Strain Doping: A New Approach to Understanding and Controlling Advanced Materials
June 16, 2015 — Helium ions were used to control the length of a single axis in a crystal lattice, allowing for delicate manipulations of complex behavior. This accomplishment unlocks the door to engineering next-generation complex materials.
Electron Beam Guides Engineering of Functional Defects
May 20, 2015 — The electron beam of a scanning transmission electron microscope was applied to generate Se vacancies in a semiconducting monolayer of MoSe2, provide energy to drive the formation and growth of inversion domains and metallic 60˚ grain boundaries, and track the dynamics.
Oxygen Controls Surface of Epitaxial Manganite Films
May 18, 2015 — This atomically resolved study revealed a strong link between oxygen pressure and both surface-structure formation and growth dynamics in manganite thin films. The work provides key insights into controlling atomic-level behavior necessary for growing functional materials, such as manganese oxides for electronic and solid-oxide fuel cell applications.
Confining Liquids in Hollow Nanospheres Can Yield Superior Quasi-Solid Electrolytes
May 06, 2015 — The growth and proliferation of lithium dendrites during cell recharge seriously hinder development and application of rechargeable Li-metal batteries. Researchers developed a promising strategy for fabrication of quasi−solid electrolytes with superior lithium ionic conductivities, by using a hollow silica (HS) nanosphere-film architecture that blocks dendrites.
Materials scientists use ORNL’s CADES to transform big data to ‘smart data’ for rapid image analysis
April 20, 2015 — Materials scientists use ORNL’s CADES to transform big data to ‘smart data’ for rapid image analysis. ORNL material sciences researchers are collaborating with computer scientists in ORNL’s Compute and Data Environment for Science (CADES) to create a processing and analysis workflow for the expansive scanning probe and electron microscopy data generated at the Center for Nanophase Materials Sciences (CNMS).