Results 71 to 80 of about 283,378 (319)

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Quartz tuning forks resonance frequency matching for laser spectroscopy sensing

open access: yesPhotoacoustics, 2022
In this paper, we report on the performance of quartz tuning fork (QTF) based laser spectroscopy sensing employing multiple QTFs. To avoid that resonance frequency mismatching of the QTFs degrades the sensor performance, two types of resonance frequency ...
Yufei Ma   +6 more
doaj   +1 more source

Tunable aromaticity in bicalicenes

open access: yesPhysical Chemistry Chemical Physics, 2015
By transferring electron charge from cyclopropene to cyclopentadiene rings the aromaticity of bicalicenes may be controlled chemically or electrically.
Marcos, Mandado   +1 more
openaire   +3 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

Tunable Optical Filters Using Compound Ring Resonators for DWDM [PDF]

open access: yes, 2003
The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a directional coupler. The loop mirror is implemented using a Sagnac configuration to have the same optical path between the ...
Sánchez-Pena, José Manuel   +3 more
core   +1 more source

Modified Hammerstein-Like Hysteresis Modeling and Composite Control Methods for Fast Steering Mirrors

open access: yesMicromachines
Fast steering mirrors (FSMs), actuated by piezoelectric ceramics, play pivotal roles in satellite laser communication, distinguished by their high bandwidth and fast responsiveness, thereby facilitating the precise pointing and robust tracking of laser ...
Kairui Cao   +5 more
doaj   +1 more source

Detection of Alternative Drugs for Illegal Injection Based on Surface-Enhanced Raman Spectroscopy

open access: yesJournal of Spectroscopy, 2019
Promethazine and scopolamine are two major components of a drug commonly used as a substitute for heroin addiction but with its own potential for abuse.
Lin Bao   +6 more
doaj   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

open access: yesAdvanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell   +3 more
wiley   +1 more source

Adjacent channel interference due to wavelength drift of a tunable laser in base-band and subcarrier multiplexed system [PDF]

open access: yes, 2006
In this paper, we examine the amplitude and the duration of a wavelength drift of the tunable lasers at the most crucial moment, which is the time after the wavelength switch and measure the impact of this drift on the performance of the DWDM system ...
Barry, Liam P.   +5 more
core   +1 more source

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