Results 171 to 180 of about 87,331 (315)

Step Function in Momentum Space by a Metagrating

open access: yesAdvanced Optical Materials, EarlyView.
This work demonstrates how the symmetry of the angular transmittance could be broken by a metagrating where the diffraction channels alleviate the requirement for enforcing absorbance. The metagrating retroreflects incident waves with positive incidence angles and transmits waves with negative incidence angles.
Mahmoud A. A. Abouelatta   +3 more
wiley   +1 more source

Controlling the wavefront aberration of a large-aperture and high-precision holographic diffraction grating. [PDF]

open access: yesLight Sci Appl
Li W   +11 more
europepmc   +1 more source

Dark‐State Guided‐Mode Resonance Sensors: Engineering Miniature Sensing Platforms

open access: yesAdvanced Optical Materials, EarlyView.
This research introduces compact guided‐mode resonance sensing using Gaussian‐beam‐induced symmetry breaking to excite dark states. The method generates high‐quality resonance signals in a small area, demonstrating a sensor with 128 micro‐cells and 200 nm RIU−1 sensitivity, showing potential for lab‐on‐chip and biosensing applications.
Yeong Hwan Ko   +2 more
wiley   +1 more source

MEMS Tunable Diffraction Grating for Spaceborne Imaging Spectroscopic Applications. [PDF]

open access: yesSensors (Basel), 2017
Muttikulangara SS   +4 more
europepmc   +1 more source

Wrinkle‐Template Confinement of Kinetically Arrested Cellulose Nanocrystals for Sustainable Large Scale Reflection Gratings

open access: yesAdvanced Optical Materials, EarlyView.
Self‐supported all‐cellulose reflective gratings are fabricated from cellulose nanocrystal dispersions via a confinement printing process. Taking advantage of the reduced fluidity of concentrated, kinetically arrested cellulose nanocrystal dispersions, line arrays can be successfully transferred to dried CNC films.
Yue Dong   +3 more
wiley   +1 more source

Label-Free Biosensor Based on Particle Plasmon Resonance Coupled with Diffraction Grating Waveguide. [PDF]

open access: yesSensors (Basel)
Hsu WT   +8 more
europepmc   +1 more source

Laser‐Written Ruby Emitters in MXenes: Transforming Residual Impurities Into Integrated Narrowband Luminescent Probes

open access: yesAdvanced Optical Materials, EarlyView.
Laser writing converts residual aluminum in MXenes into bright ruby emitters with laser‐like photoluminescence. This approach provides a universal optical tool for mapping material purity. Luminescence sensitivity to temperature, pressure and chemical environment turns synthesis liabilities into assets, enabling the formation of built‐in optical probes
Ilya A. Zavidovskiy   +22 more
wiley   +1 more source

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