Results 161 to 170 of about 369,945 (331)
General analyses of the forced oscillations in a waveguide and in a cavity [PDF]
, 1960 Yoshio Hayashi
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When Cellulose Moves: Smart Sensors and Actuators
Advanced Materials Technologies, EarlyView.This review highlights cellulose‐derived soft actuators alongside with cellulose‐based sensors. Emphasis is placed on their integration into multifunctional devices that couple sensing and actuation to mimic natural motion and adaptability. We also discuss the challenges of achieving robust, reversible, and multi‐stimuli‐responsive motion, and outline ...
Francisco Sousa +2 more
wiley +1 more source
2×2 Microfluidic Optical Switch with Ferromagnetic Fluid Drive
Guangtongxin yanjiu【Objective】Common optical switches are usually polarization sensitive or have complex structures, the article proposes a 2×2 microfluidic optical switch.【Methods】The optical switch proposed in this article employs a waveguide structure.
SHI Zheng +4 more
doaj
Characteristics of the earth-ionosphere waveguide for VLF radio waves
, 1964 James R. Wait
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Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman +5 more
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Self and mutual admittances of waveguides radiating into plasma layers
, 1965 J. Galejs
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Influence of Outcoupling Layers on Top‐Emitting Perovskite Light‐Emitting Diodes
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.Top‐emitting perovskite LEDs offer benefits over typical bottom‐emitting architectures, toward lasing, improved thermal management, and on‐chip fabrication compatibility. Outcoupling layers offer a strategy uniquely applicable to top‐emitting LEDs to optimize EQE by improving optical outcoupling.
James C. Loy +5 more
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Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song +8 more
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Propagation in nonuniform waveguides with impedance walls
, 1964 R. L. Gallawa
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