aware optimization

open access: yesPhotoniX
Holographic display offers the capability to generate high-quality images with a wide color gamut since it is laser-driven. However, many existing holographic display techniques fail to fully exploit this potential, primarily due to the system’s ...
Chun Chen   +5 more
doaj   +1 more source

Scaling of Three-Dimensional Computer-Generated Holograms with Layer-Based Shifted Fresnel Diffraction

open access: yesApplied Sciences, 2019
Holographic three-dimensional (3D) displays can reconstruct a whole wavefront of a 3D scene and provide rich depth information for the human eyes. Computer-generated holographic techniques offer an efficient way for reconstructing holograms without ...
Hao Zhang, Liangcai Cao, Guofan Jin
doaj   +1 more source

Interfacial Assembly of Dye‐Doped Microparticles Driven by Combined Optical and Non‐Optical Forces

open access: yesAdvanced Optical Materials, EarlyView.
Optical trapping controls nano‐ and microparticle assembly using various forces, including absorption for photoexcitable resonant molecules. This study demonstrates photoexcitation‐mediated assembly, forming hexagonal‐close‐packed structures at the air/solution interface.
Qing Qing Wang   +9 more
wiley   +1 more source

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