Lifeboat Foundation

As hemp makes a comeback in the U.S. after a decades-long ban on its cultivation, scientists are reporting that fibers from the plant can pack as much energy and power as graphene, long-touted as the model material for supercapacitors. They’re presenting their research, which a Canadian start-up company is working on scaling up, at the 248th National Meeting & Exposition of the American Chemical Society (ACS).

David Mitlin, Ph.D., explains that supercapacitors are energy storage devices that have huge potential to transform the way future electronics are powered. Unlike today’s rechargeable batteries, which sip up energy over several hours, supercapacitors can charge and discharge within seconds. But they normally can’t store nearly as much energy as batteries, an important property known as energy density. One approach researchers are taking to boost supercapacitors’ energy density is to design better electrodes. Mitlin’s team has figured out how to make them from certain hemp fibers—and they can hold as much energy as the current top contender: graphene.

“Our device’s electrochemical performance is on par with or better than graphene-based devices,” Mitlin says. “The key advantage is that our electrodes are made from biowaste using a simple process, and therefore, are much cheaper than graphene.”

Continue reading “Could hemp nanosheets topple graphene for making the ideal supercapacitor?” »

Divergent has created a green 3D print automotive manufacturing platform that radically reduces materials, energy, and cost.

Elon Musk has agreed to build what is being hailed the “world’s largest virtual power plant”, by rolling out solar panels and Tesla batteries to 50,000 homes in South Australia. The scheme, which will be completed over the next four years, will see any excess energy stored in each battery fed back into the grid to provide power to the rest of the state whenever required. The South Australian government claims participating households will generate a total of 250MW of electricity – about half as much energy produced by a typical coal-fired power station. Read more — Elon Musk about to launch…

You can’t peer very far down into a well or below the surface of the ocean before things go dark—light does not penetrate to such depths. Though the brain is far from bottomless, neuroscientists face the same lack of light when they try to study living deep-brain structures. This is especially frustrating given that optogenetics, a method for manipulating genetically tagged brain cells with light, has exploded in popularity over the past decade. “Optogenetics has been a revolutionary tool for controlling neurons in the lab, and hopefully someday in the clinic,” says Thomas McHugh, research group leader at the RIKEN Brain Science Institute in Japan. “Unfortunately, delivering light within brain tissue requires invasive optical fibers.”

McHugh and colleagues now have a solution for sending light to new depths in the brain. As they report in Science on February 9, upconversion nanoparticles (UCNPs) can act as a conduit for laser light delivered from outside the skull. These nanoparticles absorb near-infrared laser light and in turn emit visible photons to areas that are inaccessible to standard optogenetics. This method was used to turn on neurons in various brain areas as well as silence seizure activity and evoke memory cells. “Nanoparticles effectively extend the reach of our lasers, enabling the ‘remote’ delivery of light and potentially leading to non-invasive therapies,” says McHugh.

In optogenetics, blue-green light is used to turn neurons on or off via light-responsive ion channels. Light at these wavelengths, however, scatters strongly and is at the other end of the spectrum from the near-infrared light that can penetrate deeper into brain tissue. UCNPs composed of elements from the lanthanide family can act as a bridge. Their ‘optogenetic actuation’ turns low-energy near-infrared laser light into blue or green wavelengths for control of specifically labeled cells. Though such bursts of light deliver considerable energy to a small area, temperature increases or cellular damage were not observed.

Continue reading “Nanoparticles Enable Non-Invasive Optogenetic Control of Brain Cell Activity With Near-Infrared Light” »

Engineers at the University of Maryland, College Park (UMD) have found a way to make wood more than 10 times times stronger and tougher than before, creating a natural substance that is stronger than many titanium alloys.

“This new way to treat wood makes it 12 times stronger than natural wood and 10 times tougher,” said Liangbing Hu of UMD’s A. James Clark School of Engineering and the leader of the team that did the research, to be published on February 8, 2018 in the journal Nature. “This could be a competitor to steel or even titanium alloys, it is so strong and durable. It’s also comparable to carbon fiber, but much less expensive.” Hu is an associate professor of materials science and engineering and a member of the Maryland Energy Innovation Institute.

“It is both strong and tough, which is a combination not usually found in nature,” said Teng Li, the co-leader of the team and Samuel P. Langley Associate Professor of mechanical engineering at UMD’s Clark School. His team measured the dense wood’s mechanical properties. “It is as strong as steel, but six times lighter. It takes 10 times more energy to fracture than natural wood. It can even be bent and molded at the beginning of the process.”

Continue reading “New process could make wood as strong as titanium alloys but lighter and cheaper” »

“In a brief statement to Reuters, the Italy-based company said that they had “no interest whatsoever in selling power”to a mining company”

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Tesla has been making big moves on the energy storage market in Australia, but they are now all being dwarfed by this new project that will see them install solar arrays and Powerwalls on 50,000 homes to create the biggest virtual power plant in the world. The company’s main project has been the 100MW/ 129MWh Powerpack project in South Australia, the largest in the world for now. But now instead of being a large centralized battery system using Tesla’s Powerpacks, the new project announced today is using Tesla’s residential battery system, the Powerwall, to create decentralized energy stora…

The operators of the first all-electric ferry in Norway are starting to get some good data on the vehicle and it’s nothing short of impressive. They claim that the all-electric ferry cuts emission by 95% and costs by 80% compared to fuel-powered counterparts and the results are attracting customers. The ferry in question is called “Ampere” and it was put into operation back in May 2015 with the aim to reduce NOx and CO₂ emissions, as well as noise pollution on the water. It was the result of an extensive partnership between Norled AS, a shipping company and ferry operator, Fjellstrand Shipy…