E. Johnson
University of Copenhagen
29 Papers
193 Citations
E. Johnson is an academic researcher from University of Copenhagen. The author has contributed to research in topics: Spinodal decomposition & Dislocation. The author has an hindex of 10, co-authored 27 publications.
Chat about Author
Papers
Equilibrium shape and interface roughening of small liquid Pb inclusions in solid Al
TL;DR: In this paper, the shape of liquid Pb inclusions embedded in a solid Al matrix was investigated at temperatures between 300 and 500°C using in-situ electron microscopy, and the shape hysteresis between heating and cooling cycles was found to be due to the barrier of ledge nucleation necessary to advance the faceted interfaces.
97
Shapes and sizes of nanoscale Pb inclusions in Al
TL;DR: In this article, two types of deviations from the classical Wulff construction, which alter the shape of the inclusions, have been studied using high resolution TEM, and the smallest inclusions adopt a series of magic sizes that can be related to the occurrence of periodic minima in the residual strain energy.
53
Interfacial properties of immiscible Co–Cu alloys
Ivan Egry,Lorenz Ratke,Matthias Kolbe,Dominique Chatain,Stefano Curiotto,Livio Battezzati,E. Johnson,Nini Pryds +7 more
TL;DR: Using electromagnetic levitation under microgravity conditions, the interfacial properties of an Cu75Co25 alloy have been investigated in the liquid phase as discussed by the authors, which can be prepared and levitated in a configuration consisting of a liquid cobalt-rich core surrounded by a liquid copper-rich shell.
Computer simulation of Pb/Al interfaces
TL;DR: In this article, Monte Carlo simulation was used to model the structure of (111) and (100) Pb/Al interfaces as well as calculate their interfacial free energy, and Vibrational contributions to the free energy were accounted for within the framework of the local harmonic approximation, and configurational free energy was described based on a point approximation for the entropy of mixing.
28
X-ray studies of krypton, xenon and lead inclusions in aluminium single crystals☆
TL;DR: In this article, X-ray diffraction at various temperatures was performed on aluminium single crystals with either krypton, xenon or lead and it was shown that the noble gas inclusions formed after implantation are solid up to at least 541 K.
26