Results 141 to 150 of about 2,468,981 (349)

Controllability results for fractional order neutral functional differential inclusions with infinite delay

open access: yes, 2017
In this paper, we investigate the controllability results for fractional order neutral functional differential inclusions with an infinite delay involving the Caputo derivative in Banach spaces.
Yong Zhou   +3 more
semanticscholar   +1 more source

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Femtosecond Single‐ and Double‐Pulse Fabrication of Periodic Nanostructures on Stainless Steel for Surface‐Enhanced Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic submicron features are fabricated on 304 stainless steel using single and double femtosecond laser pulses. By adjusting polarization, fluence, and inter‐pulse delay, 1D and 2D nanostructures are formed. Enhanced hydrophobicity and dense surface‐enhanced Raman spectroscopy hotspots enable analyte detection down to 10−10 M with good ...
Balaji Baskar   +3 more
wiley   +1 more source

Uniform Asymptotic Stability in Infinite Delay Systems

open access: yesJournal of Mathematical Analysis and Applications, 1993
AbstractLiapunov methods are used to give conditions ensuring that the zero solution of a system of functional differential equations with infinite delay is uniformly asymptotically stable. Several examples illustrate the application of these results, especially to integrodifferential equations.
openaire   +2 more sources

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach   +6 more
wiley   +1 more source

Initial value problems for nonlinear nonresonant delay differential equations with possibly infinite delay

open access: yesElectronic Journal of Differential Equations, 1997
We study initial value problems for scalar, nonlinear, delay differential equations with distributed, possibly infinite, delays. We consider the initial value problem $$cases{ x(t) = varphi(t), & $t leq 0$cr x'(t)+int_0^infty g(t, s, x(t), x(t-s)), d mu ...
Lance D. Drager, William Layton
doaj  

Evaluating Dielectric Properties for Semicrystalline Thermoplastics to Analyze the Thermal and Rheological Properties in Laser‐Based Powder Bed Fusion of Plastics

open access: yesAdvanced Engineering Materials, EarlyView.
This study aims to establish a link between the dielectric properties of polyamide 12 (PA12) and its thermal and rheological properties using dielectric analysis (DEA). A standardized methodology is introduced to determine melting and crystallization temperatures.
Benedikt Burchard   +2 more
wiley   +1 more source

The Emerging 4D Printing of Shape‐Memory Thermomorphs for Self‐Adaptative Biomedical Implants

open access: yesAdvanced Functional Materials, EarlyView.
4D printing enables the creation of smart implants that adapt to changing conditions in the human body over time. At the core of this technology are shape‐memory thermomorphs (SMTMs). This review offers an in‐depth analysis of 4D printing with SMTMs, emphasizing the latest advancements in smart materials, stimuli, programming principles, and their ...
Aixiang Ding, Fang Tang, Eben Alsberg
wiley   +1 more source

Dynamic Micromechanical Characterization of 3D Printed Bone In Vitro Models Manufactured via Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a novel approach to designing and fabricating high‐porosity 3D‐printed scaffolds using a customized resin. Scaffold geometry, cellular interactions, and mechanical properties are analyzed to demonstrate these engineered bone models.
Sera Choi   +6 more
wiley   +1 more source

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