Auflistung Nach Schlagwort "Mass transfer"
Anzeige der Dokumente 1-12 von 12
-
2D nitrogen-doped hierarchically porous carbon: Key role of low dimensional structure in favoring electrocatalysis and mass transfer for oxygen reduction reaction
(2017)An ultrathin (thickness 1.0 nm) 2D nitrogen-doped hierarchically porous carbon (2DNHPC) film is developed by the nanocasting method; for comparison, a 3D nitrogen-doped ordered mesoporous carbon (3DNOMC) is also synthesized. ... -
Computational investigation and parametrization of the pumping effect in temperature-driven flows through long tapered channels
(2017)The temperature-driven rarefied gas flow and the associated pumping effects through long channels with linearly diverging or converging cross sections are computationally investigated. The implemented kinetic modeling is ... -
Design guidelines for thermally driven micropumps of different architectures based on target applications via kinetic modeling and simulations
(2019)The manufacturing process and architecture of three Knudsen type micropumps are discussed and the associated flow performance characteristics are investigated. The proposed fabrication process, based on the deposition of ... -
The effect of shape and orientation on the barrier properties of flake-filled composites: A 3D approach
(2019)We carry out fully three-dimensional (3D) simulations in flake-filled composites with the objective of determining the effect of flake shape and orientation on their barrier properties. Our simulations are carried out in ... -
Enhanced hydrogen evolution activity over microwave-assisted functionalized 3D structured graphene anchoring FeP nanoparticles
(2019)Exploring low-cost and high-performance electrocatalysts for hydrogen evolution reaction (HER) still remains a challenging issue. An efficient strategy to enhance HER activity concerns with designing suitable substrates ... -
A general scaling for the barrier factor of composites containing thin layered flakes of rectangular, circular and hexagonal shape
(2020)We propose a general scaling which allows for the results of 3D mass transfer computations in layered flake composites containing square, circular or hexagonal flakes to collapse on a single master curve. We show that the ... -
Measurements of the stabilisation of liquid film flow by the soluble surfactant sodium dodecyl sulfate (SDS)
(2016)Gravity-driven film flow of aqueous solutions of SDS is studied experimentally and the evolution of small-amplitude, regular inlet disturbances is investigated. With the addition of SDS, strong attenuation of non-linear ... -
A novel NiFe@NC-functionalized N-doped carbon microtubule network derived from biomass as a highly efficient 3D free-standing cathode for Li-CO2 batteries
(2019)Rechargeable Li-CO2 batteries, which utilize CO2 into electrochemical energy storage systems, provide a promising strategy for alleviating the greenhouse effect and developing high energy density second batteries. However, ... -
A novel sulfur-nitrogen dual doped ordered mesoporous carbon electrocatalyst for efficient oxygen reduction reaction
(2016)Despite nitrogen doped carbon (NC) materials as metal-free electrocatalysts for oxygen reduction reaction (ORR) have shown desirable performance, the state-of-the-art of NC materials is still far from satisfaction for ... -
A review on ergonomics of headgear: Thermal effects
(2015)The thermal effects related to wearing headgear are complex and different studies have investigated single parts of this topic. This review aims at summarizing the different findings to give a complete overview on this ... -
Stability of liquid film flow laden with the soluble surfactant sodium dodecyl sulphate: Predictions versus experimental data
(2020)Gravity-driven liquid film flows laden with a soluble surfactant are considered, and aqueous solutions of sodium dodecyl sulphate (SDS) are taken as a case-study. Literature measurements of the critical Reynolds number for ... -
Thermally driven pumps and diodes in multistage assemblies consisting of microchannels with converging, diverging and uniform rectangular cross sections
(2020)Thermal transpiration pumping in multistage assemblies is computationally investigated. Each stage is formed by combining in series-long microchannels with (a) uniform–uniform (“uni–uni”), (b) converging–uniform (“con–uni”), ...