Results 71 to 80 of about 170,837 (296)

Development of high resolution arrayed waveguide grating spectrometers for astronomical applications: first results

open access: yes, 2016
Astrophotonics is the next-generation approach that provides the means to miniaturize near-infrared (NIR) spectrometers for upcoming large telescopes and make them more robust and inexpensive. The target requirements for our spectrograph are: a resolving
Bland-Hawthorn, Joss   +6 more
core   +1 more source

Efficient, broadband and compact metal grating couplers for silicon-on-insulator waveguides [PDF]

open access: yes, 2007
Metal grating couplers for Silicon-on-Insulator waveguides are proposed. A silver grating coupler with 33% coupling efficiency is designed. A gold gating coupler prototype is fabricated using Focused Ion Beams demonstrating over 10% coupling efficiency. (
Baets, Roel   +5 more
core   +4 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi   +3 more
wiley   +1 more source

Design and fabrication of an automotive frame model leveraging anisotropic topology optimization and tailored fiber placement

open access: yesMechanical Engineering Journal
This paper presents a case study of the design, fabrication, and evaluation of an automotive rear-frame model made of variable axial composites (VAC), using a tailored fiber placement (TFP) technique.
Yoshihiro IWANO   +8 more
doaj   +1 more source

Fiber-optic demultiplexers with high mechanical resistance [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2011
The paper observes possibilities of fused fiber-optic multiplexer-demultiplexer creation with resistance to mechanical effect. Fabrication method and the equipment for their production are presented.
Yakovlev M. Ya.   +3 more
doaj   +2 more sources

Fiber-junction design for directional bending sensors

open access: yesnpj Flexible Electronics, 2021
Flexible sensors in wearable electronics have become increasingly multifunctional due to the development of materials synthesis and structure design.
Zhundong Li   +17 more
doaj   +1 more source

Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release

open access: yesAdvanced Engineering Materials, EarlyView.
Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro   +3 more
wiley   +1 more source

A Double-Cladding Single Polarization Photonic Crystal Fiber and Its Structure Deviation Tolerance

open access: yesIEEE Photonics Journal, 2018
We propose a novel broadband single-polarization single-mode (SPSM) photonic crystal fiber with hexagonally latticed circular airholes. Combined with our fabricated polarization maintaining fiber, it has demonstrated that the enlarged air holes in the ...
Yating Shen   +8 more
doaj   +1 more source

Design and fabrication of side-channel photonic crystal fiber

open access: yes2012 Photonics Global Conference (PGC), 2012
In this work we propose a new design of photonic crystal fiber with a side channel in the cladding region. The advantage of this fiber design is to provide easy access to the fiber core for applications requiring real-time measurement and longer interactions with light, such as microfluidic devices and solution-based optical sensors.
Cui, Y.   +8 more
openaire   +2 more sources

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