Results 231 to 240 of about 586,990 (364)

Wavelength‐Selective, High‐Speed, Self‐Powered Isotype Heterojunction n+‐ZnO/n‐Si Photodetector with Engineered and Tunable Spectral Response

open access: yesAdvanced Materials Technologies, EarlyView.
Wavelength‐selective ZnO/Si photodetectors, operating with no power supply. Engineering of the constituting materials converts them from white‐light sensitive to only NIR‐sensitive. When external power is applied, the wavelength selectivity of the devices can be tuned to different spectral ranges.
Michael D. Tsanakas   +7 more
wiley   +1 more source

Probabilistic Richardson extrapolation. [PDF]

open access: yesJ R Stat Soc Series B Stat Methodol
Oates CJ   +4 more
europepmc   +1 more source

Transforming Room Acoustics with Causality‐Driven Dual‐Function Passive Metamaterials

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents an dual acoustic metamaterial for rooms that achieves excellent broadband performance for both sound absorption and sound diffusion. This is done by using causality formulations linking the absorption of the passive system to its volume, yielding an optimal surface area ratio required for excellent sound absorption and while ...
Eric Ballestero   +5 more
wiley   +1 more source

Xerogel Films with Ordered Silica Nanorods Enable Fine‐Tuned Polarized Structural Colors in Modular Nanocomposite Films

open access: yesAdvanced Materials Technologies, EarlyView.
Xerogel films with aligned silica nanorods are prepared through a facile stretching and air‐drying approach. By controlling the alignment of silica nanorods and configuring multilayer film stacks, vibrant and tunable polarized structural colors with hues including green and orange are achieved.
Wu Wei   +4 more
wiley   +1 more source

Time Extrapolation in a Combination Jury-Marching Problem Saves Computer Time

open access: hybrid, 1969
Lansing Sloan, Harold D. Orville
openalex   +1 more source

Modulating D33 Coefficients Through In Situ AgF and Ag2O Growth in PVDF Composites for High‐Performance Piezoelectric Nanogenerators

open access: yesAdvanced Materials Technologies, EarlyView.
In situ, nanoparticle doping enhances the piezoelectric coefficient (**d₃₃**) of PVDF to ≈12 pC/N, while in situ growth of AgF and Ag₂O dopants increases β‐phase concentration. The nanogenerator achieves a 35 V open‐circuit voltage and 1.6 µA short‐circuit current, powering 10 blue LEDs and charging a 50 nF capacitor within 10 s.
Renjun Liu   +15 more
wiley   +1 more source

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