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. The charge asymmetry creates an extra “switch” that brings new functionalities to materials when “flipped” by external stimuli such as electric fields or mechanical strain. This makes polar materials useful for devices such as sensors and actuators.
depth, population-based approach to identifying such mechanisms for adaptation, and describes a method that could be harnessed for developing more accurate predictive climate change models. For the U.S. Department of...
The Spallation Neutron Source at the Department of Energy’s Oak Ridge National Laboratory broke records for sustained beam power level as well as for integrated energy and target lifetime in the month of June.
The American Conference on Neutron Scattering returned to Knoxville this week, 12 years after its inaugural meeting there in 2002.
Thomas Wilbanks and Benjamin Preston, both of the Climate Change Science Institute (CCSI) at Oak Ridge National Laboratory (ORNL), are among the 309 coordinating lead authors of the Intergovernmental Panel on Climate Change’s (IPCC’s) Working Group II (WG II) report.
Carbon dioxide in the atmosphere may get the lion’s share of attention in climate change discussions, but the biggest repository of carbon is actually underfoot: soils store an estimated 2.5 trillion tons of carbon in the form of organic matter.
Photovoltaic spray paint could coat the windows and walls of the future if scientists are successful in developing low-cost, flexible solar cells based on organic polymers. Scientists at the Department of Energy’s Oak Ridge National Laboratory recently discovered an unanticipated factor in the performance of polymer-based solar devices that gives new insight on how these materials form and function.
Former Energy Secretary Steven Chu mixed his Wigner Distinguished Lecture on Feb . 12 with a description of his current research at Stanford and his outlook on energy policy and climate change.
Researchers at the Department of Energy’s Oak Ridge National Laboratory and the University of Tennessee, Knoxville have pioneered a new technique for forming a two-dimensional, single-atom sheet of two different materials with a seamless boundary.
Jack Fellows, the new director of the Climate Change Science Institute at Oak Ridge National Laboratory, wants his organization to provide comprehensive information to policy makers and the general public to improve understanding of global climate change.