Results 111 to 120 of about 461,135 (297)

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Molecular Dynamics Simulations of Slip on Curved Surfaces

Oil & Gas Science and Technology, 2016
We present Molecular Dynamics (MD) simulations of liquid water confined within nanoscale geometries, including slit-like and cylindrical graphitic pores.
Ross D.A., Boek E.S.
doaj   +1 more source

Effective slippage on superhydrophobic trapezoidal grooves

, 2013
We study the effective slippage on superhydrophobic grooves with trapezoidal cross-sections of various geometries (including the limiting cases of triangles and rectangular stripes), by using two complementary approaches.
Asmolov, Evgeny S., Schmid, Friederike, Vinogradova, Olga I., Zhou, Jiajia   +3 more
core   +1 more source

Hydrodynamic interaction with super-hydrophobic surfaces [PDF]

, 2010
Patterned surfaces with large effective slip lengths, such as super-hydrophobic surfaces containing trapped gas bubbles, have the potential to reduce hydrodynamic drag.
Belyaev, Aleksey V., Vinogradova, Olga I.   +1 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

First-order analysis of slip flow for micro and nanoscale applications

Flow
An existing approach for deriving analytical expressions for slip-flow properties of Stokes flow is generalised and applied to a range of micro and nanoscale applications.
Duncan A. Lockerby
doaj   +1 more source

Interface conditions of roughness-induced superoleophilic and superoleophobic surfaces immersed in hexadecane and ethylene glycol

Beilstein Journal of Nanotechnology, 2017
Interface conditions are an important property that can affect the drag of fluid flow. For surfaces with different oleophobicity, the boundary slip at the solid–oil interface is mostly larger than that at the solid–water interface.
Yifan Li, Yunlu Pan, Xuezeng Zhao
doaj   +1 more source

Effective slip over superhydrophobic surfaces in thin channels

, 2008
Superhydrophobic surfaces reduce drag by combining hydrophobicity and roughness to trap gas bubbles in a micro- and nanoscopic texture. Recent work has focused on specific cases, such as striped grooves or arrays of pillars, with limited theoretical ...
A. A. Alexeyev, E. Lauga, François Feuillebois, K. Z. Markov, L. Bocquet, Martin Z. Bazant, Olga I. Vinogradova, S. Torquato   +7 more
core   +1 more source

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

Advanced 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, Manuel J. Carvajal Loaiza, Rahaf Homssi, Vanessa Restrepo   +3 more
wiley   +1 more source

A slip-based model for the size-dependent effective thermal conductivity of nanowires

, 2017
The heat flux across a nanowire is computed based on the Guyer-Krumhansl equation. Slip conditions with a slip length depending on both temperature and nanowire radius are introduced at the outer boundary. An explicit expression for the effective thermal
Ahmad, Alvarez, Alvarez, Alvarez, Buffat, Cahill, Callaway, Chang, Chen, Chinen, Cregan, Dong, F.X. Alvarez, Garnett, Ge, Guyer, Guyer, Holland, Jou, Lai, Li, Liu, M. Calvo-Schwarzwälder, M.G. Hennessy, Ma, Majumdar, McGaughey, Mingo, Ockendon, P. Torres, Salata, Segura, Sellito, Sellitto, Shin, Sun, T.G. Myers, Tolman, Torres, Torres, Tzou, Wang, Wang, Wronski, Xiong, Zhu   +45 more
core   +1 more source