Results 261 to 270 of about 620,842 (320)

Wide Color Gamut and High Sensitivity in Luminescent Thermal Indicators from an Organic Energy Donor‐Acceptor System with Tunable Molecular Interactions

open access: yesAdvanced Optical Materials, EarlyView.
A novel energy donor‐acceptor system based on organic small molecules is studied and applied in thermally responsive thin films. Their photoluminescence is gradually tuned as a function of the annealing temperature, resulting in an attractive property for quality control and thermal patterning technologies. The films are evaluated as thermal indicators,
Guillermo Martínez‐Denegri   +2 more
wiley   +1 more source

Predictive Design to Determine Optimal Absorber Placement in Colloidal Photonic Crystals

open access: yesAdvanced Optical Materials, EarlyView.
The inclusion of absorbing material is known to increase color saturation in photonic crystals. Predictive design based on mathematical structure optimization is used to identify optimal designs for the absorber amount and position within a photonic colloidal crystal and experimentally realized. This strategy shows that the placement of the absorber at
Gudrun Bleyer   +5 more
wiley   +1 more source

Unidirectional Focusing of Light Using Structured Diffractive Surfaces

open access: yesAdvanced Optical Materials, EarlyView.
This study presents a reciprocal diffractive unidirectional focusing design based on linear and isotropic layers. A set of cascaded diffractive layers is designed using deep learning to achieve efficient forward light focusing while suppressing backward propagation across various illumination angles.
Yuhang Li   +4 more
wiley   +1 more source

High Fidelity Waveguides Through Vitreous Media Recomposition for Next Generation Photonic Devices

open access: yesAdvanced Optical Materials, EarlyView.
A newly designed aluminosilicate glass enables the fabrication of femtosecond laser‐written optical waveguides with ultra‐low propagation losses of −0.020 dB cm−1 at 1310 nm and −0.037 dB cm−1 at 1550 nm. Raman, Brillouin, and electron microscopy analyses reveal the mechanisms behind refractive index modifications, highlighting the role of glass ...
T Toney Fernandez   +9 more
wiley   +1 more source

Stellar structure via truncated M-fractional Lane-Emden solutions. [PDF]

open access: yesSci Rep
Nouh MI   +5 more
europepmc   +1 more source

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