Results 61 to 70 of about 3,295,861 (246)

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Numerical Simulation of Unsteady Flow Past a Rotating Wells Turbine with Modified Blades

open access: yes한국해양공학회지
Wells turbines used in wave power generation have the advantage of being usable in reciprocating flow, but they also face many unsolved problems, such as self-starting performance, low efficiency, and noise.
Eru Kurihara   +3 more
doaj   +1 more source

Serration Behavior in Pd77.5Cu6Si16.5 Alloy

open access: yesMetals, 2016
The strain-rate-dependent plasticity under uniaxial compression at the strain rates of 2 × 10−3, 2 × 10−4 and 2 × 10−5 s−1 in a Pd77.5Cu6Si16.5 alloy is investigated.
Zhong Wang   +5 more
doaj   +1 more source

Serrated flow and failure behaviors of a Hadfield steel at various strain rates under extensometer-measured strain control tensile load

open access: yesJournal of Materials Research and Technology, 2020
A Hadfield steel has been investigated to clarify the serrated flow and to explore the failure behavior at room temperature. The tensile experiments were performed under extensometer-measured strain control, rather than under conventional cross-head ...
Liqiang Zhang   +3 more
doaj   +1 more source

Bone‐Inspired Recyclable Composites for Damage‐Tolerant Circular Materials

open access: yesAdvanced Functional Materials, EarlyView.
Bone‐inspired architected composites are developed by combining osteon‐like reinforcements with a recyclable Elium thermoplastic matrix. The hierarchical architecture redirects cracks and promotes energy dissipation, while enabling recovery of intact, aligned, load‐bearing reinforcement units that retain their original stiffness, revealing a route ...
Alessandro Stagni   +4 more
wiley   +1 more source

On the PLC Effect in a Particle Reinforced AA2017 Alloy

open access: yesMetals, 2018
The Portevin–Le Châtelier (PLC) effect often results in serrated plastic flow during tensile testing of aluminum alloys. Its magnitude and characteristics are often sensitive to a material’s heat treatment condition and to the applied strain rate and ...
Markus Härtel   +3 more
doaj   +1 more source

An Epigenetic Fate Converter Based on Nuclei‐Targeting Lipid Nanoparticles Drives Neuronal Programming of Stem Cells for Spinal Cord Repair

open access: yesAdvanced Functional Materials, EarlyView.
Schematic illustration of LNP‐MPG nuclei‐targeting delivery of HMW‐FGF2 promoting histone acetylation to regulate the fate of DPSCs and treat spinal cord injury. LNPs components include pHMW‐FGF2 plasmid, DSPC, Dlin‐MC3‐DMA, cholesterol, and PEG2000, and are modified with MPG to form HMW‐FGF2@LNP‐MPG (HLM). HLM nuclei‐targets DPSCs to deliver HMW‐FGF2,
Heng Zhou   +6 more
wiley   +1 more source

A novel sequential approach through structural enhancements for designing a new serrated helical heat exchanger

open access: yesCase Studies in Thermal Engineering
The current investigation examines the impact of three structural alterations on the thermal efficiency of the shell and helical tube heat exchanger. The helical tube heat exchanger modifications implemented in the initial model are changing the shell ...
Mohamed A. Hamied   +3 more
doaj   +1 more source

Peierls barrier characteristic and anomalous strain hardening provoked by dynamic-strain-aging strengthening in a body-centered-cubic high-entropy alloy

open access: yesMaterials Research Letters, 2019
The temperature effect on the mechanical behavior of the HfNbTaTiZr high entropy alloy (HEA) was investigated at 77–673 K. The decrease of the yield strength with increasing the temperature was mechanistically analyzed by considering contributions from ...
S. Y. Chen   +10 more
doaj   +1 more source

The influence of serrated flow on necking in tensile specimens

open access: yes, 2012
Three-dimensional finite element simulations are used to investigate the role of serrated flow on the strain at the onset of necking in a cylindrical uniaxial tension specimen. The material is idealized using a modified form of the McCormick constitutive
Curtin, W. A.   +5 more
core   +1 more source

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