Results 61 to 70 of about 2,582 (187)

HoloSpec: Dispersion‐Based 4D Computational Holographic Hyperspectral Imaging

Laser &Photonics Reviews, EarlyView.
HoloSpec, a compact dispersion‐based computational holographic system, achieves four‐dimensional imaging by retrieving 3D spatial structure and high‐resolution spectra from only two monochromatic snapshots. Using a single prism and a monochrome sensor, it resolves 430 spectral channels with 3 nm experimental resolution and 30 μm$\mathrm{\mu}\mathrm{m}$
Jingyan Chen, Yuxing Li, Yanmin Zhu, Edmund Y. Lam   +3 more
wiley   +1 more source

Large‐Area Atomically Flat Monocrystalline Gold Flakes: Recent Advances, Applications, and Future Potential

Small, EarlyView.
This review surveys large‐area monocrystalline gold flakes, covering synthesis, growth mechanisms, and structural properties. It highlights their role as atomically flat, highly conductive platforms for precise nanostructuring, enabling applications such as plasmonics, sensing, and nanoelectronics.
Amro O. Sweedan, Kefan Zhang, Muhammad Y. Bashouti, Thorsten Feichtner   +3 more
wiley   +1 more source

Extending Field Limits in Nanoscale Magnetic Imaging With Metamaterial‐Inspired Magnetic Flux Concentrators

Small, EarlyView.
Micrometer‐sized flower‐shaped metamaterial magnetic flux concentrators are fabricated directly around nano and micromagnetic samples, enabling local field enhancement. Integrated into magnetic sensitive photoemission electron microscopy, they extend the available magnetic field range by up to a factor of five.
Aleix Barrera, Emile Fourneau, Thomas Pirottin, Lourdes Marcano, Radu Abrudan, Rong Huang, Lluis Balcells, Iñaki Orue, Maria‐Luisa Fdez‐Gubieda, Danny Villanueva, Alicia G. Gubieda, Liao Chang, Benoît Vanderheyden, Richard J. Harrison, Alejandro Silhanek, Anna Palau, Sergio Valencia   +16 more
wiley   +1 more source

Conventional volume holography for unconventional Airy beam shapes

Optics Express, 2018
Utilizing multiplexed volume holography, a single optical element, enabling to shape structural variants of non-diffracting Airy wavefronts, from one-dimensional Airy mode to unconventional Airy modes such as vortex Airy and quad Airy modes, has been experimentally realized.
Sunil, Vyas, Yu Hsin, Chia, Yuan, Luo
openaire   +2 more sources

High‐Efficiency Generation of Vectorial Terahertz Beams via Surface‐Wave‐Excited Dielectric Metasurfaces

Small, EarlyView.
ABSTRACT Generating pre‐designed vectorial beams via on‐chip devices can yield many fascinating applications, but traditional diffraction‐based devices are bulky and inefficient. While plasmonic metasurfaces exhibit ultra‐compact sizes and deep‐subwavelength resolutions, their working efficiencies are limited by metallic losses.
Yu He, Yuanxi Liu, Yao Yao, Qingnan Cai, Dumeng Zhang, Xiangyu Jin, Shulin Sun, Zhuo Wang, Lei Zhou   +8 more
wiley   +1 more source

Carbonated Fluorapatite‐Gelatin‐Composites: Morphogenesis and Structure of Kniep's Dumbbells

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Inspired by the pioneering work of Prof. Rüdiger Kniep on fluorapatite‐gelatin nanocomposites also known as “Kniep's Dumbbells,” this study investigates carbonated fluorapatite‐gelatin aggregates synthesized by the double diffusion technique within a gelatin gel.
Elena V. Sturm, Wilder Carrillo‐Cabrera, Olga V. Frank‐Kamenetskaya, Dirk Zahn, Wolfgang W. Schmahl, Erika Griesshaber, Paul Simon   +6 more
wiley   +1 more source

Full‐field X‐ray fluorescence imaging using a Fresnel zone plate as a coded aperture: optimized reconstruction algorithm and first trial of hyperspectral XANES mapping

Journal of Synchrotron Radiation, EarlyView.
The full‐field X‐ray fluorescence imaging method, where a Fresnel zone plate is employed as a coded aperture, was tested for the first time at a beamline, and its corresponding reconstruction code was optimized. It was also employed to perform, also for the first time using full‐field and fluorescence modes, hyperspectral XANES mapping.This study ...
Gautier Landrot, Arkadiusz Dawiec, Björn Eckert, Petra Majewski, Michael Brunner, Andrew Fram, Martin Huth, Guillaume Alizon, Claude Menneglier, Enrico Piasentier, Karine Chaouchi, Stéphanie Blanchandin, Pascal Mercere, Martin Chauvin, Emiliano Fonda   +14 more
wiley   +1 more source

Hyperspectral tomographic diffractive microscopy: Development and applications

Journal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori, Carlos Alberto Chacón Ávila, Matthieu Debailleul, Nicolas Verrier, Olivier Haeberlé   +4 more
wiley   +1 more source

Heat engines for scale invariant systems dual to black holes

Communications Physics
According to holography, a black hole is dual to a thermal state in a strongly coupled quantum system. One of the best-known examples of holography is the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence.
Nikesh Lilani, Manus R. Visser
doaj   +1 more source

Image encryption algorithm based on composite hyper-chaotic system and computational holography

Dianzi Jishu Yingyong
Traditional image encryption algorithms face limitations in the protection of highly sensitive data, transmission efficiency, and diverse applications.
Fu Guoqing, Li Yingna, Li Jincheng
doaj   +1 more source