Results 31 to 40 of about 3,958 (262)
Resolving the Structural Duality of Graphene Grain Boundaries
Advanced Materials, EarlyView.Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo +11 more
wiley +1 more source
Study on the Model of Slider-crank Mechanism with Clearance based on Parameter Identification Method
Jixie chuandong, 2017 In order to solve the problem of the clearance on the slider-crank mechanism and improve the position precision of the slider-crank mechanism. Starting from the simple mechanism of slider-crank mechanism,the simplified model is established.
Zeng Qingsheng +2 more
doaj
Kinetics Modeling for Slider-Crank Mechanism [PDF]
Proceedings of the Third International Conference on Control, Automation and Systems Engineering, 2013 This paper proposes a procedure to extract the kinetic model from the geometric model of a fixture to reduce the modeling time and effort. Since most of the fixtures in industry follow the same kinetic mechanism, the so-called a slider-crank mechanism; this is a four-axis system of three revolute and one prismatic joint. The prismatic axis of a fixture
Choi Jung J. +3 more
openaire +1 more source
A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments
Advanced 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
Dynamic synthesis of machine with slider-crank mechanism [PDF]
Mechanical Sciences, 2015 In this paper we consider the formulation and solution of the task of a dynamic synthesis machine with an asynchronous electric motor and a slider-crank mechanism.
A. A. Jomartov +2 more
doaj +1 more source
Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD
Advanced Materials, EarlyView.Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo +6 more
wiley +1 more source
Jixie chuandong, 2013 A planar three DOF hybrid mechanism is proposed based on the traditional planar three-limb parallel mechanism. The rotatablility of the hybrid mechanism is investigated by the crank condition.
何水琴, 李瑞琴
doaj
Advanced Materials, EarlyView.The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha +10 more
wiley +1 more source
Jixie chuandong, 2014 The analysis of the double crank-slider crank mechanism with quick-return characteristic is carried out,the relationship between the quick-return characteristic K and the installation angleφis deduced,the specific method of installation angle adjustment ...
熊显文, 程伟林
doaj
KINEMATIC CONNECTIONS IN THE MECHANISM OF THE CRANK-RING
, 2022 This article is devoted to the analysis of kinematic parameters of the crank-connecting rod mechanism for improving the working process of the internal combustion engine, reducing the inertia force of the piston at the upper and lower edge points. The analysis of kinematic indicators makes it possible to scientifically approach measures to improve the ...
Baxriddin Yaxshboyevich Begmatov +1 more
openaire +1 more source