Results 11 to 20 of about 28,558 (248)

Transient shear banding in the nematic dumbbell model of liquid crystalline polymers [PDF]

open access: yes, 2018
In the shear flow of liquid crystalline polymers (LCPs) the nematic director orientation can align with the flow direction for some materials, but continuously tumble in others.
Adams, James M, Corbett, Daniel
core   +2 more sources

A lattice spring model of heterogeneous materials with plasticity [PDF]

open access: yes, 2002
A three-dimensional lattice spring model of a heterogeneous material is presented. For small deformations, the model is shown to recover the governing equations for an isotropic elastic medium.
Buxton, G. A.   +2 more
core   +1 more source

Quantum Reflection as a New Signature of Quantum Vacuum Nonlinearity [PDF]

open access: yes, 2013
We show that photons subject to a spatially inhomogeneous electromagnetic field can experience quantum reflection. Based on this observation, we propose quantum reflection as a novel means to probe the nonlinearity of the quantum vacuum in the presence ...
Gies, Holger   +2 more
core   +3 more sources

Effects of the finite particle size in turbulent wall-bounded flows of dense suspensions

open access: yes, 2018
We use interface-resolved simulations to study finite-size effects in turbulent channel flow of neutrally-buoyant spheres. Two cases with particle sizes differing by a factor of 2, at the same solid volume fraction of 20% and bulk Reynolds number are ...
Brandt, Luca   +3 more
core   +1 more source

Molecular Mechanics of Liquid and Gas Slip Flow

open access: yesAnnual Review of Fluid Mechanics
By taking into account the inhomogeneity introduced by the presence of a solid boundary, slip-flow theory extends the range of applicability of the venerable Navier–Stokes description to smaller scales and into the regime where confinement starts to be ...
N. Hadjiconstantinou
semanticscholar   +1 more source

Fundamental Aspects of the ISM Fractality [PDF]

open access: yes, 1996
The ubiquitous clumpy state of the ISM raises a fundamental and open problem of physics, which is the correct statistical treatment of systems dominated by long range interactions.
CF Weizsäcker von   +12 more
core   +4 more sources

Inhomogeneous Big Bang Nucleosynthesis and Mutual Ion Diffusion

open access: yes, 2002
We present a study of inhomogeneous big bang nucleosynthesis with emphasis on transport phenomena. We combine a hydrodynamic treatment to a nuclear reaction network and compute the light element abundances for a range of inhomogeneity parameters. We find
C. Alcock   +33 more
core   +1 more source

Actively stressed marginal networks [PDF]

open access: yes, 2012
We study the effects of motor-generated stresses in disordered three dimensional fiber networks using a combination of a mean-field, effective medium theory, scaling analysis and a computational model.
C. P. Broedersz   +4 more
core   +3 more sources

Correlation regimes in fluctuations of fatigue crack growth [PDF]

open access: yes, 2005
This paper investigates correlation properties of fluctuations in fatigue crack growth of polycrystalline materials, such as ductile alloys, that are commonly encountered in structures and machinery components of complex electromechanical systems.
Anderson   +44 more
core   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam   +6 more
wiley   +1 more source

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