![Neutron interactions revealed the orthorhombic structure of the hybrid perovskite stabilized by the strong hydrogen bonds between the nitrogen substituent of the methylammonium cations and the bromides on the corner-linked PbBr6 octahedra. Neutron interactions revealed the orthorhombic structure of the hybrid perovskite stabilized by the strong hydrogen bonds between the nitrogen substituent of the methylammonium cations and the bromides on the corner-linked PbBr6 octahedra.](/sites/default/files/styles/list_page_thumbnail/public/news/images/18-G00289_Wang_PR_proof1%5B1%5D.png?itok=hvANRH9J)
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![Neutron interactions revealed the orthorhombic structure of the hybrid perovskite stabilized by the strong hydrogen bonds between the nitrogen substituent of the methylammonium cations and the bromides on the corner-linked PbBr6 octahedra. Neutron interactions revealed the orthorhombic structure of the hybrid perovskite stabilized by the strong hydrogen bonds between the nitrogen substituent of the methylammonium cations and the bromides on the corner-linked PbBr6 octahedra.](/sites/default/files/styles/list_page_thumbnail/public/news/images/18-G00289_Wang_PR_proof1%5B1%5D.png?itok=hvANRH9J)
Scientists at Oak Ridge National Laboratory have conducted a series of breakthrough experimental and computational studies that cast doubt on a 40-year-old theory describing how polymers in plastic materials behave during processing.
![Eugene Dumitrescu, Ben Lawrie, Matthew Feldman, and Jordan Hachtel (from left) have conducted investigations aimed at controlling the dissipative nature of quantum systems and materials. The cathodoluminescence microscope used in their work appears at rig Eugene Dumitrescu, Ben Lawrie, Matthew Feldman, and Jordan Hachtel (from left) have conducted investigations aimed at controlling the dissipative nature of quantum systems and materials. The cathodoluminescence microscope used in their work appears at rig](/sites/default/files/styles/list_page_thumbnail/public/Quantum%20physics%20main%20photo%5B1%5D_0.jpg?itok=Y67Yqnmc)
![From left, Andrew Lupini and Juan Carlos Idrobo use ORNL’s new monochromated, aberration-corrected scanning transmission electron microscope, a Nion HERMES to take the temperatures of materials at the nanoscale. Image credit: Oak Ridge National Laboratory From left, Andrew Lupini and Juan Carlos Idrobo use ORNL’s new monochromated, aberration-corrected scanning transmission electron microscope, a Nion HERMES to take the temperatures of materials at the nanoscale. Image credit: Oak Ridge National Laboratory](/sites/default/files/styles/list_page_thumbnail/public/news/images/2018-P00413.jpg?itok=UKejk7r2)
A scientific team led by the Department of Energy’s Oak Ridge National Laboratory has found a new way to take the local temperature of a material from an area about a billionth of a meter wide, or approximately 100,000 times thinner than a human hair.
![ORNL_graphene_substrate ORNL_graphene_substrate](/sites/default/files/styles/list_page_thumbnail/public/ORNL_graphene_substrate_lrg.jpg?itok=iyFGI1Cb)
A new method to produce large, monolayer single-crystal-like graphene films more than a foot long relies on harnessing a “survival of the fittest” competition among crystals.
![Juan Carlos Idrobo Juan Carlos Idrobo](/sites/default/files/styles/list_page_thumbnail/public/juan_carlos_close_bb.jpg?itok=2QuFm1AK)
![ORNL researchers married helium-ion microscopy with a liquid cell from North Carolina-based Protochips Inc., to fabricate exceedingly pure, precise platinum structures. Credit: Stephen Jesse/Oak Ridge National Laboratory, U.S. Dept. of Energy ORNL researchers married helium-ion microscopy with a liquid cell from North Carolina-based Protochips Inc., to fabricate exceedingly pure, precise platinum structures. Credit: Stephen Jesse/Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/news/images/Materials_nanostructures_1.jpg?itok=BIP2szyJ)
![ORNL researcher Miaofang Chi refines her microscopy techniques toward understanding how and why materials have certain properties. ORNL researcher Miaofang Chi refines her microscopy techniques toward understanding how and why materials have certain properties.](/sites/default/files/styles/list_page_thumbnail/public/M_Chi_casual_0.png?itok=uvQT5OzH)
Material surfaces and interfaces may appear flat and void of texture to the naked eye, but a view from the nanoscale reveals an intricate tapestry of atomic patterns that control the reactions between the material and its environment.
![Scientists peer inside materials used to clean automotive exhaust to understand why one works better than the other. Red and blue dots represent positions of copper and aluminum atoms, respectively, for two zeolite catalysts (SSZ-13 and ZSM-5) used in a d Scientists peer inside materials used to clean automotive exhaust to understand why one works better than the other. Red and blue dots represent positions of copper and aluminum atoms, respectively, for two zeolite catalysts (SSZ-13 and ZSM-5) used in a d](/sites/default/files/styles/list_page_thumbnail/public/news/images/figure%20for%20ornl%20press%20release%20r1.jpg?itok=7Vi5WBBe)
Diesel vehicles today emit far fewer pollutants than older vehicles, thanks to a zeolite (hydrous silicate) catalytic converter that was invented around 10 years ago to reduce pollutants that cause the formation of acid rain and smog.
![Default image of ORNL entry sign](/sites/default/files/styles/list_page_thumbnail/public/2023-09/default-thumbnail.jpg?h=553c93cc&itok=N_Kd1DVR)
Five researchers at the Department of Energy’s Oak Ridge National Laboratory have been elected fellows of the American Association for the Advancement of Science (AAAS). AAAS, the world’s largest multidisciplinary scientific society