Archive for the ‘solar power’ category: Page 21

Nov 20, 2022

ESA SOLARIS: Wireless Power Beamed Down From Space

Posted by in categories: business, government, solar power, space, sustainability

Solar power could be gathered far away in space and transmitted wirelessly down to Earth to wherever it is needed. The European Space Agency (ESA) plans to investigate key technologies needed to make Space-Based Solar Power a working reality through its SOLARIS initiative. Recently in Germany, one of these technologies, wireless power transmission, was demonstrated to an audience of decision-makers from business and government.

The demonstration took place at Airbus’ X-Works Innovation Factory in Munich. Microwave beaming was used to transmit green energy between two points representing ‘Space’ and ‘Earth’ over a distance of 36 meters.

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Nov 19, 2022

Artificial Photosynthesis Advance: Standalone Device Converts Sunlight, CO2 and Water Into Clean Fuel

Posted by in categories: solar power, sustainability

Researchers have developed a standalone device that converts sunlight, carbon dioxide, and water into a carbon-neutral fuel, without requiring any additional components or electricity.

The device, developed by a team from the University of Cambridge, is a significant step toward achieving artificial photosynthesis.

Photosynthesis is how plants and some microorganisms use sunlight to synthesize carbohydrates from carbon dioxide and water.

Nov 16, 2022

Reservations for new community of 3D homes in Georgetown to open in 2023

Posted by in categories: habitats, internet, security, solar power, sustainability

The community will offer eight different floor plans, ranging from three to four bedrooms and two to three bathrooms. Homes will be powered by rooftop solar panels, include a Ring Video Doorbell Pro, Schlage Encode Smart WiFi deadbolt, a Honeywell Home T6 Pro WiFi smart thermostat and a Wolf Ranch security package.

RELATED: The Georgetown gem that gleams rich with history: Southwestern University

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Nov 15, 2022

World’s largest floating wind farm is now powering gas and oil production

Posted by in categories: climatology, solar power, sustainability

It will be used to power oil and gas production.

Hywind Tampen, the world’s largest floating wind farm, located off the coast of Norway, has become operational, a company press release said. Of the 11 turbines involved in the project, the first turbine began power production on November 13, with another six scheduled to go online this year.

With the impending doom of climate change and the recent upshoot of fuel prices, countries around the world are looking to switch aggressively to renewable energy. While those in the tropics are looking at solar power, others that can access winds over the seas are looking to build offshore wind farms.

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Nov 15, 2022

New discoveries made about a promising solar cell material, thanks to new microscope

Posted by in categories: solar power, sustainability

A team of scientists from the Department of Energy’s Ames National Laboratory has developed a new characterization tool that allowed them to gain unique insight into a possible alternative material for solar cells. Under the leadership of Jigang Wang, senior scientist from Ames Lab, the team developed a microscope that uses terahertz waves to collect data on material samples. The team then used their microscope to explore methylammonium lead iodide (MAPbI3) perovskite, a material that could potentially replace silicon in solar cells.

Richard Kim, a scientist from Ames Lab, explained the two features that make the new scanning probe microscope unique. First, the microscope uses the terahertz range of electromagnetic frequencies to collect data on materials. This range is far below the , falling between the infrared and microwave frequencies. Secondly, the terahertz light is shined through a sharp metallic tip that enhances the microscope’s capabilities toward nanometer length scales.

“Normally if you have a light wave, you cannot see things smaller than the wavelength of the light you’re using. And for this terahertz light, the wavelength is about a millimeter, so it’s quite large,” explained Kim. “But here we used this sharp metallic tip with an apex that is sharpened to a 20-nanometer radius curvature, and this acts as our antenna to see things smaller than the that we were using.”

Nov 14, 2022

US military drone lands safely after spending record-breaking 908 days in space

Posted by in categories: drones, military, solar power, space travel, sustainability

With 3,774 days in space under its belt, the solar-powered X-37B has already traveled more than 1.3 billion miles.

After a record-breaking 908 days in orbit for its sixth mission, a U.S. military drone touched down at NASA’s Kennedy Space Center, early on Saturday.

“Since the X-37B’s first launch in 2010, it has shattered records and provided our nation with an unrivaled capability to rapidly test and integrate new space technologies,” stated Jim Chilton, a senior vice president for Boeing, its developer.

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Nov 12, 2022

AI Researchers from the Netherlands Propose a Machine Learning-based Method to Design New Complex Metamaterials with Useful Properties

Posted by in categories: chemistry, robotics/AI, solar power, space, sustainability

Combinatorial problems often arise in puzzles, origami, and metamaterial design. Such problems have rare collections of solutions that generate intricate and distinct boundaries in configuration space. Using standard statistical and numerical techniques, capturing these boundaries is often quite challenging. Is it possible to flatten a 3D origami piece without causing damage? This question is one such combinatorial issue. As each fold needs to be consistent with flattening, such results are difficult to predict simply by glancing at the design. To answer such questions, the UvA Institute of Physics and the research center AMOLF have shown that researchers may more effectively and precisely respond to such queries by using machine learning techniques.

Despite employing severely undersampled training sets, Convolutional Neural Networks (CNNs) can learn to distinguish these boundaries for metamaterials in minute detail. This raises the possibility of complex material design by indicating that the network infers the underlying combinatorial rules from the sparse training set. The research team thinks this will facilitate the development of sophisticated, functional metamaterials with artificial intelligence. The team’s recent study examined the accuracy of forecasting the characteristics of these combinatorial mechanical metamaterials using artificial intelligence. Their work has also been published in the Physical Review Letters publication.

The attributes of artificial materials, which are engineered materials, are governed by their geometrical structure rather than their chemical makeup. Origami is one such metamaterial. The capacity of an origami piece to flatten is governed by how it is folded, i.e., its structure, and not by the sort of paper it is made of. More generally, the clever design enables us to accurately regulate a metamaterial’s bending, buckling, or bulging. This can be used for many different things, from satellite solar panels that unfurl to shock absorbers.

Nov 11, 2022

Chemists create an ‘artificial photosynthesis’ system ten times more efficient than existing systems

Posted by in categories: chemistry, climatology, solar power, sustainability

For the past two centuries, humans have relied on fossil fuels for concentrated energy; hundreds of millions of years of photosynthesis packed into a convenient, energy-dense substance. But that supply is finite, and fossil fuel consumption has tremendous negative impact on Earth’s climate.

“The biggest challenge many people don’t realize is that even nature has no solution for the amount of energy we use,” said University of Chicago chemist Wenbin Lin. Not even is that good, he said: “We will have to do better than nature, and that’s scary.”

One possible option scientists are exploring is “”—reworking a plant’s system to make our own kinds of fuels. However, the chemical equipment in a single leaf is incredibly complex, and not so easy to turn to our own purposes.

Nov 9, 2022

A high-speed sequential deposition strategy to fabricate photoactive layers for organic cells

Posted by in categories: solar power, sustainability

Organic photovoltaics, solar energy devices based on organic semiconductors, have so far achieved very promising results in experimental settings, both in terms of efficiency and stability. However, engineers have not yet devised reliable strategies to fabricate these devices on a large-scale at a reasonable cost.

Researchers at Wuhan University in China have recently identified an approach that could facilitate the rapid fabrication of photoactive layers for , without compromising the cells’ efficiency and stability. Their proposed strategy, introduced in a paper published in Nature Energy, is based on sequential deposition, a method often used to deposit organic semiconductors and perovskite films on substrates.

“To realize the commercialization of organic photovoltaics (OPVs), the golden triangle of power conversion efficiency (PCE), stability, and cost should be considered simultaneously,” Jie Min, one of the researchers who carried out the study, told TechXplore.

Nov 9, 2022

A new leaf unfolds in artificial photosynthesis

Posted by in categories: chemistry, solar power, sustainability

In 2021, researchers from Toyota Central R&D Labs developed a large, cost-effective artificial photosynthesis system that produces industrial formate at a solar-to-chemical conversion efficiency (ηSTC) of 10.5%1. Researchers from the lab say that, to their knowlege, this ηSTC is a first for a one metre squared cell.

Within the next 10 years, the company aims to establish artificial photosynthesis technology for wide-scale production of useful carbon compounds.

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