The Metamict State (Hoffmann, Roald)

Introduction to Roald Hoffmann on the Philosophy, Art, and Science of Chemistry

Roald Hoffmann has been widely recognized for his fundamental research in chemistry, as well as for his literary career as a poet, playwright, and essayist. But Hoffmann is also a philosopher of science who has made significant contributions to our conceptual, historical, and normative understanding of chemistry. This book collects many of Hoffmann's philosophical essays, which represent a sign...

Chemical Bonding across the Periodic Table at High and Ambient Pressures CNF Project Number : 1371 - 05 Principal Investigator : Roald Hoffmann Users

Figure 1: One-dimensional chain of WH6 stoichiometry, with a local tricapped trigonal prismatic arrangement around W atoms. The dashed lines indicate the frontiers of the unit cell [1]. Part of our research is devoted to the properties of hydrogen-rich materials, especially under high pressure. In this area, we have built on previous work at the Cornell NanoScale Facility to further our underst...

Gernot Hoffmann

Oxidation state of uranium in metamict and annealed zircon: near-infrared spectroscopic quantitative analysis

Radiation and thermally induced changes in the oxidation state of uranium in metamict zircon have been systematically analysed, for the first time, using polarized near-infrared spectroscopy. The results showed that in damaged zircon U ions in crystalline domains exhibited relatively sharp, anisotropic signals from tetravalent and pentavalent U ions in crystalline domains (U4+ crystal and U5+ c...

Commentary: Evolution of the Hoffmann Fixators

Why research Raoul Hoffmann and the evolution of external skeletal fixation? [1] As a young surgeon assigned to duty on the Hospital Ship Sanctuary during the Vietnam War, I was flown in and reported to the Commanding Officer. The Captain said my assignment was in Orthopedics. I replied ‘my main interest is in Neurosurgery.’ He said there were no neurosurgeons on the hospital ship so he could s...