JACS Spotlights March 22, 2022 Superatoms are small symmetric clusters of atoms with electronic states bunched together into closely packed shells. Like their individual-atom counterparts, superatoms with filled shells have the greatest electronic stability. Typical stable octahedral transition metal chalcogenide clusters have a single set of filled electron shells and …
Electric vehicles don’t require gasoline, but they do require grease. Existing greases are OK for windshield wipers, door hinges, and window winder mechanisms, but the bearings and gears in the drive train are a different story. High operating temperatures and voltages are key concerns. As current densities increase, so does the risk of stray currents that can pit bearings. Typical electric motor speeds, currently around 15,000 rpm, are expected to exceed 20,000 rpm in the near future.
Electric vehicle fluids differ in fundamental ways from those used for internal combustion engines—and from each other. TLT October 2021 • Electric vehicle (EV) transmission fluids, which multitask as lubricants and coolants, are likely to be formulated as vehicle design elements, with fill-for-life applications in mind.• EV fluid formulations may …
In the ocean or on remote mountainsides, grease lubricants help slowly rotating wind turbine main shaft bearings reliably support their huge loads year after year. TLT January 2020
How in the world do you generate electricity from the slow-moving water in a river delta? Think about all the ways we have of generating electricity. You can turn a turbine using steam. You can place the turbine in a waterfall and have the falling water turn the blades, or …
This afternoon, I joined the Earth Ethics Committee of the Washington Ethical Society and friends for a tour of the Camille Kendall Academic Center of the Universities at Shady Grove (Rockville, MD). When this building received a LEED (Leadership in Energy and Environmental Design) Gold certification, it was the largest …
On March 11, 2011, a tsunami, a giant wave set off by an earthquake, struck the Fukushima-Daiichi Nuclear Power Station in Japan. The tsunami caused a catastrophic failure of the power station and a release of radioactive material that has been rated second in magnitude only to the Chornobyl disaster. …
by Nancy McGuire, Wordchemist.com On January 24, a panel of seven journalists gathered at Washington, DC’s, Wilson Center to brief an overflow crowd of policy wonks, issue advocates, writers and reporters, and other interested citizens on the likely hot topics in environment and energy for 2014. The annual event, co-sponsored …
by Nancy McGuire, Wordchemist.com On January 24, a panel of seven journalists gathered at Washington, DC’s, Wilson Center to brief an overflow crowd of policy wonks, issue advocates, writers and reporters, and other interested citizens on the likely hot topics in environment and energy for 2014. The annual event, co-sponsored …
by Nancy McGuire, Wordchemist.com On January 24, a panel of seven journalists gathered at Washington, DC’s, Wilson Center to brief an overflow crowd of policy wonks, issue advocates, writers and reporters, and other interested citizens on the likely hot topics in environment and energy for 2014. The annual event, co-sponsored …
