Results 181 to 190 of about 2,648,113 (296)

Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media

Advanced Materials Technologies, EarlyView.
Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco, Francesca Vittorioso, Dimitrios C. Zografopoulos, Romeo Beccherelli, Walter Fuscaldo   +4 more
wiley   +1 more source

Amorphous pyrano[3,2-c]quinoline-semicarbazone thin films switch from uniform to heterogeneous morphology and optical modulation upon copper coordination. [PDF]

Sci Rep
El-Saady AA, Ibrahim MA, Mansour AM, El-Nahass MM, Adly OMI, Farag AAM.   +5 more
europepmc   +1 more source

Wafer‐Scale Top‐Down Patterning of Metal Halide Perovskites

Advanced Materials Technologies, EarlyView.
Wafer‐scale patterning of metal halide perovskite films is demonstrated on 150 mm substrates using a chemically amplified resist, polymethyl methacrylate (CAR‐PMMA) and a single reactive ion etching step. The streamlined process preserves film luminescence while defining submicrometer features across the full wafer, enabling dense, scalable integration
Federico Fabrizi, Ardeshir Esteki, Holger Lerch, Saeed Goudarzi, Liudmila Starodubtceva, Gerhard Müller‐Newen, Maryam Mohammadi, Max C. Lemme   +7 more
wiley   +1 more source

One-dimensional mid-IR defect-mode photonic crystal biosensor for oral cancer detection. [PDF]

Sci Rep
Aly AH.
europepmc   +1 more source

Polaritonic Materials: A Comparative Study on the Relaxation Kinetics in Fabry–Perot versus Plasmonic Cavities

Advanced Optical Materials, EarlyView.
Comparing Fabry–Perot and plasmonic nanorod cavities reveals how the number of dark states dictates polariton relaxation. The high number of dark states results in a polaritonic bottleneck, while reducing the number of dark states enables to measure the polaritonic decay.
Nicola Peruffo, Jack M. Woolley, Rahul Bhuyan, Raj Pandya, James Lloyd‐Hughes, Karl Börjesson   +5 more
wiley   +1 more source

Angle-Insensitive Defect-Mode Absorption in Photonic Crystals Containing Hyperbolic Metamaterials. [PDF]

Nanomaterials (Basel)
Liu M, Lu G, Wang B.
europepmc   +1 more source

Photonic-band-gap traveling-wave gyrotron amplifier. [PDF]

Phys Rev Lett, 2013
Nanni EA, Lewis SM, Shapiro MA, Griffin RG, Temkin RJ.   +4 more
europepmc   +1 more source

On‐Chip Photonic Neural Network Architectures

Advanced Optical Materials, EarlyView.
This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong, Berkay Neseli, Seungyeon Cho, Seungsoo Lee, Yeonjun Kim, Seungyoon Choi, Hyo‐Hoon Park, Hamza Kurt   +7 more
wiley   +1 more source

Inhibited radiative decay enhances single-photon emitters. [PDF]

Nat Commun
Burger F, Rinner S, Gritsch A, Sandholzer K, Reiserer A.   +4 more
europepmc   +1 more source

A Layered Two‐Dimensional Hydrogen‐Bonded Organic Framework Based on 2,5,8,11‐Tetrakis(4‐Carboxyphenyl)Perylene Diimide: Structural Nature, Optical and Photophysical Properties

Advanced Optical Materials, EarlyView.
A novel hydrogen‐bonded organic framework (HOF) based on perylene diimide (PDI) is synthesized, structurally and spectroscopically characterized. Its photophysical behavior highlights how supramolecular organizations govern the optical properties, including emission from monomers, aggregates, and excimer‐like species. Structural transformations induced
Mario de la Hoz Tomás, Taito Hashimoto, Boiko Cohen, Yuzuki Murata, Kazuki Shiga, Ryota Hanyu, Ryusei Oketani, Norimitsu Tohnai, Ichiro Hisaki, Abderrazzak Douhal   +9 more
wiley   +1 more source