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Yasmin Ahmed Salem
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Scientific Events

Scientific Events

Month:

Opening Symposium for Advanced S/TEM and APT Facilities

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Opening Symposium for Advanced S/TEM and APT Facilities

The Max-Planck-Institut für Eisenforschung GmbH (MPIE) is happy to announce the opening symposium for advanced S/TEM and APT facilities, scheduled on 5th - 6th November 2018. We are pleased to celebrate this inauguration by a stimulating scientific colloquium with renowned experts and friends from all over the world. Topics of the symposium will include:• Development of advanced APT and (S)TEM techniques• New horizons in correlative (S)TEM and APT• Application to catalysis and energy materials• Interface science. We look forward to greeting you in Düsseldorf! [more]

MPIE Workshop: Mechanisms of White Etching Matter Formation

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MPIE Workshop: Mechanisms of White Etching Matter Formation

The Max-Planck-Insititut für Eisenforschung in Düsseldorf cordially invites academic and industrial researchers to the workshop on WEM formation, taking place on October 23nd 2018. This workshop will focus on the fundamental materials scientific processes behind this phenomenon. For this we have invited a number of speakers from complementary fields that are crucial for understanding the phenomenon. Topics will range from WEM formation mechanisms in bearings and rails, over WEM generation by heat, surface machining and high pressure torsion, and the role of hydrogen and electric current, to the remarkable resistance of high nitrogen steels to WEC failure. Participants must register till September 30th. The event is financed by the BMBF through grant 03SF0535 and is free of charge. [more]

Atomic Electron Tomography Using Coherent and Incoherent Imaging in (Scanning) Transmission Electron Microscopy

Metal and Alloy Nanoparticles from Ultrafast, Scalable, Continuous Synthesis and their Downstream Integration in Catalysis and Additive Manufacturing

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Metal and Alloy Nanoparticles from Ultrafast, Scalable, Continuous Synthesis and their Downstream Integration in Catalysis and Additive Manufacturing

[more]

Symposium "Experiments and Simulations Towards Understanding Tribology Across Length-Scales" at the MSE (Materials Science Engineering)

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Symposium "Experiments and Simulations Towards Understanding Tribology Across Length-Scales" at the MSE (Materials Science Engineering)

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Exploring Surface Interactions at the Molecular Scale in Tribological Applications Exploring Surface Interactions at the Molecular Scale in Tribological Applications

In this talk the contribution of molecular simulations and in particular non-equilibrium molecular dynamics (NEMD) modelling techniques providing unique insights into the nanoscale behaviour of lubricants is discussed. NEMD has progressed from a tool to corroborate theories of the liquid state to an instrument that can directly evaluate important fluid properties, and is now moving towards a potential design tool in tribology. The key methodological advances which have allowed this evolution will be highlighted. This will be followed by a summary of bulk and confined NEMD simulations of liquid lubricants and lubricant additives, as they have progressed from simple atomic fluids to ever more complex, realistic molecules. Confined NEMD simulations have revolutionised our fundamental understanding of the behaviour of very thin lubricant films between solid surfaces. This includes the density and viscosity inhomogeneities in confined films, as well as important tribological phenomena such as stick-slip and boundary slip. It is also being increasingly employed to study shear localisation behaviour in thicker films subjected to high pressures.The inclusion of chemical reactivity for additives and their adsorption to metal surfaces and oxides will be also discussed with examples given of how Density Functional Theory (DFT) calculations can be used to provide further insight when the focus is on the physics and chemistry that governs film formation. Coupling between molecular and continuum simulation methods for large systems will also be briefly discussed. [more]

Topological Optimization and Textile Manufacturing of 3D Lattice Materials

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Topological Optimization and Textile Manufacturing of 3D Lattice Materials

Recent advances in topological optimization methodologies for design of internal material architecture, coupled with the emergence of micro- and nanoscale fabrication processes, 3D imaging, and micron scale testing methodologies, now make it possible to design, fabricate, and characterize lattice materials with unprecedented control. This talk will describe a collaborative effort that employs scalable 3D textile manufacturing, location specific joining, and vapor phase alloying to produce metallic lattices with a wide range of internal architectures, alloy compositions, and mechanical and functional properties. The project involves three length scales. The highest level (component scale) spans centimeters to meters and encompasses gradients in unit cell architecture, porosity, and the creation of sandwich structures. The second level (architectural unit cells) spans tens of microns to millimeters and employs architectural optimization to design the geometry of the braided/woven structure. The smallest level (microstructure) spans nanometers to tens of microns focuses on vapor phase alloying of the wires after textile manufacturing. Topology optimization allows properties to be decoupled and tailored for specific applications. Dramatic enhancements in permeability have been balanced with modest reductions in stiffness and are being used to develop heat exchanger materials with high thermal transport, low impedance, low thermal gradients and high temperature strength. In a parallel effort, architectural designs to maximize both structural resonance and inter-wire friction are also being employed to develop metallic lattices capable of mechanical damping at elevated temperatures. These examples will be used to highlight the benefits to be gained by development of metallic lattice materials with a wide range of tailorable properties. [more]

 
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