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Category: solar power – Page 138

Los Alamos is the 1st place where QC Internet was launched.

A research team from Los Alamos National Laboratory published a paper in the journal Nature Energy this week that demonstrates an effective method for scaling up quantum dot solar power technology from production models to full-sized windows that could power a building.

“We are developing solar concentrators that will harvest sunlight from building windows and turn it into electricity, using quantum-dot based luminescent solar concentrators,” lead scientist and leader of the Los Alamos Center for Advanced Solar Photophysics (CASP) Victor Klimov said.

The Los Alamos paper advances techniques relating to luminescent solar concentrators (LSCs) – slabs of transparent glass or plastic into or onto which highly emissive fluorophores are placed in order to create large-area sunlight collectors for photovoltaic cells – examining large LSC windows that were created by using a blade to create a thin, highly uniform film on a surface. The quantum dots used in the Nature Energy study are dual-layered semiconductor spheres that enable control over the two separate layers’ emission spectra.

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Lee Teschler

Executive Editor

@dw_LeeTeschler

The days of launching complete satellites and similar extraterrestrial objects into orbit may be numbered. Instead, orbiting robots will construct them in space. The basic principles of this concept are being perfected by a company called Tethers Unlimited Inc. in Bothell Wash. under a NASA contract. Tethers’ SpiderFab: Architecture for On-Orbit Construction of Kilometer-Scale Apertures, will enable on-orbit fabrication of super-large objects such as antennas, solar panels, trusses, and other multifunctional structures. In ten years, Tethers expects to perfect the technology to a degree that will make possible self-fabricating, self-assembling satellites.

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Batteries in smart phones and other portable electronics often die at inopportune times. Carrying a spare battery is one solution. As an alternative, researchers have tried to create fibers to incorporate in clothing that would power these devices. However, many of these fibers can’t withstand clothing manufacturing, especially weaving and cutting.

Now, in the journal ACS Nano, scientists report the first fibers suitable for weaving into tailorable textiles that can capture and release solar energy.

To collect solar power, Wenjie Mai, Xing Fan and colleagues created two different types of fibers. One contained titanium or a manganese-coated polymer along with zinc oxide, a dye and an electrolyte. These fibers were then interlaced with copper-coated polymer wires to create the solar cell section of the textile. To store power, the researchers developed a second type of fiber. This one was made of titanium, , a thin carbon shell to prevent oxidation and an electrolyte. These were woven with cotton yarn.

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Phototactic behaviour directs some bacteria towards light and others into darkness: This enables them to utilize solar energy as efficiently as possible for their metabolism, or, otherwise, protects them from excessive light intensity. A team of researchers headed by Clemens Bechinger from the Max Planck Institute for Intelligent Systems and the University of Stuttgart, as well as colleagues from the University of Düsseldorf have now found a surprisingly simple way to direct synthetic microswimmers towards light or darkness. Their findings could eventually lead to minuscule robots that seek out and treat lesions in the human body.

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In a discovery that could have profound implications for future energy policy, Columbia scientists have demonstrated it is possible to manufacture solar cells that are far more efficient than existing silicon energy cells by using a new kind of material, a development that could help reduce fossil fuel consumption.

The team, led by Xiaoyang Zhu, a professor of Chemistry at Columbia University, focused its efforts on a new class of solar cell ingredients known as Hybrid Organic Inorganic Perovskites (HOIPs).

Their results, reported in the prestigious journal Science, also explain why these new materials are so much more efficient than traditional solar cells—solving a mystery that will likely prompt scientists and engineers to begin inventing new solar materials with similar properties in the years ahead.

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Just like checking your bag on a commercial airline, space travel comes with some pretty big weight restrictions. How big? According to estimates, reaching space costs a whopping $10,000 per pound, which means that every ounce saved has a big impact on the bottom line.

That’s where a group of Danish researchers comes in. The team is working on a synthetic biology project called CosmoCrops, which hopes to use bacteria to make it possible to 3D print everything needed for a respectable space mission, using a cutting-edge co-culturing system. And it could even make life better for those of us back on Earth in the process.

“We are trying to make space exploration cheaper, because many inventions we use in our daily life were invented because of space exploration, like Velcro and solar energy,” Joachim Larsen, one of the students working on the project, told Digital Trends. “The way we want to achieve this is to [be] able to produce everything from food to medicine and bioplastic for 3D printers out in space — making the space rocket a lot lighter.”

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Definitely many benefits to 4D including manufacturing, tech devices, and energy.

A team of researchers has uncovered the key to what they call 4D printing – and solar energy may be one of the top 2 fields to benefit from the great invention.

Did your eyes widen in disbelief with the invention of 3D printing as plastic, ceramic, glass, living cells, and even chocolate were born out of a printer? Now it may seem like yesterday’s news. In a way, it kind of is. The 2D laser printer in your home office is probably looking more and more archaic to you these days – or if you’re still using one of those prehistoric dot matrix printers from the 1980s, shame on you. It’s time to step into the future with 4D printing.

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Researchers design aqueous battery that stores solar energy better than current lithium technology.

Batteries based on water that can store the electricity that we generate from solar technology? It can now be done.

Researchers at Ohio State University have designed a device with an aqueous flow battery that is based on water as opposed to the standard lithium design of your average rechargeable batteries. It is the first aqueous flow battery to work with a solar cell and it is 20 percent more efficient than the lithium design.

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Scientists at the Energy Department’s National Renewable Energy Laboratory (NREL) discovered a use for perovskites that runs counter to the intended usage of the hybrid organic-inorganic material.

Considerable research at NREL and elsewhere has been conducted into the use of organic-inorganic hybrid perovskites as a solar cell. Perovskite systems have been shown to be highly efficient at converting sunlight to electricity. Experimenting on a lead-halide perovskite, NREL researchers found evidence the material could have great potential for optoelectronic applications beyond photovoltaics, including in the field of quantum computers.

Today, Nature Communications published the research, Large Polarization-Dependent Exciton Optical Stark Effect in Lead Iodide Perovskites. Authors of the paper are Ye Yang, Mengjin Yang, Kai Zhu, Justin Johnson, Joseph Berry, Jao van de Lagemaat, and Matthew Beard.

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Aquila — facebook’s solar powered internet drone

The internet provides information, opportunity and human connection, yet less than half the world has access. We’re proud to announce the successful first test flight of #Aquila, the solar airplane we designed to bring internet access to people living in remote locations. This innovative plane has the wingspan of an airliner but weighs less than a small car and flies on roughly the power of three blow dryers — incredible!

Source: #facebook

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