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Crystallographic orientation effect on cutting-based single atomic layer removal

Wenkun XIE, Fengzhou FANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 631-644 doi: 10.1007/s11465-020-0599-x

Abstract: The mechanism of a single atomic layer removal in cutting is the key basic theoretical foundation forIn the present study, the crystallographic orientation effect on the cutting-based single atomic layerremoval of monocrystalline copper is investigated by molecular dynamics simulation.When undeformed chip thickness is in the atomic scale, two kinds of single atomic layer removal mechanismsexist in cutting-based single atomic layer removal, namely, dislocation motion and extrusion, due to

Keywords： ACSM     single atomic layer removal mechanism     crystallographic orientation effect     mechanical cutting     Manufacturing    

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Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

Frontiers in Energy doi: 10.1007/s11708-023-0907-3

Abstract: nanostructuring Pt particles and modifying/innovating supports in developing conventional Pt-based catalysts, Pt single-atomThe single-atomic Pt coordinating with non-metals and alloying with metals as well as the metal-supportinteractions of Pt single-atoms with carbon/non-carbon supports are emphasized in terms of the ORR activity

Keywords： oxygen reduction electrocatalysis     Pt single-atom catalysts     conventional Pt-based catalysts     design    

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Ionic strength directed self-assembled polyelectrolyte single-bilayer membrane for low-pressure nanofiltration

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 699-708 doi: 10.1007/s11705-021-2093-3

Abstract: Layer-by-layer assembly is a versatile technique for fabricating nanofiltration membranes, where multipleself-assembly procedure is described for the preparation of nanofiltration membranes consisting of only a singleinfluence of background ionic strength as well as membrane substrate properties on the formation of single-bilayer

Keywords： layer-by-layer self-assembly     single bilayer     nanofiltration membrane     desalination    

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Molecular dynamics investigation of mechanical properties of single-layer phagraphene

Ali Hossein Nezhad SHIRAZI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 495-503 doi: 10.1007/s11709-018-0492-4

Abstract: Phagraphene is a very attractive two-dimensional (2D) full carbon allotrope with very interesting mechanical, electronic, optical, and thermal properties. The objective of this study is to investigate the mechanical properties of this new graphene like 2D material. In this work, mechanical properties of phagraphene have been studied not only in the defect-free form, but also with the critical defect of line cracks, using the classical molecular dynamics simulations. Our study shows that the pristine phagraphene in zigzag direction experience a ductile behavior under uniaxial tensile loading and the nanosheet in this direction are less sensitive to temperature changes as compared to the armchair direction. We studied different crack lengths to explore the influence of defects on the mechanical properties of phagraphene. We also investigated the temperature effect on the mechanical properties of pristine and defective phagraphene. Our classical atomistic simulation results confirm that larger cracks can reduce the strength of the phagraphene. Moreover, it was shown the temperature has a considerable weakening effect on the tensile strength of phagraphene. The results of this study may be useful for the design of nano-devices using the phagraphene.

Keywords： phaqraphene     mechanical properties     crack propaqation     molecular dynamics     thermal effects    

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Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 371-382 doi: 10.1007/s11465-013-0279-1

Abstract:

The atomic lattice structure of perfect single-layer graphene that can actually be regarded as a kindhierarchical fractal structure and sets were unveiled upon examination of the regular crystal lattices of the single-layer

Keywords： hierarchical fractal structure     fractal dimension     the fifth space-filling curve     multi-fractal structure    

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Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Frontiers of Chemical Science and Engineering   Pages 1672-1680 doi: 10.1007/s11705-022-2205-8

Abstract: Droplet impacting on the stainless steel wire mesh is very common in chemical devices, like a rotating packed bed. Surface wettability of wire mesh significantly affects the liquid flow pattern and liquid dispersion performance. However, the effect of surface wettability on the impaction phenomena at microscale such as liquid film is still unknown. In this work, the dynamic behavior of liquid film on the surface of wire mesh was analyzed by computational fluid dynamics simulation. The dynamic behavior of liquid film on the surface of wire mesh can be divided into the following three steps: (1) spreading step; (2) shrinkage process; (3) stabilizing or disappearing step. Effects of surface wettability, as well as operating conditions, on wetting area and liquid film thickness were studied. Compared to the hydrophilic wire mesh, the final wetting area of hydrophobic wire mesh is zero in most cases. The average liquid film thickness on the surface of hydrophilic wire mesh is 30.02–77.29 μm, and that of hydrophobic wire mesh is 41.76–237.37 μm. This work provided a basic understanding of liquid film flow at microscale on the surface with various surface wettabilities, which can be guiding the packing optimization and design.

Keywords： stainless steel wire mesh     computational fluid dynamics     surface wettability     liquid film     impacting    

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Fabrication and mechanical properties of single-wall carbon nanotubes and hyperbranched diazonium salt

LI Xinyang, FAN Pengwei, TUO Xinlin, WANG Xiaogong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 286-290 doi: 10.1007/s11705-008-0058-4

Abstract: Acidized single-wall carbon nanotubes (SWNTs) were fabricated into multilayers with a hyperbranched azobenzene-containingpolymeric diazonium salt (PDAS) using the layer-by-layer adsorption technique.interaction between SWNTs and PDAS were monitored by UV-Vis absorption spectroscopy, optical ellipsometry, Atomic

Keywords： PDAS     layer-by-layer     interaction     cooperation     single-wall    

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Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 383-395 doi: 10.1007/s11709-010-0074-6

Abstract: The single-layer cable net supported glass curtain wall has been applied in many building structuresTo study the influence of such damages on the static behavior of the single-layer cable net supportedThe stiffness contribution of glass panels to the single-layer cable net supported glass curtain wall

Keywords： single-layer plane cable net supported glass curtain wall     damage     cable prestress loss     cable anchorage    

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Thermal performance of a single-layer packed metal pebble-bed exposed to high energy fluxes

Shengchun ZHANG, Zhifeng WANG, Hui BIAN, Pingrui HUANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 513-528 doi: 10.1007/s11708-019-0638-7

Abstract: The numerical models of a single sphere and multiple spheres are verified by the experiments.

Keywords： packed bed     solar thermal power plants     high heat fluxes     radiative heat transfer    

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Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1772-1781 doi: 10.1007/s11705-022-2197-4

Abstract: conversion but also readily trapped in water splitting, which is still challenging for developing efficient single-atomHerein, a proton deployment strategy is demonstrated via “atomic and nanostructured iron (A/N-Fe) pairs

Keywords： CO2 electrolysis     single-atom catalysts     spin polarization     proton dynamics     in situ   

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Operation analysis of a Chebyshev-Pantograph leg mechanism for a single DOF biped robot

Conghui LIANG, Marco CECCARELLI, Yukio TAKEDA

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 357-370 doi: 10.1007/s11465-012-0340-5

Abstract:

In this paper, operation analysis of a Chebyshev-Pantograph leg mechanism is presented for a singleThe proposed leg mechanism is composed of a Chebyshev four-bar linkage and a pantograph mechanism.In contrast to general fully actuated anthropomorphic leg mechanisms, the proposed leg mechanism hasKinematic equations of the proposed leg mechanism are formulated for a computer oriented simulation.A prototype of a single DOF biped robot equipped with two proposed leg mechanisms has been built at LARM

Keywords： biped robots     leg mechanisms     simulation    

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Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0695-1

Abstract: This study presents a family of novel translational parallel mechanisms (TPMs) with single-loop topologicalThe proposed mechanism consists of only revolute and prismatic joints.workspace of the 3-CRR (C denotes the cylindrical joint and R denotes the revolute joint) translational mechanism

Keywords： translational parallel mechanism     single loop     multiple driving system     workspace analysis     singularity    

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Applications of atomic force microscopy in immunology

Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang

Frontiers of Medicine 2021, Volume 15, Issue 1,   Pages 43-52 doi: 10.1007/s11684-020-0769-6

Abstract: The principle of atomic force microscopy (AFM) and its three running modes are introduced for the mechanical

Keywords： cellular mechanics     atomic force microscopy     neutrophil extracellular trap     macrophage phagocytosis     pore    

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New insights into mercury removal mechanism on CeO

Ling Li, Yu He, Xia Lu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-018-1007-1

Abstract: First-principles calculations were performed to investigate the mechanism of Hg adsorption and oxidationdesorption and maintenance of sufficient active surface oxygen were the rate-determining steps of Hg removalWe believe that our thorough understanding and new insights into the mechanism of the Hg removal processwill help provide guidelines for developing novel CeO -based catalysts and enhance the Hg removal efficiency

Keywords： Elemental mercury removal     Surface adsorption     Ceria     First-principles calculations    

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Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 33-38 doi: 10.1007/s11783-007-0006-4

Abstract: China, nitrogen and phosphorous have been the concern of wastewater treatment, especially nitrogen removalThe stabilization of the intelligent control system and nitrogen removal efficiency were investigatedthe intelligent control system not only could save energy, but also could achieve advanced nitrogen removal

Keywords： eutrophication     pilot-scale aerobic-anoxic     stabilization     oxidation reduction     nitrification    

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Title Author Date Type Operation

Crystallographic orientation effect on cutting-based single atomic layer removal

Wenkun XIE, Fengzhou FANG

Journal Article

Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

Journal Article

Ionic strength directed self-assembled polyelectrolyte single-bilayer membrane for low-pressure nanofiltration

Journal Article

Molecular dynamics investigation of mechanical properties of single-layer phagraphene

Ali Hossein Nezhad SHIRAZI

Journal Article

Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Journal Article

Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Journal Article

Fabrication and mechanical properties of single-wall carbon nanotubes and hyperbranched diazonium salt

LI Xinyang, FAN Pengwei, TUO Xinlin, WANG Xiaogong

Journal Article

Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Journal Article

Thermal performance of a single-layer packed metal pebble-bed exposed to high energy fluxes

Shengchun ZHANG, Zhifeng WANG, Hui BIAN, Pingrui HUANG

Journal Article

Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective

Journal Article

Operation analysis of a Chebyshev-Pantograph leg mechanism for a single DOF biped robot

Conghui LIANG, Marco CECCARELLI, Yukio TAKEDA

Journal Article

Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures

Journal Article

Applications of atomic force microscopy in immunology

Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang

Journal Article

New insights into mercury removal mechanism on CeO

Ling Li, Yu He, Xia Lu

Journal Article

Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Journal Article