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Tech Briefs

Graduate student Chung-Tao (Josh) Chou speaks with Tech Briefs reporter Andrew Corselli about his work developing a magnetic transistor that could lead to more energy-efficient circuits. “People have known about magnets for thousands of years, but there are very limited ways to incorporate magnetism into electronics,” says Chou. “We have shown a new way to efficiently utilize magnetism that opens up a lot of possibilities for future applications and research.”

Tech Briefs

Prof. Steve Leeb and graduate student Daniel Monagle speak with Tech Briefs reporter Edward Brown about their work “designing an energy management interface between an energy harvesting source and a sensor load that will give the best possible results.” Monagle notes that in the future they hope to make the system “smaller so that it can fit in tight places like inside a motor terminal box. But beyond that we want to take advantage of AI tools to design techniques for minimizing the energy used by the system.” 

Forbes

Researchers at MIT have developed magnetic transistors, “which could enable faster and more energy-efficient semiconductors,” reports Alex Knapp for Forbes. “Researchers have been trying to use magnets this way for years, but the materials used so far haven’t been optimal for computing functions,” explains Knapp. “That changed after experimenting with chromium sulfur bromide, which replaces the silicon in a conventional microchip and enables the transistors to be switched on and off with an electric current.” 

Nature

Writing for Nature, Bruce Allen pays tribute to Prof. Emeritus Rainer Weiss, a pioneering physicist who “spearheaded the construction of the LIGO observatory to detect Einstein’s predicted ripples in space-time [and] leaves a legacy of persistence and mentorship.” Allen recalls how, decades earlier, Weiss rejoiced in a moment of discovery with him. “This is why we do science,” Weiss said. “Not for prizes or awards — that’s all nonsense. It’s for the satisfaction when something you’ve struggled with finally works.” Weiss, Allen emphasizes, was “a scientist driven by curiosity, persistence and the joy of understanding how the Universe works.”

The Wall Street Journal

Wall Street Journal reporter Jon Mooallem memorializes the life and work of Prof. Emeritus Rainer Weiss, from his time hacking surplus military electronics into sophisticated hi-fi receivers as a teenager to dreaming up the concept for the Laser Interferometer Gravitational-Wave Observatory (LIGO). Mooallem notes that Weiss and his LIGO colleagues’ breakthrough in achieving the first-ever detection of gravitational waves “has provided a new way of looking at the universe, of observing, through the charting of gravity waves emitted by moving objects, what was previously unobservable or unknown—a milestone that is frequently compared with Galileo’s invention of the telescope.”

The Boston Globe

Prof. Rainer Weiss, a Nobel Prize-winning physicist whose research helped “unlock the secrets of the universe,” has died at 92, reports Bryan Marquard for The Boston Globe. “He really is, by a large margin, the most influential person this field has seen. And will see,” said Caltech Prof. Emeritus Kip Thorne. Nergis Mavalvala, dean of the MIT School of Science who conducted her doctoral research with Weiss, shared that Weiss “worked on three different things, and every one of them has changed the way we understand physics and the universe.”

CNN

CNN visits the lab of Prof. Kevin Chen to learn more about his group’s work developing a bee-like robot that can flap its wings up to 400 times a second and flip and hover, and a grasshopper-inspired robot that can hop 20 centimeters into the air in terrains ranging from grass to ice. Chen and his colleagues hope the insect-inspired robots could one day help with tasks like artificial pollination or search and rescue operations. Insects have “evolved for millions of years. There’s a lot to be learned from insect motion, behavior and structure," Chen explains.

Space.com

Prof. Emeritus Rainer Weiss, a “renowned experimental physicist” who was “integral in confirming the existence of tiny ripples in spacetime called ‘gravitational waves,’” has died, reports Robert Lea for Space.com. “Remarkably, in confirming the existence of gravitational waves, Weiss both proved Einstein right and wrong at the same time,” writes Lea. “Einstein had been convinced that these ripples in spacetime were so faint that no apparatus on Earth could ever be sensitive enough to detect them, showing just how revolutionary LIGO was.”

Tri-City Herald

Tri-City Herald reporter Annette Cary memorializes the life and legacy of MIT Prof. Emeritus Rainer Weiss, a “renowned experimental physicist and Nobel laureate,” who was “key to [the] world’s first gravitational wave discovery.” At the opening ceremony in June 2022 for the LIGO Exploration Center in Hanford, Washington, Weiss relayed how life is more interesting if you have a deeper understanding of the world around you and “how science does its tricks.”

Physics World

Physics World reporter Michael Banks chronicles the life and work of MIT Prof. Emeritus and gravitational wave pioneer Rainer Weiss. “Weiss came up with the idea of detecting gravitational waves by measuring changes in distance as tiny as 10–18 m via an interferometer several kilometers long,” writes Banks. “His proposal eventually led to the formation of the twin Laser Interferometer Gravitational-Wave Observatory (LIGO), which first detected such waves in 2015.” 

New York Times

Professor Emeritus Rainer Weiss, a Nobel Prize-winning physicist who was honored for his work "developing a device that uses gravity to detect intergalactic events, like black holes colliding, and who helped confirm two central hypotheses about the universe,” has died at 92, reports Dylan Loeb McClain for The New York Times. In an earlier interview, Weiss reflected upon the wonder unlocked by LIGO: “With gravitational waves, you have a new way to look at [the] universe. You can see all that nature has in store. So now comes the question: What do you want to find out?”

WBUR

WBUR reporter Rachell Sanchez-Smith spotlights two health tech devices being developed by Prof. Yoel Fink and Prof. Canan Dağdeviren, respectively, that aim to “give the wearers — and their doctors — a clearer picture of their overall health.” Fink has created “a thread capable of storing data, running artificial intelligence algorithms, sensing motion and sound, and communication through Bluetooth,” while Dağdeviren’s wearable ultrasound scanner can be used to make breast cancer screening “more comfortable and more accurate,” explains Sanchez-Smith.  

Gizmodo

Researchers at MIT have found a new “iteration of a foundational quantum experiment,” reports Gayoung Lee for Gizmodo. They “successfully replicated the double-slit experiment on the atomic scale, allowing for an unprecedented level of empirical precision,” writes Lee. “By using supercold atoms as ‘slits’ for light to pass through, the team confirmed that the wave-particle duality of light—with all its paradoxical properties—holds up even on the most fundamental quantum scales.” 

Interesting Engineering

Physicists at MIT have provided new insights into the world of quantum mechanics after successfully performing the double-slit experiment with “incredible atomic precision,” reports Mrigakshi Dixit for Interesting Engineering. The researchers “discovered a clear relationship: the more precisely they determined a photon’s path (confirming its particle-like behavior), the more the wave-like interference pattern faded,” explains Dixit. “The researchers observed that the wave interference pattern weakened any time an atom was nudged by a photon passing by. This confirmed that getting information about the photon’s route automatically erased its wave-like properties.”  

New York Times

Prof. Emeritus Daniel Kleppner, “an experimental physicist who helped to develop an atomic clock that became an essential part of global positioning systems (GPS),” has died at the age of 92, reports Dylan Loeb McClain for The New York Times. In addition to his work in atomic clocks, Kleppner also “helped to discover a rare fundamental state of matter predicted by Albert Einstein and his fellow theoretical physicist Satyendra Nath Bose,” writes McClain.