Materials science matchmaker
September 25, 2014 — Scientific research may be the primary focus of the Department of Energy’s national laboratories, but for David Mandrus, the institutions play an equally important role in shaping the instruction and career paths of students.
September 16, 2014 — When Orlando Rios first started analyzing samples of carbon fibers made from a woody plant polymer known as lignin, he noticed something unusual. The material’s microstructure -- a mixture of perfectly spherical nanoscale crystallites distributed within a fibrous matrix -- looked almost too good to be true.
A Metallic Alloy That is Tough and Ductile at Cryogenic Temperatures
September 09, 2014 — A new concept in metallic alloy design – called “high‐entropy alloys” - has yielded a multiple-element material that not only tests out as one of the toughest on record, but, unlike most materials, the toughness as well as the strength and ductility of this alloy actually improves at cryogenic temperatures.
Materials Scientists Play Atomic ‘Jenga’ and Make a Surprising Discovery
August 28, 2014 — Researchers at the Department of Energy’s Oak Ridge National Laboratory got a surprise when they built a highly ordered lattice by layering thin films containing lanthanum, strontium, oxygen and iron. Although each layer had an intrinsically nonpolar (symmetric) distribution of electrical charges, the lattice had an asymmetric distribution of charges.
Scientists learn to control reactions with the shape of a rare-earth catalyst
August 27, 2014 — Scientists at the Department of Energy’s Oak Ridge National Laboratory have discovered they can control chemical reactions in a new way by creating different shapes of cerium oxide, a rare-earth-based catalyst. Their finding holds potential for refining fuels, decreasing vehicle emissions, producing commodity chemicals and advancing fuel cells and chemical sensors.
Scientists develop low-voltage water splitter that uses abundant materials
August 25, 2014 — In 2015, American consumers will finally be able to purchase fuel cell cars from Toyota and other manufacturers. Although touted as zero-emissions vehicles, most of the cars will run on hydrogen made from natural gas, a fossil fuel that contributes to global warming.
August 25, 2014 — If such a designation existed, Nazanin Bassiri-Gharb would be on the fast track to becoming an Oak Ridge National Laboratory “super user.
Catalytic Gold Nanoclusters Promise Rich Chemical Yields
August 22, 2014 — Old thinking was that gold, while good for jewelry, was not of much use for chemists because it is relatively nonreactive.
Understanding heat flows is focus of DOE Early Career Award winner Delaire
June 20, 2014 — Olivier Delaire, a scientist at the Department of Energy’s Oak Ridge National Laboratory, has won a prestigious Early Career Award from DOE’s Office of Science to study how heat propagates, or moves, through matter at an atomic level.
How to create nanowires only three atoms wide with an electron beam
April 28, 2014 — Junhao Lin, a Vanderbilt University Ph.D. student and visiting scientist at Oak Ridge National Laboratory (ORNL), has found a way to use a finely focused beam of electrons to create some of the smallest wires ever made. The flexible metallic wires are only three atoms wide: One thousandth the width of the microscopic wires used to connect the transistors in today’s integrated circuits.