Results 91 to 100 of about 230,861 (348)

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Estimation of Effective Thermal Conductivity of Two-Phase Material for Hollow Circular Model

open access: yesMATEC Web of Conferences, 2018
Two-phase materials are commonly used in engineering application because of its various properties like strength, thermal conductivity, durability and toughness etc.
Kumar Sahu Prateek   +2 more
doaj   +1 more source

Apollo water impact Status report, 1 Apr. - 1 Oct. 1969 [PDF]

open access: yes
Hydrodynamic impact simulated by impacting rigid, right circular cylinder on smooth water surface, and computer ...
Kettleborough, C. F.
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Analytical solutions with Generalized Impedance Boundary Conditions (GIBC) [PDF]

open access: yes
Rigorous uniform geometrical theory of diffraction (UTD) diffraction coefficients are presented for a coated convex cylinder simulated with generalized impedance boundary conditions.
Syed, H. H., Volakis, John L.
core   +1 more source

Simulation of rotating drum experiments using non-circular particles

open access: yes, 1995
We investigate the flow of granular material in a rotating cylinder numerically using molecular dynamics in two dimensions. The particles are described by a new model which allows to simulate geometrically complicated shaped grains.
Allen   +31 more
core   +2 more sources

Fluid flow behavior around a circular cylinder perpendicular arrangement of circular cylinders.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1990
Fluid flow behavior around a circular cylinder placed downstream of and perpendicular to a single row of cylinders in a uniform flow was investigated varying the distance (L) between upstream and downstream cylinders. Flow visualization techniques (oil-film and smoke-wire methods) and a near-surface flow direction judgement (flow direction probe method)
Ikuo MABUCHI   +3 more
openaire   +2 more sources

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

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