M
Michael Ortiz
Researcher at California Institute of Technology
Publications - 489
Citations - 34601
Michael Ortiz is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Finite element method & Dislocation. The author has an hindex of 87, co-authored 467 publications receiving 31582 citations. Previous affiliations of Michael Ortiz include Complutense University of Madrid & University of Seville.
Papers
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Journal ArticleDOI
Oscillatory Thermomechanical Instability of an Ultrathin Catalyst
Fehmi Cirak,Jaime Cisternas,Alberto M. Cuitiño,Gerhard Ertl,Philip Holmes,Ioannis G. Kevrekidis,Michael Ortiz,Harm Hinrich Rotermund,Michael Schunack,Janpeter Wolff +9 more
TL;DR: A chemothermomechanical instability is analyzed in this regime, in which catalytic reaction kinetics interact with heat transfer and mechanical buckling to create oscillations.
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Triangular composite finite elements
TL;DR: Composite triangles consisting of four three-node triangles originally proposed by Camacho and Ortiz are studied and it is shown that the original element does not satisfy the Babuska–Brezzi condition nor pass the patch test.
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Minimum principles for the trajectories of systems governed by rate problems
Sergio Conti,Michael Ortiz +1 more
TL;DR: In this paper, the authors present two examples of energy-dissipation functionals for which relaxations and optimal scalings can be rigorously derived and show that these relaxations rigorously characterize macroscopic properties of complex microstructural evolution by means of wellposed effective problems.
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A director-field model of DNA packaging in viral capsids
William S. Klug,Michael Ortiz +1 more
TL;DR: In this article, the authors formulated a continuum theory of DNA packaging based on a director field representation of the encapsidated DNA and showed that torsionless toroidal solenoids, consisting of planar coils contained within meridional planes and wrapped around a spool core, and fine mixtures of the solenoid and spool phase beat the inverse spool construction.
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Atomistic long-term simulation of heat and mass transport
TL;DR: In this paper, the authors formulate a non-equilibrium statistical thermodynamics for ensembles of atoms or molecules, where neither temperature nor atomic fractions are required to be uniform but instead are allowed to take different values from particle to particle.