Results 51 to 60 of about 10,814,884 (348)

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Heat Transfer Enhancement for Rarefied Flow Within a Microchannel Featuring Obstructions

open access: yesRevue des Énergies Renouvelables
The present study investigates forced convection heat transfer of rarefied flow within a microchannel containing obstacles using the thermal lattice Boltzmann method using a double distribution function model and BGK approximation.
Siham Hammid   +3 more
doaj   +1 more source

Analytical solution of pressure driven gas flow and heat transfer in micro-Couette using the Burnett equations [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2018
In the current work, an incompressible thermal flow in a micro-Couette in the presence of a pressure gradient is investigated utilizing the analytical solution of the Burnett equations with first-order and second-order slip boundary conditions, for the ...
AhmadReza Rahmati, F. Najati
doaj   +1 more source

On the Link between the Langevin Equation and the Coagulation Kernels of Suspended Nanoparticles

open access: yesFractal and Fractional, 2022
The ability of the Langevin equation to predict coagulation kernels in the transition regime (ranging from ballistic to diffusive) is not commonly discussed in the literature, and previous numerical works are lacking a theoretical justification.
José Morán
doaj   +1 more source

Ferromagnetism of Molecular Beam Epitaxy‐grown Ultra‐thin Cr2Ge2Te6 Films Down to the Monolayer Limit on Si Substrates

open access: yesAdvanced Materials, EarlyView.
Uniform monolayer Cr2Ge2Te6 films are achieved on Si substrates by molecular beam epitaxy. Intrinsic ferromagnetism with perpendicular magnetic anisotropy is established in the films by anomalous Hall effect and superconducting quantum interference device measurements, albeit with strong magnetic fluctuations characteristic of its 2D nature.
Pengfei Ji   +15 more
wiley   +1 more source

DSMC Simulation and Experimental Validation of Shock Interaction in Hypersonic Low Density Flow

open access: yesThe Scientific World Journal, 2014
Direct simulation Monte Carlo (DSMC) of shock interaction in hypersonic low density flow is developed. Three collision molecular models, including hard sphere (HS), variable hard sphere (VHS), and variable soft sphere (VSS), are employed in the DSMC ...
Hong Xiao, Yuhe Shang, Di Wu
doaj   +1 more source

Knudsen, Ingar, [No Service Number] [PDF]

open access: yes, 2017
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.
Australian Red Cross Society, National Office
core  

CVD Grown Hybrid MoSe2–WSe2 Lateral/Vertical Heterostructures With Strong Interlayer Exciton Emission

open access: yesAdvanced Materials, EarlyView.
A scalable bottom‐up CVD methodology, based on liquid transition metal salt precursors, is presented for the controlled growth of two high‐quality MoSe2–WSe2 heterostructures (HSs): purely lateral (HS I) and hybrid lateral/vertical (HS II), by simply adjusting precursor concentration.
Md Tarik Hossain   +16 more
wiley   +1 more source

A Multicoefficient Slip-Corrected Reynolds Equation for Micro-Thin Film Gas Lubrication

open access: yesInternational Journal of Rotating Machinery, 2005
This work investigates and analyzes the performance of conventional slip models among various regimes of Knudsen number and developes a new multicoefficient slip-velocity model, by using Taguchi quality control techniques and numerical analysis.
Eddie Yin-Kwee Ng, Ningyu Liu
doaj   +2 more sources

Low-Speed DSMC Simulations of Hotwire Anemometers at High-Altitude Conditions

open access: yesFluids, 2021
Numerical simulations of hotwire anemometers in low-speed, high-altitude conditions have been carried out using the direct simulation Monte Carlo (DSMC) method.
Christopher A. Roseman, Brian M. Argrow
doaj   +1 more source

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