Título: Electric Field Manipulation of Matter via Synchrotron Radiation
Ponente: Thomas Tsakalakos, Universidad de Rutgers
Fecha: Jueves, 18 octubre 2018
Hora: 11:30 h
Lugar: Salón de Grados del cicCartuja 2
Abstract:
Flash Sintering (FS), a relatively new method, densifies ceramic powders, in seconds, at very low temperatures. A non-equilibrium rise in current, under applied electric field, is used to densify matter. EDXRD Temperature Calibration utilizes white energy dispersive x-ray diffraction (EDXRD) from a synchrotron source to track the lattice expansion of the ceramic during FS. In this presentation, studies on the following materials will be discussed: ZnO, TiO2, CeO2 and BiFeO3 oxides and B4C , TiB2 ZrB2 and BN nonoxides. This In-Situ investigation analysis of mechanisms at the onset of FS, the cause of enhanced sintering kinetics during FS and applied temperatures for each theory will be presented. New ways of performing FS experiments on ZnO by ramping the current linearly and by AC power supply, microstructural inhomogeneity, grain growth, and other physical properties will be also shown. FS of BiFeO3 is a homogeneous process at exceptionally low temperatures (350 0C < Tc) will be described as well as the excellent dielectric properties that are discovered.
Biografía:
Director and Principal Investigator, Nano-Structured Materials Laboratory (Dept. of Materials Science and Engineering) Rutgers University
Ph.D.: MSE, Northwestern Univ., Evanston, Illinois: Thesis Advisor Prof. John Hilliard: “Interdiffusion & Enhanced Modulus Effect in Composition Modulated Copper-Nickel Thin Foils”: 1977
BS: Physics Dept, Univ. of Athens, Greece: 1972.
El pasado viernes 20 de mayo a las 12:00h el ganador y las tres accésits recogieron sus galardones.
La investigadora del ICMS es premiada por su labor docente, educativa e investigadora
El investigador del ICMS es galardonado con el Premio a la Trayectoria Científica de Excelencia FISOCAT 2022 Junior.
Se abre el plazo para la presentación de solicitudes hasta el 18 de mayo de 2022.
El investigador del ICMS, organiza junto con dos investigadores más, un Simposio dentro del XVI Congreso Nacional de Materiales
Xabier García Casas del Instituto de Ciencia de Materiales de Sevilla (ICMS) ha conseguido el primer premio.
El 11 de febrero nos volvemos a sumar a esta iniciativa para eliminar los estereotipos de género en STEM.