Lifeboat Foundation

Graphene, an atomically thin carbon layer through which electrons can travel virtually unimpeded, has been extensively studied since its first successful isolation more than 15 years ago. Among its many unique properties is the ability to support highly confined electromagnetic waves coupled to oscillations of electronic charge—plasmon polaritons—that have potentially broad applications in nanotechnology, including biosensing, quantum information, and solar energy.

However, in order to support plasmon polaritons, graphene must be charged by applying a voltage to a nearby metal gate, which greatly increases the size and complexity of nanoscale devices. Columbia University researchers report that they have achieved plasmonically active graphene with record-high charge density without an external gate. They accomplished this by exploiting novel interlayer charge transfer with a two-dimensional electron-acceptor known as α-RuCl3. The study is available now online as an open access article and will appear in the December 9th issue of Nano Letters.

“This work allows us to use graphene as a plasmonic material without metal gates or voltage sources, making it possible to create stand-alone graphene plasmonic structures for the first time” said co-PI James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering.

It seems the company has already hired personnel for the effort.

Wherever you have fluid, there you can also find vortex rings.

Now, scientists have found vortex rings somewhere fascinating — inside a tiny pillar made of a magnetic material, the gadolinium-cobalt intermetallic compound GdCo₂.

If you’ve seen smoke rings, or bubble rings under water, you’ve seen vortex rings: doughnut-shaped vortices that form when fluid flows back on itself after being forced through a hole.

Circa 1997

Berkeley — An ultrasensitive, superfluid gyroscope developed by physicists at UC Berkeley has the potential to surpass today’s most sensitive devices for measuring absolute rotation or spin.

In a paper in this week’s issue of Nature, physics professor Richard Packard and his colleagues, graduate students Keith Schwab and Niels Bruckner, report a proof-of-principle demonstration of the new device.

Continue reading “04.10.97 Develop Ultrasensitive Gyroscope Based on Superfluid Helium” »

This video explains all types of mutations.

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Researchers discover distinct gut bacteria prevalent in people with clinical depression compared to healthy people.

Andrea Macdonald founder of ideaXme interviews Commissioner Virginijus Sinkevičius, European Commissioner for the Environment, Oceans and Fisheries.

The EU Commission @European Commission.

Continue reading “Virginijus Sinkevičius, European Commissioner for Environment, Oceans and Fisheries” »

They were coasting to the Moon when a ruptured oxygen tank derailed the mission.

50 years later, watch “Apollo 13: ‘Houston, We’ve Had a Problem’” to see how a tale of tragedy would turn into a tale of triumph: https://youtu.be/MdvoA-sjs0A

Continue reading “Apollo 13: ‘Houston, We’ve Had a Problem’” »

Researchers claim to have reversed ageing in mice. It has long been believed that if we understand the causes of ageing, it may be possible to reverse it. New work on mice shows that it is possible to cure vision loss caused by old age or injury. Researchers think that this effect may depend on rewinding the ‘biological clock’ which marks the age of cells, suggesting that the cells in the eye have been made functionally younger.

Read the paper here: https://www.nature.com/articles/s41586-020-2975-4

Continue reading “Rewinding the biological clock: How to reverse ageing” »