Most recent 40 articles: PHYS.ORG - Technology
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Tesla founder Musk visits China as competitors show off new electric vehicles at Beijing auto show - PHYS.ORG - Technology  (Apr 29) |
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Apr 29 · Tesla founder and CEO Elon Musk met with a top government leader in the Chinese capital Sunday, just as the nation's carmakers are showing off their latest electric vehicle models at the Beijing auto show. Chinese Premier Li Qiang told Musk that he hopes the U.S. will work more with China on "win-win" cooperation, citing Tesla's operations in China as a successful example of economic cooperation, China's state broadcaster CCTV said on its main evening news program. For China, Musk is a welcome antidote to the tough talk from U.S. officials, which played out most recently during a visit by Secretary of State Antony Blinken. Li's remarks also reflect China's efforts to ... Read more ... |
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A strategy to boost the efficiency of perovskite/organic solar cells - PHYS.ORG - Technology  (Apr 28) |
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Apr 28 · So far, organic solar cells have achieved a maximum certified power conversion efficiency (PCE) of 19.4%, which is lower than that exhibited by silicon solar cells. A proposed strategy to boost their efficiency and stability entails combining these cells with cells based on mixed halide wide-bandgap perovskites, creating perovskite/organic tandem solar cells. While perovskite/organic tandem solar cells could theoretically achieve high PCEs and stabilities, their performance is hindered by a process known as phase segregation. This process degrades the performance of wide-bandgap perovskite cells and in turn adversely affects recombination processes at the tandem solar cells' ... Read more ... |
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Scientists are shaking up lithium extraction with a different kind of chemistry - PHYS.ORG - Technology  (Apr 27) |
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Apr 27 · When people think of chemistry, the image that typically comes to mind is a variety of colored liquids in beakers, flasks, and test tubes in a lab. But in actual practice, chemistry can involve materials in all states: liquids, gases, and even solids. Scientists at the Critical Materials Innovation (CMI) Hub, led by the U.S. Department of Energy's Ames National Laboratory, are using a subdiscipline of chemistry called mechanochemistry that literally shakes up the conventional understanding of chemical reactions, using mechanical forces that agitate, tumble, and smash solids to initiate chemical reactions. Their new process, mechanochemical extraction of lithium at low ... Read more ... |
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A framework to compare lithium battery testing data and results during operation - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · Existing methods to estimate the amount of Li in batteries rely on capacity measurements, describing how much charge a battery can hold, and coulombic efficiency values, which indicate how much charge a battery retains during cycles. Yet these measurements are not always accurate, as they do not account for unpredictable side reactions, self-discharge, and other effects affecting a battery's performance. "The primary objective of our study was to find a reliable methodology to compare battery testing data and operating results from various sources and conditions, as this could help to advance battery technology and development," Boryann Liaw, co-author of the paper, told Tech ... Read more ... |
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California battery storage increasing rapidly, but not enough to end blackouts, Gov. Newsom says - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · Gov. Gavin Newsom said on April 25 that California continued to rapidly add the battery storage that is crucial to the transition to cleaner energy, but admitted it was still not enough to avoid blackouts during heat waves. Standing in the middle of a solar farm in Yolo County, Newsom announced the state now had battery storage systems with the capacity of more than 10,000 megawatts - about 20% of the 52,000 megawatts the state says is needed to meet its climate goals. "This is critical to how we achieve 100% clean energy by 2045," Newsom said. "Batteries allow us to use clean energy captured by solar and other renewable sources at all times of the day, especially when ... Read more ... |
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Cat hides in Amazon return package - then ends up in California 700 miles from home - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · A cat went missing after hiding in an Amazon return package. Then her Utah owner got a call - from hundreds of miles away - that "changed everything." On April 10, Galena the kitty "vanished" from her home in Lehi, her owner, Carrie Stevens Clark, said in an April 21 Facebook post. Clark said she searched "every nook and cranny" in the home before flooding the neighborhood, a suburb of Salt Lake City, with fliers and posting on social media. "Nothing made sense!!," Clark said. Then came an unexpected breakthrough. Seven days later, Clark got a call saying Galena had been found in California and identified with her microchip, she said. Galena, it turned ... Read more ... |
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New approach could make reusing captured carbon far cheaper, less energy-intensive - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · Their approach dramatically reduces the cost and energy required for these direct air capture (DAC) systems, helping improve the economics of a process the researchers said will be critical to addressing climate change. The key is a new kind of catalyst and electrochemical reactor design that can be easily integrated into existing DAC systems to produce useful carbon monoxide (CO) gas. It's one of the most efficient such design ever described in scientific literature, according to lead researcher Marta Hatzell and her team. They have published the details in Energy & Environmental Science. "All of my team's research projects focus on decarbonization, which I care about ... Read more ... |
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Proof of concept study shows path to easier recycling of solar modules - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · The welds would eliminate the need for plastic polymer sheets that are now laminated into solar modules but make recycling more difficult. At the end of their useful lifespan, the modules made with the laser welds can be shattered. The glass and metal wires running through the solar cells can be easily recycled and the silicon can be reused. "Most recyclers will confirm that the polymers are the main issue in terms of inhibiting the process of recycling," said David Young, senior scientist and group manager for the High-Efficiency Crystalline Photovoltaics group in the Chemistry and Nanoscience department at NREL. Young is lead author of a new paper outlining the use of laser ... Read more ... |
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Reducing operation emissions and improving work efficiency using a pure electric wheel drive tractor - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · These scenarios require electric tractors to be able to adapt to complex drive and operating environments, putting higher requirements on the design of electric tractors and their control systems. Therefore, improving the operating efficiency of electric tractors and giving full play to their traction capacity have become urgent breakthrough issues. Specifically, existing tractors suffer from reduced traction efficiency, low fuel efficiency, and high greenhouse gas emissions when plowing on complex field surfaces. These issues are manifested as follows: high wheel slip due to the inability to achieve differential torque distribution between the left and right drive ... Read more ... |
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Researchers outline path forward for tandem solar cells - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · The vast majority of solar modules in use today rely on a single junction, which is able to absorb only a fraction of the solar spectrum and thus are limited to how efficient they can be. Tandem solar cells, which consist of two or more junctions, hold the potential to reach much higher efficiencies. Because tandems are stacked on top of each other, the total area a module requires decreases—in turn, raising the efficiency and potentially lowering the total system cost. Kirstin Alberi, the lead author of the journal article, titled "A Roadmap for Tandem Photovoltaics," said high-efficiency III-V multijunction solar cells have been available for decades but at small ... Read more ... |
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Team develops new testing system for carbon capture in fight against global warming - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · Now, the National Institute of Standards and Technology (NIST) aims to facilitate the development of this rapidly emerging technology that the International Energy Agency (IEA) says will be a "key technology" for combating global warming. NIST scientists have developed a high-precision testing apparatus for benchmarking the performance of the materials, called sorbents, used in DAC plants to trap and remove carbon from the air. The apparatus will enable the agency to develop research-grade test material (RGTM) sorbents for the DAC industry. These reference materials will be tested in the apparatus and validated to remove a certain amount of CO2 from a given amount of ... Read more ... |
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US probes whether Tesla Autopilot recall did enough to make sure drivers pay attention - PHYS.ORG - Technology  (Apr 26) |
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Apr 26 · The National Highway Traffic Safety Administration says in documents posted on its website Friday that Tesla has reported 20 more crashes involving Autopilot and since the recall. The crashes and agency tests raised concerns about the effectiveness of the remedy. The recall involved more than 2 million vehicles, nearly all the vehicles that Tesla had sold at the time. The agency pushed the company to do the recall after a two-year investigation into Autopilot's driver monitoring system, which measures torque on the steering wheel from a driver's hands. In the probe, the agency was looking at multiple cases in which Teslas on Autopilot ran into emergency vehicles parked on ... Read more ... |
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Underwater robot pioneers new energy-efficient buoyancy control - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · A remotely operated underwater robot built by a team of Rice University engineering students pioneers a new way to control buoyancy via water-splitting fuel cells. The device, designed and constructed at the Oshman Engineering Design Kitchen over the course of a year-long senior design capstone class, offers a more power-efficient method of maintaining neutral buoyancy—a critical component in underwater operations. The robot serves as proof-of-concept for the potential of fuel cell-based buoyancy control devices (BCDs) to reduce operating costs for remotely operated or autonomous underwater vehicles (AUVs) with potential applications ranging from environmental monitoring ... Read more ... |
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Using sodium to develop rechargeable batteries may bolster the EU's green ambitions - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · The idea behind sodium-ion batteries is to reduce Europe's reliance on the lithium-ion ones that power everything from toothbrushes and mobile phones to mopeds and cars. Today's batteries include materials such as lithium, nickel and cobalt that are both scarce and toxic, whereas sodium is one of the most plentiful elements on Earth. "Sodium-ion batteries are based on more abundant and safer materials than lithium-ion batteries," said Abou-Rjeily. "There's not enough lithium ions and cobalt and nickel to meet everyone's needs." He is a research and development engineer at Tiamat, which designs and manufactures sodium-ion batteries. Abou-Rjeily led a research ... Read more ... |
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Car giants vie for EV crown at Beijing's Auto China show - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · Chinese car giants locked in a cut-throat price war descended on the capital for the start of the Auto China show Thursday, vying to draw consumers and headlines in the world's biggest electric vehicle market and abroad. China's EV sector has exploded in recent years, and firms are now engaged in a no-holds-barred battle to offer customers the coolest accessories at the lowest prices. EV makers from China have made inroads into markets from Europe to Southeast Asia and Tesla's Elon Musk described them in January as "the most competitive car companies in the world". Beijing's Auto China show, which lasts until May 4, sees dozens of firms square off in a bid to draw ... Read more ... |
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Chinese automakers redefine the car as a living space at Beijing Auto Show - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · How about turning a car's front bucket seats 180 degrees so they face the rear seats and extending out a table so the occupants can play cards or eat a meal? Or a 43-inch (109 centimeter) screen for the passengers in the back seat? The seemingly never-ending efforts of China's electric car makers to redefine the automobile went on display Thursday at the opening of the nation's largest annual auto show. They are forcing established makers such as Volkswagen and Nissan to change the way they develop cars to remain players in what is the world's largest auto market. Nissan joined Toyota in announcing a tie-up at the Beijing Auto Show with a major Chinese technology company ... Read more ... |
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Electric cars and digital connectivity dominate at Beijing auto show - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · Global automakers and EV startups unveiled new models and concept cars at China's largest auto show on Thursday, with a focus on the nation's transformation into a major market and production base for digitally connected, new-energy vehicles. Toyota and Nissan both announced tie-ups with major Chinese technology companies as they strive to meet customer demand for AI-enabled online connectivity in cars, from social media apps to autonomous driving features. Electric vehicles accounted for about a quarter of all auto sales in China last year. Hybrids, which have trailed EVs, are expected to be a growing segment going forward. China's largest EV maker, BYD, showed ... Read more ... |
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Engineers uncover key to efficient and stable organic solar cells - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · Organic photovoltaics (OPV), which employs cost-effective, printable, and environmentally friendly polymer semiconductors, holds tremendous potential for generating sustainable and renewable energy. However, due to the soft nature of polymers, achieving OPV devices with both high efficiency and long operation stability has been a long-standing research challenge. By investigating the ultrafast charge dynamics using femtosecond laser pulses, the researchers first discovered that controlling the degree of aggregation of the polymerized Y6 acceptors (Y6-PAs) plays a crucial role in promoting electricity generation. This nanoscale percolation not only enhances charge ... Read more ... |
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Five things we learned at the China Auto Show - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · One of China's largest auto shows kicked off in Beijing on Thursday, with electric vehicle makers keen to show off their latest designs and high-tech accessories to consumers in the fiercely competitive market. Here are the key developments from Auto China's first day of action: The consumer tech giant is the latest entrant to China's cut-throat EV market, with its new SU7 model the star of the show. Less than one month after its launch, almost 76,000 pre-orders have been placed, Xiaomi said, an accumulation of orders that will take months to deliver given its current production capacity. Xiaomi boss Lei Jun was swarmed at Auto China on Thursday by legions of ... Read more ... |
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Honda announces US$11 bn EV battery and vehicle plant in Canada - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · Japanese auto giant Honda announced Thursday the largest automotive investment in Canada's history, worth Can$15 billion (US$11 billion), for a massive new EV battery and vehicle assembly plant. Honda chief executive Toshihiro Mibe told a joint news conference with Prime Minister Justin Trudeau and other officials that electric vehicles (EVs) will start rolling off the new assembly line in 2028. Once fully operational, the factory will have a production capacity of 240,000 vehicles per year, and a batteries output of 36 GWh per year. "The world is changing rapidly, and we must work toward realizing carbon neutrality to sustain the global environment," Mibe ... Read more ... |
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How electric vehicle drivers can escape range anxiety - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · Two of the biggest challenges faced by new and potential electric vehicle (EV) drivers are range anxiety and speed of charging, but these shouldn't have to be challenges at all. That is according to a study by Chalmers University of Technology, Sweden, and the University of Delaware, U.S. Researchers discovered that a change in refueling mindset, rather than improving the size or performance of the battery, could be the answer to these concerns. The transition from filling up at a petrol station to recharging your electric vehicle in the most convenient location for you, requires a whole new way of thinking about refueling a car. However, new EV drivers often remain in their ... Read more ... |
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How much energy can offshore wind farms in the U.S. produce? New study sheds light - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · For electric grid operators, knowing how much wind power these offshore turbines can harvest is critical, but making accurate predictions can be difficult. A team of CU Boulder scientists and their collaborators are working to tackle the challenge. In a paper published March 14 in Wind Energy Science, a team led by Dave Rosencrans, a doctoral student, and Julie K. Lundquist, a professor in the Department of Atmospheric and Ocean Sciences, estimates that offshore wind turbines in the Atlantic Ocean region, where the U.S. plans to build large wind farms, could take away wind from other turbines nearby, potentially reducing the farms' power output by more than ... Read more ... |
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Mask-inspired perovskite smart windows enhance weather resistance and energy efficiency - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · To overcome these challenges, researchers from City University of Hong Kong (CityUHK) developed a breathable, weather-resistant, low-haze perovskite smart window inspired by medical masks, pushing forward the wide applications of smart windows in green buildings. The findings are published in the journal Nature Communications in a paper titled "Mask-inspired moisture-transmitting and durable thermochromic perovskite smart windows." "This mask-inspired window structure design addresses the key issues of poor weather resistance and high optical haze that have long plagued thermochromic perovskite smart windows," explained by Professor Edwin Tso Chi-yan, Associate ... Read more ... |
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Tesla driver in Seattle-area crash that killed motorcyclist told police he was using Autopilot - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · A Tesla that may have been operating on the company's Autopilot driving system hit and killed a motorcyclist near Seattle, raising questions about whether a recent recall went far enough to ensure Tesla drivers using Autopilot pay attention to the road. After the crash Friday in a suburban area about 15 miles (24 kilometers) northeast of the city, the driver of a 2022 Tesla Model S told a Washington State Patrol trooper that he was using Autopilot and looked at his cellphone while the Tesla was moving. "The next thing he knew there was a bang and the vehicle lurched forward as it accelerated and collided with the motorcycle in front of him," the trooper wrote in a ... Read more ... |
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Understanding the impact of environmental factors on molded fiber products - PHYS.ORG - Technology  (Apr 25) |
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Apr 25 · In a study published in the Journal of Bioresources and Bioproducts, a group of researchers from China has outlined some mathematical models of the mechanical parameters of MFP they constructed. The change of mechanical parameters of MFP with moisture content (MC) was described, and the change of MC with temperature and humidity was described by the moisture sorption isotherm. "The preparation of MFP often requires the first preparation of the mold, but the time and labor cost of repeatedly preparing the mold verification are too high. These costs can be greatly reduced by the method of numerical simulation, and the mechanical parameters of the material are essential in the ... Read more ... |
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New insights lead to better next-gen solar cells - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Saliba and Malekshahi reached out to researchers at the Molecular Foundry, a Department of Energy Office of Science user facility located at Lawrence Berkeley National Laboratory (Berkeley Lab). Fast forward several months, and the Berkeley Lab team has applied a set of techniques to reveal changes in the crystalline structures of perovskite solar cell materials in real-time as they were being fabricated with Saliba's process. The results, published in a recent Advanced Materials paper, provide researchers with a deeper understanding of how to make better perovskite solar cells. "Material fabrication is often a black box," said Carolin Sutter-Fella, a Molecular Foundry ... Read more ... |
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Going with the flow: Research dives into electrodes on energy storage batteries - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Vanadium redox flow batteries (VRFBs) have emerged as promising solutions for stationary grid energy storage due to their high efficiency, scalability, safety, near-room-temperature operation conditions, and the ability to size power and energy capacities independently. The redox reactions in a redox flow battery occur at the surfaces of the electrodes in contact with the electrolyte. Any modifications to the electrode surface can affect the electrochemical activity and affect the overall battery performance. In an effort to extend the lifespans of VRFBs, Lawrence Livermore National Laboratory (LLNL) scientists and collaborators from the Pacific Northwest National Laboratory ... Read more ... |
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High-energy-density capacitors with 2D nanomaterials could significantly enhance energy storage - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Though the prototype device is just 1-inch by 1-inch, scaled-up versions of this innovation could potentially revolutionize energy storage systems across various industries, including medical, aviation, auto (EV), consumer electronics and defense. Dielectric capacitors, critical components of electronic devices and energy storage systems, are known for their ability to discharge high amounts of energy quickly, making them crucial for high-power applications. "High-energy and high-power capacitors are essential for a reliable power supply, especially as we shift to using more renewable energy sources. However, current dielectric capacitors don't store as much energy as ... Read more ... |
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Italy fines Amazon over 'recurring' purchase option - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Italy's competition authority said Wednesday it had fined two Amazon companies 10 million euros ($10.6 million) for unfair commercial practices, for pushing customers into agreeing to "recurring" rather than "one-time" purchases online. In a statement, the AGCM said the option to set up regular purchases was "pre-selected by default" on a wide selection of products listed on Amazon's Italian website. "The graphic layout of the pre-selected recurring purchase option may lead consumers to buy products periodically - even when there is no actual need - thereby limiting their ability to choose freely," the AGCM said in a statement. "Moreover, the conduct implemented by ... Read more ... |
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Microsoft and Amazon face scrutiny from UK competition watchdog over recent AI deals - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · British competition regulators said Wednesday they'll scrutinize recent artificial intelligence deals by Microsoft and Amazon over concerns that the moves could thwart competition in the AI industry. The Competition and Markets Authority said it's looking into Microsoft's partnership with France's Mistral AI and the company's hiring of key staff from another startup, Inflection AI. The watchdog also separately announced that it's investigating Amazon's $4 billion investment in San Francisco-based Anthropic. Big Tech companies have been pouring money into generative AI startups amid growing public and business interest in the technology, but the investments have also ... Read more ... |
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New survey finds positive perceptions of solar projects - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Among these respondents, 42% support additional development in their community, compared to 18% who would oppose further projects. At the same time, more than 80% of the respondents were unaware of the project prior to construction and a third did not know until completing the survey. Doug Bessette, associate professor for energy systems in the Department of Community Sustainability at Michigan State University's College of Agriculture and Natural Resources, was one of the leads on the project. "The responses from residents were generally positive, which is good to see considering the amount of solar that is likely to be developed in the coming years," Bessette said. "At ... Read more ... |
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Rubber-like stretchable energy storage device fabricated with laser precision - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · The advent of wearable technology has brought with it a pressing need for energy storage solutions that can keep pace with the flexibility and stretchability of soft electronic devices. Micro supercapacitors (MSCs) have emerged as a promising candidate for deformable energy storage, due to high-power density, rapid charging, and long cycle life. However, the fabrication of interdigitated electrode patterns capable of maintaining the energy storage performance under repeated stretching and twisting has remained a great challenge, because brittle materials like gold (Au) have been commonly used as an electrode. Meanwhile, though eutectic gallium-indium liquid metal (EGaIn) has ... Read more ... |
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Salt battery harvests osmotic energy where the river meets the sea - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Estuaries - where freshwater rivers meet the salty sea - are great locations for birdwatching and kayaking. In these areas, waters containing different salt concentrations mix and may be sources of sustainable, "blue" osmotic energy. Osmotic energy can be generated anywhere salt gradients are found, but the available technologies to capture this renewable energy have room for improvement. One method uses an array of reverse electrodialysis (RED) membranes that act as a sort of "salt battery," generating electricity from pressure differences caused by the salt gradient. To even out that gradient, positively charged ions from seawater, such as sodium, flow through the ... Read more ... |
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Securing competitiveness of energy-intensive industries through relocation: The pulling power of renewables - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · This 'renewables pull' would create strong incentives for businesses to invest in low-emission production facilities in these renewable-rich countries. Renewable-scarce countries could put all focus on down-stream production and refinement as the smart way to secure industrial competitiveness. "Our new study shows that renewable-scarce countries like parts of the EU, Japan and South Korea could save between 18 to 38 percent in production costs," explains Philipp Verpoort, scientist at the Potsdam Institute for Climate Impact Research (PIK) and lead author of the study published in Nature Energy. "They could do so by relocating their production of industrial basic ... Read more ... |
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Single-walled carbon nanotubes doped with 'nitrogen' enhance the performance of secondary battery anode - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Silicon, despite offering significantly higher energy density compared to graphite (a common anode material), suffers from a major drawback: it expands 3-4 times during charging and discharging, leading to performance degradation. To address this issue, researchers are blending silicon with graphite to balance their strengths and weaknesses. To maximize silicon content and overcome its limitations, the Korea Electrotechnology Research Institute (KERI) has utilized nitrogen-doped single-walled carbon nanotubes and graphene. Single-walled carbon nanotubes, being thinner and more conductive than multi-walled ones, present challenges in dispersion due to their small diameter. ... Read more ... |
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Storing and utilizing energy with innovative sulfur-based cathodes - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Sulfur is a sustainable alternative to the materials commonly used in lithium-ion batteries because it is less toxic and—unlike cobalt—is abundant. However, the storage capacity of batteries in which sulfur is used as a cathode material has so far declined rapidly. "Our development paves the way for sulfur electrodes as a viable alternative to conventional metal-based cathodes. It could fundamentally change the way we store and use energy and represents an important step towards a more sustainable future," explains Prof Bojdys. Solving the sulfur-shuttle problem using polymer chemistry With sulfur-based cathodes, the mobility of the sulfur has so far ... Read more ... |
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Study shows potential of super grids when hurricanes overshadow solar panels - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Caribbean islands are starting to shift away from importing expensive fossil fuels, using instead their own abundant sun and wind to make electricity. However, their frequent hurricanes can put a damper on solar energy generation. Researchers at the Department of Energy's Oak Ridge National Laboratory developed a comprehensive modeling method to predict the drop in electricity generation better when these storm clouds overshadow solar panels. The team explored ways to compensate for these energy losses with super grids, a collection of grids connected so electricity can flow across island chains or between continents. The historically underserved island residents can't ... Read more ... |
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Tesla 1Q profit falls 55%, but stock jumps as company moves to speed production of cheaper vehicles - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Tesla's first-quarter net income plummeted 55%, but its stock price surged in after-hours trading Tuesday as the company said it would move up production of new, more affordable vehicles. The Austin, Texas, company said it made $1.13 billion from January through March compared with $2.51 billion in the same period a year ago. Investors and analysts were looking to the earnings release for some sign that Tesla will move to end a stock slide this year and reverse the sales decline. The company did that in a letter to investors Tuesday, saying that production of smaller, more affordable models will start in the second half next year, ahead of previous guidance. The ... Read more ... |
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Ultra-thin, flexible solar cells demonstrate their promise in a commercial quadcopter drone - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · Conventional energy solutions—including fossil fuels, batteries and other alternative energy generation methods—have their challenges. For example, they are either often too large, require cables or stationary charging, negatively impact on the environment, or their power density is too low. Ultra-thin and flexible solar cells made from a new material called "perovskite" are proving to be an efficient and lightweight solution to facilitate self-sufficient energy generation over extended periods of time. As part of a groundbreaking development, researchers at the JKU have now succeeded in developing ultra-lightweight quasi-2D perovskite solar cells with an ... Read more ... |
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Using liquid metal to develop energy storage systems with 100 times better heat transfer - PHYS.ORG - Technology  (Apr 24) |
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Apr 24 · From April 22 to 26, 2024, the researchers will present a model of their energy storage system at the KIT stand at the Energy Solutions (Hall 13, Stand C76) of the Hannover Messe. Worldwide, high-temperature heat storage systems are being developed to supply resource-intensive production companies with heat independently of fluctuating renewable energy production. These storage systems convert electrical power into heat, which is then stored. The heat is used if needed, for instance when electricity is expensive and production processes cannot be stopped. The higher the temperature stored, the better. This reduces the amount of additional energy that would be needed to ... Read more ... |
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