Results 101 to 110 of about 1,879,284 (292)

A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline   +2 more
wiley   +1 more source

Diffusion and Transport Coefficients in Synthetic Opals

open access: yes, 1999
Opals are structures composed of the closed packing of spheres in the size range of nano-to-micro meter. They are sintered to create small necks at the points of contact. We have solved the diffusion problem in such structures.
A. A. Zakhidov   +22 more
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

Non-Linear Signal Analysis Applied to Surface Wear Condition Monitoring in Reciprocating Sliding Testing Machines

open access: yesShock and Vibration, 2006
When the surfaces of two elastic bodies present relative motions under certain amount of contact pressure the mechanical system can be unstable. Experiments conducted on elastic bodies in contact shown that the dynamic system is self-excited by the non ...
Francisco Paulo Lépore Neto   +2 more
doaj   +1 more source

Equation of state and contact of a strongly interacting Bose gas in the normal state

open access: yes, 2015
We theoretically investigate the equation of state and Tan's contact of a non-degenerate three dimensional Bose gas near a broad Feshbach resonance, within the framework of large-$N$ expansion.
He, Lianyi   +3 more
core   +2 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Research on meshing performance of high-order segmented topology modification in face gear pair

open access: yesJixie qiangdu
ObjectiveIn order to enhance the load-bearing performance of face gear transmission and reduce its sensitivity to installation misalignment, a high-order segmented topological modification based on a predefined contact path was proposed.MethodsFirstly ...
He Qinyi   +6 more
doaj   +2 more sources

Analysis and Research on Transient Elasto hydrodynamic Lubrication of Gear Transmission

open access: yesJixie chuandong, 1997
By considering the compressibility of lubricants,the influence of contact ratio on the loads of gear teeth,and the effects of variable curvature of tooth profile and sliding velocities,a group of equations of transient elasto hydrodynamic lubrication and
卢立新, 付群峰, 蔡莹, 张和豪
doaj  

Path integral Monte Carlo simulations of nanowires and quantum point contacts

open access: yesJournal of Physics: Conference Series, 2006
We study quantum wires and point contacts with a fixed-node path integral Monte Carlo technique. The fixed-node technique uses a variational principle to map fermionic problems into effective bosonic problems, which are then evaluated with standard quantum Monte Carlo techniques.
J Shumway, M J Gilbert
openaire   +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

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