Results 91 to 100 of about 125,155 (259)

High‐Transmission Mid‐Infrared Bandpass Filters using Hybrid Metal‐Dielectric Metasurfaces for CO2 Sensing

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman, C Williams, Richard Hopper, Florin Udrea, Haider Butt, Timothy D. Wilkinson   +5 more
wiley   +1 more source

A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp   +6 more
wiley   +1 more source

El ushnu y la organización espacial astronómica en la sierra central del Chinchaysuyu

Estudios Atacameños
El ushnu inca tuvo gran importancia en la dominación ideológica en los wamani del Chinchaysuyu. Este artículo ofrece nuevas interpretaciones basadas principalmente en evidencias encontradas en Huánuco Pampa y otros tampus de la sierra central. Se propone
José Luis Pino M
doaj   +1 more source

Next Generation of Thermal Barrier Coatings with High Temperature Metal‐Silicide Metamaterials

Advanced Optical Materials, EarlyView.
Thermal metamaterials have emerged as a powerful platform in the engineering of radiative heat transfer across a broad range of applications, including thermal imaging, passive cooling, and thermo‐photovoltaics. Here, a novel application is presented for metamaterials: thermal dual barrier coatings (TDBCs).
Ali Jishi, Avra S Bandyopadhyay, Xueji Wang, Tyler J Sentz, Aashish Poudel, Daien He, Wenbo Sun, Ashwin K Boddeti, Indra Subedi, Prabin Dulal, Bailey Frye, Nikolas Podraza, Chinmay Khandekar, Fanglin Bao, Thomas Thundat, Zubin Jacob   +15 more
wiley   +1 more source

Could Edible Photonic Structures Be an Alternative to Traditional Food Coloring?

Advanced Optical Materials, EarlyView.
What if color in food came from photonic structures? This perspective introduces structural color as a potential next‐generation solution to replace conventional colorants in foods. It discusses edible photonic materials, their unique benefits, and the technological, safety, and consumer acceptance challenges that must be addressed to bring this ...
Miguel A. Cerqueira, Nicolas Vogel, Martin Lopez‐Garcia, Krassimir P. Velikov, Silvia Vignolini, Lorenzo M. Pastrana   +5 more
wiley   +1 more source

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, EarlyView.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Quantum Emission in Monolayer WSe2 Transferred onto InP Nanowires

Advanced Optical Materials, EarlyView.
WSe2/InP hybrid platform is shown, enabling strain‐localized quantum emission. SEM confirms the hybrid structure, while PL spectra identify discrete emitters and second‐order correlation verifies single‐photon behavior. AFM profiling reveals nanoscale deformation, and the corresponding strain map highlights highly strained regions hosting the emitters,
Palwinder Singh, Jasleen Kaur Jagde, Megha Jain, Edith Yeung, David B. Northeast, Simona Moisa, Seid J. Mohammed, Jean Lapointe, Una Rajnis, Annika Kienast, Philip J. Poole, Dan Dalacu, Kimberley C. Hall   +12 more
wiley   +1 more source

Ferroelectric Fluids for Nonlinear Photonics: Evaluation of Temperature Dependence of Second‐Order Susceptibilities

Advanced Optical Materials, EarlyView.
Nonlinear optical susceptibilities of five different materials that exhibit the ferroelectric nematic phase, as well as smectic A ferroelectric phase, are determined. The materials investigated include archetypal molecular architectures as well as mixtures showing room‐temperature ferroelectric phases.
Matija Lovšin, Luka Cmok, Calum J. Gibb, Jordan Hobbs, Richard J. Mandle, Alenka Mertelj, Irena Drevenšek‐Olenik, Nerea Sebastián   +7 more
wiley   +1 more source

Application of Wavelet Transform for Image Denoising of Spatially and Time Variable Astronomical Imaging Systems

Acta Polytechnica, 2011
We report on our efforts to formulate algorithms for image signal processing with the spatially and time variant Point-Spread Function (PSF) and inhomogeneous noise of real imaging systems.
M. Blažek, E. Anisimova, P. Páta
doaj  

Comparison of the Performance of Fluorescent, Phosphorescent, and TADF Luminophores for Explosives Sensing

Advanced Sensor Research, EarlyView.
Both singlet and triplet populations of the TADF compound 4CzIPN are quenched upon interaction with dinitrotoluene by photoinduced electron transfer. However, their quenching rate is different, with the triplet excitons being more efficiently quenched due to a combination of their longer lifetime and larger population.
Michele Duarte Tonet, Graham A. Turnbull, Eli Zysman‐Colman   +2 more
wiley   +1 more source