A theoretical model extended from the Frenkel-Eyring molecular kinetic theory(MKT)was applied to describe the boundary slip on textured *** concept of the equivalent depth of potential well was adopted to characterize...
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A theoretical model extended from the Frenkel-Eyring molecular kinetic theory(MKT)was applied to describe the boundary slip on textured *** concept of the equivalent depth of potential well was adopted to characterize the solid-liquid interactions on the textured *** slip behaviors on both chemically and topographically textured surfaces were investigated using molecular dynamics(MD)*** extended MKT slip model is validated by our MD simulations under various situations,by constructing different complex surfaces and varying the surface wettability as well as the shear stress exerted on the *** slip model can provide more comprehensive understanding of the liquid flow on atomic scale by considering the influence of the solid-liquid interactions and the applied shear stress on the ***,the slip velocity shear-rate dependence can be predicted using this slip model,since the nonlinear increase of the slip velocity under high shear stress can be approximated by a hyperbolic sine function.
This paper presents a self-triggered MPC controller design strategy for constrained linear systems. Based on the socalled relaxed dynamic programming inequality, the synthesis procedure allows us to determine both the...
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This paper presents a self-triggered MPC controller design strategy for constrained linear systems. Based on the socalled relaxed dynamic programming inequality, the synthesis procedure allows us to determine both the updated MPC control action and the next triggering time. The resulting self-triggered MPC control law preserves stability and constraint satisfaction and also satisfy certain a priori chosen performance requirements. An illustrative example shows the effectiveness of this selftriggered MPC implementation.
Colloidal crystal structures with complexity and diversity rivaling atomic and molecular crystals have been predicted and obtained for hard particles by entropy maximization. However, thus far homochiral colloidal cry...
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Colloidal crystal structures with complexity and diversity rivaling atomic and molecular crystals have been predicted and obtained for hard particles by entropy maximization. However, thus far homochiral colloidal crystals, which are candidates for photonic metamaterials, are absent. Using Monte Carlo simulations we show that chiral polyhedra exhibiting weak directional entropic forces self-assemble either an achiral crystal or a chiral crystal with limited control over the crystal handedness. Building blocks with stronger faceting exhibit higher selectivity and assemble a chiral crystal with handedness uniquely determined by the particle chirality. Tuning the strength of directional entropic forces by means of particle rounding or the use of depletants allows for reconfiguration between achiral and homochiral crystals. We rationalize our findings by quantifying the chirality strength of each particle, both from particle geometry and potential of mean force and torque diagrams.
Dieser Aufsatz beschreibt den aktuellen Forschungsstand auf dem Gebiet der tragbaren Elektronik (“smarte” Textilien). Wir diskutieren die hauptsächlichen Anwendungsformen smarter elektronischer Textilien zur Er...
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Dieser Aufsatz beschreibt den aktuellen Forschungsstand auf dem Gebiet der tragbaren Elektronik (“smarte” Textilien). Wir diskutieren die hauptsächlichen Anwendungsformen smarter elektronischer Textilien zur Erzeugung, Speicherung und Nutzung von Elektrizität mit dem Fokus auf funktionellen Materialien. Ein weiterer wichtiger Aspekt ist die Integration dieser Einzelfunktionen. Verbleibende Herausforderungen werden aufgezeigt und Hinweise für zukünftige Entwicklungsrichtungen gegeben.
Air pollution contributes to the premature deaths of millions of people each year around the world, and air quality problems are growing in many developing nations. While past policy efforts have succeeded in reducing...
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Polymer aerogels have been attractive materials for applications in chemical sensors, thermal insulations, chemical adsorbents, catalysts or catalytic carriers, and space explorations since they were invented in the *...
Polymer aerogels have been attractive materials for applications in chemical sensors, thermal insulations, chemical adsorbents, catalysts or catalytic carriers, and space explorations since they were invented in the ***, the flammability of polymer matrices limits their potential applications in some significant ***, the polymer aerogel materials require modifications to decrease their flammability through the addition of flame-retardant compounds.
Carbon aerogels (Cas) with continuous porosity, high surface area and excellent electrical conductivity are promising for developing catalyst supports, adsorbent and electrode ***, a new type of Fe2O3 nanoparticles on...
Carbon aerogels (Cas) with continuous porosity, high surface area and excellent electrical conductivity are promising for developing catalyst supports, adsorbent and electrode ***, a new type of Fe2O3 nanoparticles on KOH actived graphene/polyimide-based carbon aerogel (Fe2O3/G-PI based CA) hybrids have been facilely synthesized via the synthesis of water soluble polyimide precursor, poly(amic acid) (PAA), the mixture of graphene oxide (GO), PAA and KOH,sol-gel, freeze-drying, imidization, high-temperature carbonization and one-step solvothermal reaction.
The lack of clean and safe drinking water is responsible for more deaths than war, terrorism and weapons of mass destruction combined. This suggests contaminated water poses a significant threat to human health and we...
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