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Novel feature-extended analysis unlocks the origin of energy loss in electrical steel

Magnetic hysteresis loss (iron loss) is an important magnetic property that determines the efficiency of electric motors and is therefore critical for electric vehicles. It occurs when the magnetic field within the motor core, made up of soft magnetic materials, is repeatedly reversed due to the changing flow of current in the windings. This reversal forces tiny magnetic regions called magnetic domains to repeatedly change their magnetization direction.

However, this change is not perfectly efficient and results in energy loss. In fact, iron loss accounts for approximately 30% of the total energy loss in motors, leading to the emission of carbon dioxide, which represents a pressing environmental concern.

Despite over half a century of research, the origin of iron loss in soft magnetic materials remains elusive. The energy spent during magnetization reversal in these materials depends on complex changes in magnetic domain structures. These have mainly been interpreted visually, and the underlying mechanisms have been discussed only qualitatively.

Development of revolutionizing photo-induced microscopy and its use around the globe celebrated in new publication

Photo-induced force microscopy began as a concept in the mind of Kumar Wickramasinghe when he was employed by IBM in the early years of the new millennium. After he came to the University of California, Irvine in 2006, the concept evolved into an invention that would revolutionize research by enabling scientists to study the fundamental characteristics of matter at nanoscale resolution.

Since the earliest experimental uses of PiFM around 2010, the device, which reveals the chemical composition and spatial organization of materials at the , has become a tool of choice for researchers in fields as diverse as biology, geology, materials science and even advanced electronics manufacturing.

“This is the story of a technology that was inspired by work at IBM, was invented and developed at UC Irvine, then got spun off, and now we have instruments on all continents across the world except for Antarctica,” says Wickramasinghe, Henry Samueli Endowed Chair and Distinguished Professor emeritus of electrical engineering and computer science who now holds the title of UC Irvine Distinguished Research Professor. “Almost anywhere serious research is happening, there are people out there who are using PiFM to discover new things.”

Rocket maker Firefly Aerospace files to go public under ticker FLY

Rocket maker Firefly Aerospace filed for an initial public offering on Friday, with plans to trade under the ticker symbol “FLY” on the Nasdaq.

Firefly’s planned offering comes during a resurgence period for IPOs after the market collapsed in 2022 as rising interest rates and skyrocketing inflation deterred investors from betting on riskier assets.

Some companies, including Klarna and ticket reseller StubHub, delayed public offerings earlier this year as President Donald Trump’s tariff plans rattled global markets. But venture capitalists are becoming more optimistic after a strong June for deal activity that included a surge in crypto company Circle and a major Meta Platforms deal with Scale AI. Figma also filed its prospectus earlier this month.

Tapping into the million-year energy source below our feet

There’s an abandoned coal power plant in upstate New York that most people regard as a useless relic. But MIT’s Paul Woskov sees things differently.

Woskov, a research engineer in MIT’s Plasma Science and Fusion Center, notes the plant’s power turbine is still intact and the transmission lines still run to the grid. Using an approach he’s been working on for the last 14 years, he’s hoping it will be back online, completely carbon-free, within the decade.

In fact, Quaise Energy, the company commercializing Woskov’s work, believes if it can retrofit one power plant, the same process will work on virtually every coal and gas power plant in the world.

Quaise is hoping to accomplish those lofty goals by tapping into the energy source below our feet. The company plans to vaporize enough rock to create the world’s deepest holes and harvest geothermal energy at a scale that could satisfy human energy consumption for millions of years. They haven’t yet solved all the related engineering challenges, but Quaise’s founders have set an ambitious timeline to begin harvesting energy from a pilot well by 2026. (Circa June 28 2022/Posted first in Lifeboat jn, 2022 by Gemechu Taye & Genevieve Klein)

MIT spinout Quaise Energy is working to create geothermal wells made from the world’s deepest holes in order to repurpose coal and gas plants.

Rare blue proteins from cold-adapted microbes could serve as prototypes for molecular on-off switches

Imagine the magnificent glaciers of Greenland, the eternal snow of the Tibetan high mountains, and the permanently ice-cold groundwater in Finland. As cold and beautiful as these are, for the structural biologist Kirill Kovalev, they are more importantly home to unusual molecules that could control brain cells’ activity.

Kovalev, EIPOD Postdoctoral Fellow at EMBL Hamburg’s Schneider Group and EMBL-EBI’s Bateman Group, is a physicist passionate about solving biological problems. He is particularly hooked by rhodopsins, a group of colorful proteins that enable aquatic microorganisms to harness sunlight for energy.

“In my work, I search for unusual rhodopsins and try to understand what they do,” said Kovalev. “Such molecules could have undiscovered functions that we could benefit from.”

Shape memory polymers with nanotips help solve micro-LED chip transfer problem

A research team at Pohang University of Science and Technology (POSTECH), has developed a novel dry adhesive technology that allows everything from microscale electronic components to common household materials to be easily attached and detached.

The study was recently published in the journal Nature Communications, and the team was led by Professor Seok Kim in collaboration with Professor Kihun Kim (POSTECH), Professor Namjoong Kim (Gachon University), Professor Haneol Lee (Chonbuk National University), and Dr. Chang-Hee Son (University of Connecticut, U.S.).

Micro-LEDs, a next-generation display technology, offer significant advantages such as higher brightness, longer lifespan, and the ability to enable flexible and transparent displays. However, transferring micro-LED chips—thinner than a strand of hair—onto target substrates with high precision and minimal residue has been a persistent challenge. Conventional methods relying on liquid adhesives or specialized films often result in overly complex processes, poor alignment accuracy, and residual contamination.

Researchers uncover cause of uranium groundwater contamination

A new study published in the journal Environmental Science & Technology and led by researchers at Columbia University Mailman School of Public Health identifies the hidden geological mechanisms behind widespread uranium contamination in Eastern Karnataka, India, where 78% of tested groundwater exceeds safe drinking limits for uranium, and some groundwater uranium contamination reaches levels 75 times the U.S. EPA limit. Uranium exposure can affect the kidneys, bones, and the liver, yet contamination often goes undetected.

Floating Robotics: Advanced Greenhouse Automation Solutions

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Discover Floating Robotics’ cutting-edge robotic systems designed to automate greenhouse tasks like harvesting and de-leafing, enhancing efficiency and sustainability in modern agriculture.

New study uncovers surprising physics of ‘marine snow’

The deep ocean can often look like a real-life snow globe. As organic particles from plant and animal matter on the surface sink downward, they combine with dust and other material to create “marine snow,” a beautiful display of ocean weather that plays a crucial role in cycling carbon and other nutrients through the world’s oceans.

Now, researchers from Brown University and the University of North Carolina at Chapel Hill have found surprising new insights into how particles sink in stratified fluids like oceans, where the density of the fluid changes with depth. In a study published in Proceedings of the National Academy of Sciences, they show that the speed at which particles sink is determined not only by resistive drag forces from the fluid, but by the rate at which they can absorb salt relative to their volume.

“It basically means that can sink faster than bigger ones,” said Robert Hunt, a postdoctoral researcher in Brown’s School of Engineering who led the work. “That’s exactly the opposite of what you’d expect in a fluid that has uniform density.”

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