Results 141 to 150 of about 431,245 (326)
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 +6 more
wiley +1 more source
Flow-based Generative Emulation of Grids of Stellar Evolutionary Models
The Astrophysical JournalWe present a flow-based generative approach to emulate grids of stellar evolutionary models. By interpreting the input parameters and output properties of these models as multidimensional probability distributions, we train conditional normalizing flows ...
Marc Hon, Yaguang Li, Joel Ong
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 +15 more
wiley +1 more source
Chiral Metasurfaces with Multidimensional Tunability for Optical Chiral States
Advanced Optical Materials, EarlyView.A novel bilayer perovskite chiral metasurface enables tunable transitions between BIC‐associated vortex centres and circularly polarized states via rotational symmetry control. Breaking rotational symmetry and applying in situ rotation to the upper layer allows precise, omnidirectional tuning of C points in momentum space. This evolution forms a Möbius‐
Dayang Lin, Abbas Ghaffari, Qing Gu
wiley +1 more source
Advanced Optical Materials, EarlyView.The impact of decorating the multiresonant thermally activated delayed fluorescence (MR‐TADF) emitter DiKTa with 9,9′‐spirobifluorene units is explored with regard to number, position, and incorporation type. Four novel sky‐blue narrowband MR‐TADF emitters are developed, and in the OLED devices, a structure‐property relationship is observed with ...
Janine Haug +11 more
wiley +1 more source
Investigating the Temperature Sensitivity of UV Line Ratios in the 280 nm Region of Solar-like Stars
The Astrophysical JournalStellar UV spectra are fundamental diagnostics of physical and magnetic properties of stars. For instance, lines like Mg ii at 280 nm serve as valuable indicators of stellar activity, providing insights into the activity levels of Sun-like stars and ...
Valentina Penza +9 more
doaj +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 +5 more
wiley +1 more source
Asteroseismology of Metal-poor Red Giants Observed by TESS
The Astrophysical JournalGalactic archeology has long been limited by a lack of precise masses and ages for metal-poor stars in the Milky Way’s thick disk. However, with TESS providing a growing number of photometric observations, it is possible to calculate masses and ages for ...
Corin Marasco +2 more
doaj +1 more source