Nanoparticle Assembly: Expanding the Realm of the Possible

JACS Spotlights Feb. 22, 2022 Nanoparticles assemble themselves into a multitude of compositions and structures, and the range of possible applications appears almost limitless. Robert Macfarlane and co-workers give an overview of the history and current state of nanoparticle assembly research, focusing on assembly approaches and emergent properties of the …

Artificial intelligence for real-world mechanical systems

Artificial intelligence offers a wealth of resources for solving complex problems, but accurate predictions and understandable results still require human participation. TLT Feature February 2022 Artificial intelligence offers a wealth of resources for solving complex problems in mechanical friction and wear–helicopter transmissions and gears that are deep inside large machines, …

The electric vehicle grease industry finds its bearings

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.

Touring a Green Building

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 …

Energy and the Environment: Global Issues, Local Actions

by Nancy McGuire, Wordchemist.com A newly assertive federal executive branch, push-back from the legislature and judicial system, unintended effects of social activism, unanticipated effects of leaking storage tanks and Arctic thaws, who’s using coal, reasons to “go green” that don’t involve tree-hugging — 2014 will have no shortage of news …

Where Do We Go From Here?

Last in a three-part series on unmanned vehicles (see Part 1 and Part 2) At present, unmanned aerial vehicles — “drones” in popular parlance — are used for military surveillance and strikes, civilian environmental and wildlife monitoring, and scientific research purposes. Private citizens use remotely operated toy airplanes and helicopters …

// Back to Top