Results 161 to 170 of about 47,668 (301)

Interface Effects in Ultrathin Silicon on Insulator Films

open access: yesAdvanced Functional Materials, EarlyView.
This work establishes a systematic framework to discriminate how bulk and interface phenomena affect charge transport in ultrathin P‐doped silicon‐on‐insulator (SOI) films. For Si films below 15 nm, electrical characterization demonstrates that interface states drive charge transport, shifting the metal‐insulator transition (MIT) critical dopant ...
Andrea Pulici   +8 more
wiley   +1 more source

Finite Element Analysis of Earth-retaining Structures Problems in Nonlinear Partially Saturated Soil

open access: yesJournal of Engineering and Sustainable Development, 2012
This paper presents the finite element method to analyze the problems of earth-retaining structures in nonlinear partially saturated soil. The finite element formulation of the incremental Biot’s theory (1941) of consolidation is presented.
Hassanein F. Hassan, Saif M. Jawad
doaj  

Mesoscale Domain Evolution Mechanism during Alternating Current (AC) Poling of Relaxor Ferroelectrics

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric domain variants that are energetically equivalent are expected to remain preserved during polarization reversal. However, phase‐field simulations reveal that inclined domain walls in relaxor ferroelectrics can undergo irreversible elimination during alternating current poling through a proximity effect driven by long‐range elastic ...
Yuan‐Jie Sun   +2 more
wiley   +1 more source

Smoothed particle hydrodynamics modelling for failure in metals [PDF]

open access: yes, 2010
It is generally regarded to be a difficult task to model multiple fractures leading to fragmentation in metals subjected to high strain rates using numerical methods.
Strand, Russell K
core  

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge   +4 more
wiley   +1 more source

eXtended finite element methods for thin plates

open access: yes, 2008
eXtended finite element methods for thin plates.
Lasry, Jérémie   +2 more
openaire   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

open access: yesAdvanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster   +11 more
wiley   +1 more source

Shape Memory Microneedle to Prevent Risks of Reproductive Hormone Therapy by Switching Sustained to Burst Release Under a Single Transdermal Insertion

open access: yesAdvanced Functional Materials, EarlyView.
A shape‐memory microneedle system enables reproductive hormone therapy through a single transdermal insertion. The X‐shaped device sustains follicle‐stimulating hormone release for three days, and mild heating restores the O shape to trigger burst human chorionic gonadotropin release.
Sungwoo Cho   +8 more
wiley   +1 more source

Bending Fatigue Crack Analysis of the Subway Gearbox Gear

open access: yesJixie chuandong, 2018
The crack propagation analysis of the gearbox gear of a urban rail vehicle is carried out by combining the dynamics simulation and the extended finite element method( XFEM).
Zhu Hekai, Yang Jianwei, Li Xin
doaj  

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