نتایج جستجو برای: shear enhancement
تعداد نتایج: 198523 فیلتر نتایج به سال:
Microfluidic flow based multiplexed devices have gained significant promise in detecting biomarkers in complex biological samples. However, to fully exploit their use in bioanalysis, issues such as (i) low sensitivity and (ii) high levels of nonspecific adsorption of non-target species have to be overcome. Herein, we describe a new multiplexed device for the sensitive detection of multiple prot...
We develop a scaling model relating the friction forces between two polyelectrolyte brushes sliding over each other to the separation between grafted surfaces, number of monomers and charges per chain, grafting density of chains, and solvent quality. We demonstrate that the lateral force between brushes increases upon compression, but to a lesser extent than the normal force. The shear stress a...
Abstract. The relationship between momentum and energy transport is investigated with focus on understanding recent experimental observations, using global gyrokinetic simulations with proper coupling between turbulence and neoclassical dynamics. First, a large inward flux of toroidal momentum is found robustly in the post saturation phase of ion temperature gradient (ITG) turbulence. As a cons...
In this paper, we study the metastability for 2-D linearized dissipative quasi-geostrophic equation with small viscosity $\nu$ around quasi steady state $\theta_{sin}=e^{-\nu t}\sin y$. We proved linear enhanced dissipation and obtained rate. Moreover, new non-local enhancement phenomenon was discovered discussed. Precisely showed that term re-enhances diffusion effect by shear-diffusion mechan...
Ultrathin films containing a high fraction of cellulose nanowhiskers embedded in an acrylic-based polymer matrix were successfully prepared by a shear-convective assembly method. Their morphological, chemical and physical properties were examined by AFM Peak Force Tapping, Ellipsometry, contact angle and X-ray photoelectronic spectroscopy (XPS). Smooth, stable, robust and hydrophobic ultrathin ...
Tropical cyclone (TC) tornadoes produced by supercells occur in characteristic thermodynamic environments of rich low-level moisture, high precipitable water and commonly (but not always) enhancement to CAPE by diurnal, diabatic surface heating. These factors juxtapose with strong low-level shear magnitudes, high storm-relative helicity and enlarged hodographs to optimize supercellular to...
We investigated the shear banding phenomena in non-isothermal simple-shear flow of a viscoelastic-fluid-based nanofluid (VFBN) subject to exothermic reactions. The polymeric (viscoelastic) behavior VFBN was modeled via Giesekus constitutive equation, with appropriate adjustments incorporate both and nanoparticle effects. Nahme-type laws were employed describe temperature dependence viscosities ...
A multiscale meshfree particle method is developed, which includes recent advances in SPH and other meshfree research efforts. Key features will include linear consistency, stability, and both local and global conservation properties. In addition, through the incorporation of Reproducing Kernal Particle Method(RKPM), standard moving least squares (MLS) enhancement and wavelet techniques, the me...
Within a covariant parton cascade, we discuss the impact of both finite shear viscosity η and freeze-out dynamics on the elliptic flow generated at RHIC. We find that the enhancement of η/s in the cross-over region of the QGP phase transition cannot be neglected in order to extract the information from the QGP phase. We also point out that the elliptic flow v2(pT ) for a fluid at η/s ∼ 0.1− 0.2...
Abstract-Silicon, the main material of microelectronics, is perfectly suited for spin-driven applications. All-electrical spin injection in silicon has been demonstrated, however, the magnitude of the corresponding signal is larger than theoretically predicted. We analyze the influence of electrostatic charge screening on the efficiency of spin injection at the ferromagnet-semiconductor interfa...
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