Person

Michael Frederick Francis

This person is no longer with EPFL

Related publications (9)

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Mechanical stress combined with alloying as controlled by CO dissociation is investigated for the control of methanation activity. CO dissociation over strained Ni(211), Ni3Fe(211), and NiFe(112) is investigated. A continuous 0.62 eV range of CO reaction e ...

Amer Chemical Soc2017

Elastic Effects in Adsorbate-Adsorbate Interactions of C and S on a Stepped Ru Surface

William Curtin, Michael Frederick Francis

We examine strain modification of adsorbate adsorbate inter- action in the (C*+S*)/fcc-Ru(211) system for relevance to biomass to hydrocarbon catalysis and the broader case of interaction changes under strain. Applied biaxial strains from -3% to +3% shift ...

Amer Chemical Soc2017

Microalloying for the controllable delay of precipitate formation in metal alloys

William Curtin, Michael Frederick Francis

A model is presented to predict the effectiveness of dilute solutes in delaying precipitate formation, with application to natural and artificial aging in metal alloys. Control of aging is achieved via the binding, at natural aging temperatures, and releas ...

Elsevier2016

Magnesium interatomic potential for simulating plasticity and fracture phenomena

William Curtin, Michael Frederick Francis

Magnesium has multiple dislocation and twinning systems with starkly different properties, which make its plastic deformation strongly anisotropic and highly complex. Existing empirical interatomic potentials fail to capture the full scope of these propert ...

Institute of Physics2015

The effect of mechanical strain on the binding energy of adsorbates to late transition metals is believed to be entirely controlled by electronic factors, with tensile stress inducing stronger binding. Here we show, via computation, that mechanical strain ...

Nature Publishing Group2015

Hydrogen-vacancy complexes can form in a material due to the exothermic binding of hydrogen atoms to vacancy sites. We explore the structure and electronic properties of hydrogen-vacancy complexes in delta-Pu using a density functional theory supercell app ...

American Physical Society2014

Diffusion on Demand to Control Precipitation Aging: Application to Al-Mg-Si Alloys

William Curtin, Michael Frederick Francis

We demonstrate experimentally that a part-per-million addition of Sn solutes in Al-Mg-Si alloys can inhibit natural aging and enhance artificial aging. The mechanism controlling the aging is argued to be vacancy diffusion, with solutes trapping vacancies a ...

American Physical Society2014

Density functional theory calculations have been performed to provide details of the structural and charge-transfer details related to the solid solution of hydrogen in (delta)-plutonium. We follow the Flanagan model that outlines the process by which hydr ...

Iop Publishing Ltd2013

In this paper, a detailed density functional theory analysis of oxygen binding to Mg(0001) and subsequent clustering is presented. Oxygen monomer adsorption to Mg(0001) is demonstrated to be subsurface. It is shown that magnesium mediates an attractive oxy ...

Amer Physical Soc2013