STEM-EDXS can be used to investigate minerals and organic matter from different times and different places of our Solar System and therefore help us understand the history of materials of the Universe. Join us for this one-hour webinar, featuring our guest speaker, Dr. Rhonda Stroud, research physicist at the US Naval Research Laboratory.
The processes by which old stars die, and new solar systems with habitable planets emerge can be studied through direct laboratory analysis of extraterrestrial rocks and dust. These astromaterials studies are most powerful when conducted as comprehensive coordinated analyses involving electron microscopy, secondary ion mass spectroscopy, and complementary microanalysis methods. Scanning transmission electron microscopy (STEM) with energy dispersive x-ray spectroscopy (EDXS) is a critical part of these astromaterials studies. Through STEM-EDXS, we can identify single impurity atoms incorporated into individual nanodiamonds, examine the condensation and cooling history of nanoparticles from stars, and distinguish similar cometary, asteroidal, interstellar, and terrestrial synthetic materials. This talk will discuss example STEM-EDXS studies of minerals and organic matter from different times and places in the Universe that help us understand our Solar System as we see it today.
Individual heteroatom identification with X-ray spectroscopy R. M. Stroud et al., APL 108, 163101 (2016), open access
XFlash® 6T-100 oval detector page
Dr. Rhonda Stroud
Research Physicist, US Naval Research Laboratory
Dr. Meiken Falke
Global Product Manager EDS/TEM, Bruker Nano Analytics
Dr. Igor Nemeth
Application Scientist, Bruker Nano Analytics