Results 291 to 300 of about 3,491,555 (340)

Engineered Growth of Perovskite Nanocrystals on Graphene with Subsequent TiO2 Integration for Enhanced Photodetection and Environmental Catalysis

open access: yesAdvanced Optical Materials, EarlyView.
The growth of perovskite nanocrystals on graphene, coupled with an optically active and protective oxide interface, enhances photodetection and environmental catalysis by facilitating efficient charge separation, improved light absorption, and enhanced structural stability, offering a promising approach for advanced optoelectronic and catalytic ...
Thi Thuong Thuong Nguyen   +8 more
wiley   +1 more source

Quantum sensing for NASA science missions. [PDF]

open access: yesEPJ Quantum Technol
Mercer CR   +6 more
europepmc   +1 more source

Topology Optimization Enables Freeform Matrix Fourier Optics

open access: yesAdvanced Optical Materials, EarlyView.
A topology‐optimized freeform metasurface is designed and fabricated to realize matrix Fourier optics, enabling the diffraction of multiple polarization states into distinct far‐field orders. By combining forward design with gradient‐based inverse optimization, high polarization contrast of up to 98.7% is achieved.
Yu‐Tzu Liu   +5 more
wiley   +1 more source

Stability of optical knots in atmospheric turbulence. [PDF]

open access: yesNat Commun
Pires DG   +4 more
europepmc   +1 more source

Highly Efficient Upconverted Fluorescence from Coulombically Assembled Ion Pair

open access: yesAdvanced Optical Materials, EarlyView.
A dicationic Os(II) complex paired with two monoanionic fluorophores is designed to enable highly efficient triplet–triplet annihilation upconversion, achieving a remarkable upconverted fluorescence quantum yield of 13% at 785 nm excitation with a record‐low threshold intensity of 5.9 mW cm⁻2, attributed to diffusion‐free acceleration of energy ...
Ji Hye Baek   +6 more
wiley   +1 more source

Pyroelectric Doping Reversal of MoS₂ p‐n Junctions on Ferroelectric Domain Walls Probed by Photoluminescence

open access: yesAdvanced Optical Materials, EarlyView.
The potential of pyroelectricity for controlling electron doping in monolayer MoS2 on periodically poled LiNbO3 substrates is demonstrated. Pyroelectric charges are shown to convert p‐n into n‐p homojunctions formed in MoS2 on domain walls. The variation in the MoS2 electron density from 300 to 10 K is consistent with the change in the spontaneous ...
Javier Fernández‐Martínez   +5 more
wiley   +1 more source

Coupled Optical Response of Armchair Graphene Nanoribbons and Single Wall Carbon Nanotube Hybrid Structures

open access: yesAdvanced Optical Materials, EarlyView.
A strong interaction between the five‐armchair graphene nanoribbons (GNRs) and the encapsulating single‐walled carbon nanotubes is identified. A reduction of the bandgap of the hybrid structure as well as additional proof for the single H‐terminations of the GNRs are confirmed through a combination of optical absorbance spectroscopy and density ...
Dido Denier van der Gon   +8 more
wiley   +1 more source

A reconfigurable arbitrary retarder array as complex structured matter. [PDF]

open access: yesNat Commun
He C   +33 more
europepmc   +1 more source

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