Transistors, the building blocks of modern electronics, are typically made of silicon. Because it’s a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits that restrict how compact and energy-efficient a transistor can be.

MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could enable smaller, faster, and more energy-efficient circuits. The material’s magnetism strongly influences its electronic behavior, leading to more efficient control of the flow of electricity. 

The team used a novel magnetic material and an optimization process that reduces the material’s defects, which boosts the transistor’s performance.

The material’s unique magnetic properties also allow for transistors with built-in memory, which would simplify circuit design and unlock new applications for high-performance electronics.

“People have known about magnets for thousands of years, but there are very limited ways to incorporate magnetism into electronics. We have shown a new way to efficiently utilize magnetism that opens up a lot of possibilities for future applications and research,” says Chung-Tao Chou, an MIT graduate student in the departments of Electrical Engineering and Computer Science (EECS) and Physics, and co-lead author of a paper on this advance.

Chou is joined on the paper by co-lead author Eugene Park, a graduate student in the Department of Materials Science and Engineering (DMSE); Julian Klein, a DMSE research scientist; Josep Ingla-Aynes, a postdoc in the MIT Plasma Science and Fusion Center; Jagadeesh S. Moodera, a senior research scientist in the Department of Physics; and senior authors Frances Ross, TDK Professor in DMSE; and Luqiao Liu, an associate professor in EECS, and a member of the Research Laboratory of Electronics; as well as others at the University of Chemistry and Technology in Prague. The paper appears today in Physical Review Letters.

Overcoming the limits

In an electronic device, silicon semiconductor transistors act like tiny light switches that turn a circuit on and off, or amplify weak signals in a communication system. They do this using a small input voltage.

But a fundamental physical limit of silicon semiconductors prevents a transistor from operating below a certain voltage, which hinders its energy efficiency.

To make more efficient electronics, researchers have spent decades working toward magnetic transistors that utilize electron spin to control the flow of electricity. Electron spin is a fundamental property that enables electrons to behave like tiny magnets.

So far, scientists have mostly been limited to using certain magnetic materials. These lack the favorable electronic properties of semiconductors, constraining device performance.

“In this work, we combine magnetism and semiconductor physics to realize useful spintronic devices,” Liu says.

The researchers replace the silicon in the surface layer of a transistor with chromium sulfur bromide, a two-dimensional material that acts as a magnetic semiconductor.

Due to the material’s structure, researchers can switch between two magnetic states very cleanly. This makes it ideal for use in a transistor that smoothly switches between “on” and “off.”

“One of the biggest challenges we faced was finding the right material. We tried many other materials that didn’t work,” Chou says.

They discovered that changing these magnetic states modifies the material’s electronic properties, enabling low-energy operation. And unlike many other 2D materials, chromium sulfur bromide remains stable in air.

To make a transistor, the researchers pattern electrodes onto a silicon substrate, then carefully align and transfer the 2D material on top. They use tape to pick up a tiny piece of material, only a few tens of nanometers thick, and place it onto the substrate.

“A lot of researchers will use solvents or glue to do the transfer, but transistors require a very clean surface. We eliminate all those risks by simplifying this step,” Chou says.

Leveraging magnetism

This lack of contamination enables their device to outperform existing magnetic transistors. Most others can only create a weak magnetic effect, changing the flow of current by a few percent or less. Their new transistor can switch or amplify the electric current by a factor of 10.

They use an external magnetic field to change the magnetic state of the material, switching the transistor using significantly less energy than would usually be required.

The material also allows them to control the magnetic states with electric current. This is important because engineers cannot apply magnetic fields to individual transistors in an electronic device. They need to control each one electrically.

The material’s magnetic properties could also enable transistors with built-in memory, simplifying the design of logic or memory circuits.

A typical memory device has a magnetic cell to store information and a transistor to read it out. Their method can combine both into one magnetic transistor.

“Now, not only are transistors turning on and off, they are also remembering information. And because we can switch the transistor with greater magnitude, the signal is much stronger so we can read out the information faster, and in a much more reliable way,” Liu says.

Building on this demonstration, the researchers plan to further study the use of electrical current to control the device. They are also working to make their method scalable so they can fabricate arrays of transistors.

This research was supported, in part, by the Semiconductor Research Corporation, the U.S. Defense Advanced Research Projects Agency (DARPA), the U.S. National Science Foundation (NSF), the U.S. Department of Energy, the U.S. Army Research Office, and the Czech Ministry of Education, Youth, and Sports. The work was partially carried out at the MIT.nano facilities.

When we use the internet, we're entrusting tech companies with some of our most private information. These companies have promised they'll keep our data safe. But what happens when the government comes knocking at their doors? In our latest EFFector newsletter, we hear from an EFF client whose data was given to ICE after Google broke its promise to him.

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For over 35 years, EFFector has been your guide to understanding the intersection of technology, civil liberties, and the law. This latest issue covers the ongoing fight to reform NSA surveillance, the many attempts to censor 3D printing, and the cost of Google's broken promise to its users.

Prefer to listen in? EFFector is now available on all major podcast platforms. This time, we're chatting with EFF Senior Staff Attorney F. Mario Trujillo about how state attorneys general can hold Google accountable for failing to protect users targeted by the government. You can find the episode and subscribe on your podcast platform of choice:

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Agencies Ignored EFF’s Public-Records Requests Regarding Unlawful Efforts to Locate People Who Criticized the Government or Attended Protests.

SAN FRANCISCO – The Electronic Frontier Foundation (EFF) sued the Department of Homeland Security (DHS) and Immigration and Customs Enforcement (ICE) today demanding public records about their use of administrative subpoenas to try to identify their online critics.

Court records and news reports show that in the past year, DHS has used administrative subpoenas to unmask or locate people who have documented ICE's activities in their community, criticized the government, or attended protests. The subpoenas are sent to technology companies to demand information about internet users who are often engaged in protected First Amendment activity.

These subpoenas are dangerous because they don’t require judges’ approval. But they are also unlawful, and the government knows it. When a few users challenged them in court with the help of American Civil Liberties Union affiliates in Northern California and Pennsylvania, DHS withdrew them rather than waiting for a decision.

DHS and ICE have ignored EFF’s public-records requests for documents about the processes behind these subpoenas, so EFF sued Wednesday in the U.S. District Court for the District of Columbia.

“DHS and ICE should not be able to first claim that they have the legal authority to unmask critics and then run from court when users challenge these administrative subpoenas,” said EFF Deputy Legal Director Aaron Mackey. “The public deserves to know what laws the agencies believe give them the power to issue these speech-chilling subpoenas.”

An administrative subpoena cannot be used to obtain the content of communications, but they have been used to try and obtain some basic subscriber information like name, address, IP address, length of service, and session times. If a technology company refuses to comply, an agency’s only recourse is to drop it or go to court and try to convince a judge that the request is lawful.

EFF and the ACLU of Northern California in February ​wrote to Amazon, Apple, Discord, Google, Meta, Microsoft, Reddit, SNAP, TikTok, and X​ to ask that they insist on court intervention and an order before complying with a DHS subpoena; give users as much notice as possible when they are the target of a subpoena, so the users can seek help; and resist gag orders that would prevent the companies from notifying users who are targets of subpoenas.

And EFF last week ​asked California’s and New York’s attorneys general to investigate Google​ for deceptive trade practices for breaking ​its promise​ to notify users before handing their data to law enforcement, citing the case of a doctoral student who was targeted with an ICE subpoena after briefly attending a pro-Palestine protest.

EFF in early March filed public-records requests with DHS and ICE for their policies, procedures, guidelines, directives, memos, and legal analyses supporting such use of administrative subpoenas. EFF also requested all Inspector General or oversight records, all approval and issuance procedures for the subpoenas, all records reflecting how many such subpoenas have been issued, all communications with technology companies concerning these demands, all communications regarding specific named targets or programs, and all communications with the Department of Justice regarding such subpoenas.

DHS and ICE have not responded, even though EFF requested expedited processing of its requests, which requires agencies to get back to requesters within 10 days.

“The policies, directives, and authorization records governing the program have not been disclosed,” the complaint notes. “The legal basis asserted by DHS and ICE for using a customs statute to compel disclosure of information about persons engaged in constitutionally protected speech and association has not been made public.”

For the complaint: https://www.eff.org/document/eff-v-dhs-ice-administrative-subpoenas-complaint

For EFF’s letter urging tech companies to protect users: ​https://www.eff.org/deeplinks/2026/02/open-letter-tech-companies-protect-your-users-lawless-dhs-subpoenas​

For EFF’s letter urging state probes of Google: ​https://www.eff.org/press/releases/eff-state-ags-investigate-googles-broken-promise-users-targeted-government​

Tags: free speechprivacyanonymityDHSICEContact:  AaronMackey Deputy Legal Director/Free Speech and Transparency Litigation Directoramackey@eff.org

ICE has admitted that it uses spyware from the Israeli company Graphite.

A "carbon-intelligent computing" tool has come in handy as the tech giant negotiates with utilities to connect data centers to the grid.

Officials from a shuttered climate and health office offer a postmortem about the limits of their work in a Democratic administration in the hopes of continuing their efforts under a future president.

A new analysis shows the state's vital infrastructure such as power plants and police stations is highly exposed to flood damage.

The shift could affect glacier mass and freshwater resources depended on by large numbers of people.

The research has already led to some conclusions that strengthened California's fire code.

The U.S. is the second-largest market for long-lasting energy storage and is expected to ramp up deployments later this decade.

Wind is gathering interest in India due to its ability to meet high demand in the evening and early morning, when solar power is absent.

Citing skyrocketing prices, members of parliament from across the aisle want the institution’s plenary sessions to be held in Brussels.

The Japan Meteorological Agency will use the term “kokushobi,” which means “severely hot day,” to “effectively raise awareness and encourage caution” among the public.

The next time you find yourself lulled by the patter of rain outside your window, think how that same sprinkle might sound if you were a tiny seed planted directly below a free-falling droplet. Would you still be similarly soothed?

In fact, MIT engineers have found the opposite to be the case: Some seeds may come alive to the sound of rain. In experiments with rice seeds, the team found that the sound of falling droplets effectively shook the seeds out of a dormant state, stimulating them to germinate at a faster rate compared with seeds that were not exposed to the same sound vibrations.

The team’s findings, which are published today in the journal Scientific Reports, are the first direct evidence that plant seeds and seedlings can sense sounds in nature. Their experiments involved rice seeds that they submerged in shallow water. Rice can germinate in both soil and shallow water. The researchers suspect that many similar seed types may also respond to the sound of rain.

The team worked out a hypothesis to explain how the seeds might be doing this. They found that when a raindrop hits the surface of a puddle or the ground, it generates a sound wave that makes the surroundings vibrate, including any shallowly submerged seeds. These vibrations can be strong enough to dislodge a seed’s “statoliths,” which are tiny gravity-sensing organelles within certain cells of a seed. When these statoliths are jostled, their movement is a signal for seeds and seedlings to grow and sprout.

“What this study is saying is that seeds can sense sound in ways that can help them survive,” says study author Nicholas Makris, a professor of mechanical engineering at MIT. “The energy of the rain sound is enough to accelerate a seed’s growth.”

Makris and his co-author, Cadine Navarro, a former graduate student in MIT’s Department of Urban Studies and Planning, suspect that the sound of rain is similar to the vibrations generated by other natural phenomena such as wind. They plan to follow up this work to investigate other natural vibrations and sounds plants may perceive.

Sound vibration

Plants are surprisingly perceptive. To help them survive, plants have evolved to sense and respond to stimuli in their surroundings. Some plants snap shut when touched, while others curl inward when exposed to toxic smells. And of course, most plants respond to light, reaching toward the sun to help them grow.

Plants can also sense gravity. A plant’s roots grow down, while its shoots push up against gravity’s pull. One way that plants sense and respond to gravity is through their statoliths. Statoliths are denser than a cell’s cytoplasm and can drift and sink through the cell, like a bit of sand in a jar of water. When a statolith finally settles to the bottom, its resting place on the cell’s membrane is a reflection of gravity’s direction and a signal for where a seed’s root or shoot should grow. If the statolith is dislodged, scientists have found that this can also trigger the seed to grow more.

Makris, whose work focuses on acoustics across a range of disciplines, became curious when Navarro asked him questions about seeds and sound. They wondered: Could sound be enough to jostle the statoliths and stimulate a seed to grow? And if so, what sounds in nature could be strong enough to have such an effect?

“I went back to look at work done by colleagues in the 1980s, who measured the sound of rain underwater. If you check, you’ll see it’s much greater than in the air,” Makris says. “It has to do with the fact that water is denser than air, so the same drop makes larger pressure waves underwater. So if you’re a seed that’s within a few centimeters of a raindrop’s impact, the kind of sound pressures that you would experience in water or in the ground are equivalent to what you’d be subject to within a few meters of a jet engine in the air.”

Such rain-induced soundwaves, Makris and Navarro suspected, might be enough to jostle statoliths and subsequently stimulate a seed’s growth.

Connecting a droplet’s dots

To test this idea, the researchers carried out experiments with rice seeds, which naturally grow in shallow watery fields. Over a large number of repeated experiments, the team submerged roughly 8,000 individual seeds of rice in shallow tubs of water and exposed sections of them to dripping water. The seeds were placed sufficiently far away from the falling droplets that only sound waves would reach them. The team varied the size and height of each water droplet to mimic raindrops during light, moderate, and heavy rainstorms.

The sound of rain, recorded by MIT researchers from underwater, within a rain puddle in Massachusetts during a moderate to heavy rainstorm. 
Credit: Courtesy of the researchers

They also used a hydrophone to measure the acoustic vibrations created underwater by the water droplets. They compared these measurements to recordings they took in the field, such as in puddles, ponds, wetlands, and soils during rainstorms. The comparisons confirmed that their water droplets in the lab were generating rain-induced acoustic vibrations as in nature.

As they observed the rice seeds, the researchers found that the groups of seeds that were exposed to the sound of water were able to germinate 30 to 40 percent faster than the seed groups that were not exposed to rain sounds but were otherwise in identical conditions. They also found that seeds that were closer to the surface could better sense the droplets’ sounds and grow faster, compared to more submerged or more distant seeds.

These experiments showed that there is a connection between the sound of a water droplet and a seed’s ability to grow. The researchers propose that there may be a biological advantage to seeds that can sense rain: If they are close enough to the surface to respond to the sound of rain, they are likely at an optimal depth to soak up moisture and safely grow to the surface.

The team then worked out calculations to see whether the physical vibrations of the droplets would be enough to jostle the seeds’ microscopic statoliths. If so, this would point to the mechanism by which sound can directly stimulate a plant’s growth.

In their calculations, the researchers factored in a rain droplet’s size and terminal velocity (the constant speed that a falling object eventually reaches), and worked out the amplitude of sound vibration the droplet would generate. From this, they determined to what degree these vibrations in water or soil would displace, or shake a submerged or buried seed, and how a shaking seed would affect microscopic statoliths within individual cells.

Makris and Navarro found that the experiments they performed on rice seeds were consistent with their calculations: The sound of rain can indeed dislodge and jostle a seed’s statoliths. This mechanism is likely at the root of a plant’s ability to “sense” the sound of rain and grow in response.

“Brilliant research has been done around the world to reveal the mechanisms behind the ability of plants to sense gravity,” Makris notes. “Our study has shown that these same mechanisms seem to be providing plant seeds a means of perceiving submergence depths in the soil or water that are beneficial to their survival by sensing the sound of rain. It gives new meaning to the fourth Japanese microseason, entitled ‘Falling rain awakens the soil.’”

This work was supported, in part, by the MIT Bose Fellowship and the MIT Koch Chair.

Nature Climate Change, Published online: 22 April 2026; doi:10.1038/s41558-026-02615-y

It is important to assess the gap between national climate ambitions and the goal of limiting global temperature increase. This multi-model analysis shows that if net-zero pledges are implemented, meeting the 2 °C target is feasible, while increasing ambition and international cooperation is crucial.

MIT Comparative Media Studies/Writing Professor T.L. Taylor has been named a 2026-27 fellow at the Center for Advanced Study in the Behavioral Sciences at Stanford University (CASBS), a highly selective residential program that convenes scholars from a wide range of disciplines for a year of focused research, collaborative exchange, and intellectual engagement.

Professor Taylor — an ethnographer whose work sits at the intersection of sociology; media studies; and science, technology, and society — will be focusing on her current project exploring the rise of “immersion” in physical spaces as a contemporary cultural pursuit. While new entertainment undertakings like The Sphere in Las Vegas, interactive theater like Sleep No More, or Meow Wolf’s growing list of city-based immersive art projects have captured popular attention, Taylor’s project turns to their progenitor, a much older, more widespread instantiation of the immersive experience — the theme park.

Building on fieldwork undertaken over the last several years in Disney parks around the world, as well as interviews with both designers and attendees, she will be working on a new book that examines theme parks as sitting at the analytically rich intersection of design, infrastructure, and play. Extending her influential work on digital environments and online communities, this project bridges from game and virtual world studies to an examination of physical, immersive environments.

As in her prior work, Taylor treats leisure as an area of study worth taking seriously. Not dissimilar to gaming, there is a tendency to underestimate, or simply dismiss, the economic and cultural significance of these environments. In 2025, theme parks worldwide boasted 976 million visitors and the Walt Disney Co.’s “Experiences” division alone reported $10 billion in profit last year. Spaces of play and experiential engagement also regularly embody some of our most pressing contemporary conversations. Theme parks, she notes, are “at the heart of economic and media systems, technological development, and cultural imaginaries despite — like video games before them — often being dismissed as peripheral to ‘serious’ matters.”

The fellowship project frames theme parks as simultaneously operating on several levels: intentionally designed worlds “that invite people to step into them,” socio-technical infrastructures “meant to facilitate affective, embodied experience,” and as “playgrounds” that sometimes afford participation beyond corporate control and governance.

At the center of the work is a tension familiar from digital environments. “You invite people into a designed space,” she says, “but what happens when emergent culture collides with expectations of use?” One of the most interesting examples of this tension she has encountered in her fieldwork, for example, is of fan-organized live-action role-play within a theme park, a moment in which the environment functions as a playground for emergent experience within an otherwise tightly controlled commercial frame.

The CASBS fellowship will offer Taylor the time and intellectual cross-pollination needed to best situate, and even challenge, her new work. The program’s interdisciplinary cohort is drawn from across the social sciences, humanities, law, health, and other fields; it includes 36 scholars from 30 institutions. “It’s an amazing opportunity to work through the data and write in a really vibrant setting where conversation and cross-disciplinary engagement is at the heart of the experience” she says.

When you throw a ball in the air, the equations of classical physics will tell you exactly what path the ball will take as it falls, and when and where it will land. But if you were to squeeze that same ball down to the size of an atom or smaller, it would behave in ways beyond anything that classical physics can predict.

Or so we’ve thought.

MIT scientists have now shown that certain mathematical ideas from everyday classical physics can be used to describe the often weird and nonintuitive behavior that occurs at the quantum, subatomic scale.

In a paper appearing today in the journal Proceedings of the Royal Society, the team shows that the motion of a quantum object can be calculated by applying an idea from classical physics known as “least action.” With their new formulation, they show they can arrive at exactly the same solution as the Schrödinger equation — the main description of quantum mechanics — for a number of textbook quantum-mechanical scenarios, including the double-slit experiment and quantum tunneling.

Such mysterious phenomena, that could only be understood through equations of quantum mechanics, can now also be described using the team’s new classical formulation. In essence, the researchers have built an exact mathematical bridge between the classical, everyday physical world and the world that happens at dimensions smaller than an atom.

“Before, there was a very tenuous bridge that worked only for reasonably large [quantum] particles,” says study co-author Winfried Lohmiller, a research associate in the Nonlinear Systems Laboratory at MIT. “Now we have a strong bridge — a common way to describe quantum mechanics, classical mechanics, and relativity, that holds at all scales.”

“We’re not saying there’s anything wrong with quantum mechanics,” emphasizes co-author Jean-Jacques Slotine, an MIT professor of mechanical engineering and information sciences, and of brain and cognitive sciences. “We’re just showing a different way to compute quantum mechanics, which is based on well-known classical ideas that we put together in a simple way.”

To infinity and far below

Slotine and Lohmiller derived the quantum bridge while working on solidly classical problems. The researchers are members of the MIT Nonlinear Systems Laboratory, which Slotine directs. He and his colleagues develop models to describe complex behavior in problems of robotic and aircraft control, neuroscience, and machine learning. To predict the behavior of such systems, engineers often look to the Hamilton-Jacobi equation, which is one of the major formulations of classical mechanics and is related to Newton’s famous laws of motion.

The Hamilton-Jacobi equation essentially represents an object’s motion as minimizing a quantity called the action. Take, for instance, a simple scenario in which a ball is thrown from point A to point B. Theoretically, the ball could take any number of zigzagging paths between the two points. But the equation states that the actual path should be one where the ball’s “action” is minimized at every single point along that path.

In this case, the term “action” refers to the sum over time of the difference between an object’s kinetic energy (the energy that is generating the motion) and its potential energy (the object’s stored energy). The actual path that a ball takes between point A and B should then be a sequence of positions where the overall difference between kinetic and potential energy is minimized.

Slotine and Lohmiller were applying the Hamilton-Jacobi equation, and the principle of least action, to a number of classical mechanics problems with constraints when they realized that the equation, with some mathematical extensions, could solve a famous problem in quantum mechanics known as the double-slit experiment.

The double-slit experiment illustrates one of the weird, nonclassical behaviors that arises at quantum scales. In the experiment, two slits are cut out of a metal wall. When a single photon — a quantum-scale particle of light — is shot toward the wall, classical physics predicts that you should see a spot of light on the other side of the wall, assuming that the photon flew straight through either one of the holes, following a single path.

But experimentalists have instead observed alternating bright and dark stripes. The reality-bending pattern is a result of a quantum mechanical phenomenon by which a photon takes more than one path simultaneously. In this context, when a single photon is shot toward the wall, it can pass through both holes at the same time, along two paths that end up interfering with each other. The pattern of stripes that results means that the photon’s two interfering paths must be wave-like. The experiment therefore demonstrates how a quantum particle can also behave, however improbably, like a wave.

Since the discovery of quantum mechanics, physicists have tried to explain the double-slit experiment using tools from classical, everyday physics. But they’ve only ever been able to approximate the experiment’s results.

Even the noted physicist Richard Feynman ’39 found the task impossible. He assumed that one would have to consider and average over every single theoretical path that a photon could take, whether it be a straight line or any variation of a zigzagging path through either of the two holes. Such an exercise would require calculating an infinite number of possible zigzag paths, which all contradict the classical smooth paths one would expect. 

This last point is what Slotine and Lohmiller realized could be tweaked. Where classical physics assumes that an object must only take a single path from point A to B, quantum mechanics allows for an object to take multiple paths and multiple states simultaneously — a fundamental quantum property known as superposition.

The team wondered: What if classical physics could also entertain, at least mathematically, this notion of multiple paths? Then, they reasoned that an infinite number of paths wouldn’t have to be calculated. Instead, a much smaller number of “least action” classical paths might produce the exact same quantum result.

With this idea in mind, they looked back to the Hamilton-Jacobi equation to see how they might adapt its principles of least action to predict the double-slit experiment and other quantum phenomena.

“For a while we thought it was a little too good to be true,” Slotine says.

A particle’s destiny is in its density

In their new study, the team adds another ingredient of classical physics: “density,” which is, essentially, a probability that a given path is taken.

“We think of density in terms of fluid dynamics,” Lohmiller explains. “For the double-slit experiment, imagine pumping a hose toward the wall. What will happen is, most of the water will hit the center, but some droplets will also go toward the sides. A high density of water at the center means there is a high probability of finding a droplet along that path. And there will be a distribution, which we can compute.”

He and Slotine tweaked the Hamilton-Jacobi equation to include terms of density and multiple least action paths, and applied it to the double-slit experiment. They found that with this formulation, they only had to consider two classical paths through the two slits, as compared to Feynman’s infinity of zigzag paths. Ultimately, their calculations of classical density and action produced a wave function, or distribution of most probable paths that a photon could take, that was exactly the same as what was predicted by the Schrödinger equation, which is the central equation used to describe quantum-mechanical behavior.

“We show that the Schrödinger’s equation of quantum mechanics and the Hamilton-Jacobi equation of classical physics are actually identical given a suitable computation of density,” Slotine says. “That’s a purely mathematical result. We’re not saying that quantum phenomena happens at classical scales. We’re saying you can compute this quantum behavior with very simple classical tools.”

In addition to the double-slit experiment, the researchers showed the reworked equation can also predict other quantum mechanical behavior, such as quantum tunneling, in which particles such as electrons can pass through energy barriers that would not be possible according to classical physics. They could also derive the exact quantum wave of the electron in a hydrogen atom from the classical orbit of a planet. Finally, they revisited from this perspective the famous Einstein-Podolski-Rosen experiment, which started the modern study of quantum entanglement.

The researchers envision that scientists could use the new formula as a simple method to predict how certain quantum systems and devices will perform.

“There could be important implications for quantum computing, where quantum bits have these nonlinear energies that physicists must approximate, or for better understanding problems involving both quantum physics and general relativity,” Slotine offers. “In principle at least, we should now be able to characterize this quantum behavior exactly, with simple classical tools, and show that it’s not so mysterious after all.”

Mitali Chowdhury ’24 and Christina Kim ’24 have been selected as 2026 Gates Cambridge Scholars. The highly competitive fellowship offers fully funded opportunities for postgraduate study in any field at Cambridge University in the U.K. Kim is a second-time Gates Cambridge Scholar.

MIT students interested in the Gates Cambridge Scholar program should contact Kim Benard, associate dean of distinguished fellowships in Career Advising and Professional Development.

Mitali Chowdhury

Chowdury graduated from MIT with a BS in biological engineering and minors in both urban planning and environment and sustainability. Chowdhury has had a longstanding interest in reducing inequities in global health. At MIT, she pursued research in point-of-care diagnostics to identify and treat disease with accessible biotechnologies. She also helped develop low-cost testing for bacterial contamination in water in South Asia.

Chowdury currently works at a startup advancing sequencing-based diagnostics. At Cambridge University, she will study for MPhil and PhD degrees in the Centre for Doctoral Training in Sensor Technologies. Her research will focus on CRISPR-based diagnostics to address antimicrobial resistance and expand equitable access to care.

Christina Kim

After graduating from MIT with a bachelor’s degree in chemistry and biology, Kim worked as a researcher in women’s health at the Wellcome Sanger Institute in Cambridge, U.K. 

As a 2025 Gates Cambridge Scholar, Kim pursued an MPhil in research at the institute, focusing on using bioinformatics and tissue engineering to design novel in vitro models. Her second Gates Cambridge scholarship will fund her PhD studies.

In a world leaning away from globalization, governments face a tough choice: Should they block dominant foreign companies to protect local businesses, or welcome them in hopes of fast-tracking economic growth and modernization? 

In his recently published book, “Traders, Speculators, and Captains of Industry: How Capitalist Legitimacy Shaped Foreign Investment Policy in India” (Harvard University Press, November 2025), Jason Jackson, associate professor in political economy and urban planning in the MIT Department of Urban Studies and Planning, explains that these policy decisions aren’t just math, but long-standing and often heated moral debates over how businesses should conduct themselves, and who they serve.

Jackson argues that morality has a long history in economics and deserves more attention because, while ever-present in economic policy discourse, moral beliefs are often under-recognized or underappreciated.

“India is an exemplary case of ways in which moral beliefs shape economic policy decisions,” says Jackson. “But at the same time, I think it’s representative of a general feature of capitalism. It’s the perfect case.”

Jackson’s focus on India for this book stems from his interest in industrial policy and the politics of international development. Multinational firms have long been a source of controversy. They are seen as bringing two crucial resources to developing countries: finance and technology. However, while multinationals are potentially valuable contributors to economic development through the mechanism of foreign direct investment (FDI), they can also be monopolistic, dominating local industries and displacing domestic firms.

This long-standing tension in foreign investment policy became the backdrop for several emerging markets in developing countries — Brazil, Russia, India, China, and South Africa (BRICS) — in the early 2000s. India was growing at an extremely high level — 6-7 percent annually — and Indian companies were doing well, including those in industries that were seen as key to development, such as autos. Jackson wanted to understand why Indian companies were holding their own relative to foreign firms, which dominated more manufacturing in other places, and planned to focus on the period from the 1980s through the 2010s that coincides with the period of economic liberalization in India and, more broadly, with globalization. But while conducting field work, Jackson noticed that in describing how they made industrial policy decisions, Indian policymakers drew distinctions between firms that were fashioned in moral terms. There were some firms that policymakers believed would invest in technology and provide good jobs, and other firms — both foreign and domestic — seen as exploitative and not interested in engaging in activities that would advance economic growth and industrial transformation.

“I realized these distinctions had deep salience,” says Jackson. “My interlocutors would describe firms — especially foreign firms they saw as simply trading, or as exploitative — as ‘New East India’ companies, referencing the famous East India Company that was the governance authority in colonial India, but had been defunct for more than 150 years. That forced my research to become more historical, increasingly relying on archival work to make sense of these moralized distinctions between different types of business actors, whether foreign or domestic, and to understand how these beliefs became so powerful across Indian society.”

“Moral categories of capitalist legitimacy”

Jackson says there are several ways in which social scientists think that policymakers make decisions. One view considers the competing interest groups policymakers must negotiate with, in which case outcomes may depend on one group having more influence or power than others. Another approach assumes these individuals make decisions based on self-interest, particularly when their choices are perceived as corrupt.

“But what I found is that neither of these approaches gave enough credence to the ways in which policymakers in India grapple with quite technical and complex policy decisions regarding the type of development they want to promote in their country, and the types of companies they thought could help to achieve their development goals.” says Jackson. “Therefore, I was more interested in trying to understand what kind of ideas and beliefs animated their decision-making.”

What Jackson found was that Indian policymakers viewed both foreign firms and local Indian companies through what he terms “moral categories of capitalist legitimacy.” Would these firms invest in productive technologies? Would they provide good employment for the local population? Or would they be exploitative? These criteria were not only applied to multinational corporations. Even Indian family-controlled business groups were evaluated as to whether the gains accrued stayed within the confines of the extended family or whether they provided broader societal benefits. 

Coca-Cola goes to India

The story of Coca-Cola in India is an example of the tension experienced with regulating foreign investment where multinational companies were seen as exploitative. The company made its initial foray into India in the 1950s, and over the next two decades its reach became extensive. In the late 1970s, India’s Minister of Industry George Fernandes was visiting a village in Bihar — a state with one of the highest levels of poverty — when he asked for a glass of water. Instead, he was told the water was not suitable to drink, and was given Coca-Cola.

“This struck Fernandes as deeply problematic,” says Jackson. “He later recalled thinking that ‘after 30 years of freedom in India, our villages do not have clean drinking water, but they do have Coca-Cola — which, of course, is made with purified water, so safe to drink. How was this possible?’” Fernandes returned to his office in New Delhi determined to do something about it.

Just a few years earlier, India had passed a law, the Foreign Exchange Regulation Act (FERA), which required foreign companies to dilute their equity to no more than 40 percent. The law was explicitly designed to encourage technology transfer, but Coca-Cola had not complied. Fernandes told Coca-Cola that it had to take on an Indian partner or it would have to leave. Coca-Cola chose the latter. In the following year, IBM was also kicked out of India when it similarly balked at complying with FERA and sharing its technology.

“These companies were very much seen in the mold of the East India Co.,” says Jackson. “A firm comes from abroad and extracts resources from India while giving little benefit to the country. These are all very clearly morally coded beliefs that played a crucial role in these policy decisions.”

With Coca-Cola out of India, the beverage market became wide open, and several Indian companies emerged. Thums Up, an Indian cola brand — founded by Ramesh Chauhan ’62 — took off and became the dominant cola by the 1980s. Chauhan developed its own unique formula independently.

In 1991, India accelerated its economic liberalization, especially around FDI, and FERA’s standards were diluted. Coca-Cola returned to India, again without a partner. Other major brands, including Pepsi, had also entered the market. By then, Thums Up had a market share in India of well over 80 percent, but, concerned with its ability to compete in a war between the deep-pocketed American multinational giants, Thums Up sold out to Coca-Cola for $60 million in 1993, a figure that was later deemed to be small.

Trader, speculator, or captain of industry?

Jackson says that in India, there were two competing interpretations of this story. In one version, Fernandes kicking out a global multinational firm was seen as a developing country establishing its economic sovereignty by making a bold policy decision and “risking all kind of geopolitical blowback that might follow from the U.S.,” says Jackson. “In this view, the Indian government’s bold move allowed local entrepreneurs and local companies like Chauhan and Thums Up to emerge.”

Yet an important counter narrative emerged that challenged the view that companies like Thums Up and figures like Chauhan are enterprising entrepreneurs.

“Maybe they just took advantage of protectionism to form a company and make some money,” says Jackson. “So rather than being an intrepid captain of industry, observers wondered whether maybe Chauhan was ‘simply a trader’ who took advantage of policy protection, but sold out as soon as the market became competitive.”

Later developments added some credibility to this view. Ironically, Coca-Cola was unable to remove Thums Up and Limca, another soda brand from Chauhan’s company, from its product lineup, and both remained extremely popular and widely consumed. This suggested to many observers that Thums Up could have survived the cola wars had it not sold out to the American multinational. The public had acquired a taste for the distinctly Indian beverages that Chauhan had created.

“This narrative encapsulates this kind of tension policymakers face: If we provide policy support to our enterprising entrepreneurs and they thrive, will they also do well for the country? Or are they simply opportunists who will take advantage of policy support in ways that benefit themselves but have little broader benefits to the country,” says Jackson.

This episode was just one of dozens of instances of conflicts between Indian companies and multinational firms in the liberalizing 1990s and 2000s, which the government was often compelled to adjudicate. Throughout this period, the question persisted: How would policymakers identify the business figures who could be agents of industrial development and economic transformation, whether foreign or domestic? 

Ramesh Chauhan for one continued an enterprising path. He turned his attention to the bottled water industry in India and his brand — Bisleri — remains one of the country’s leading bottled water brands today.

The MIT Plasma Science and Fusion Center (PSFC) showcased its high-temperature superconducting (HTS) magnet technology, essential for fusion energy and increasingly relevant to superhot geothermal applications, to Representative Jake Auchincloss (D-Mass) during his March 12 visit.

High-field electromagnets are required to confine plasma in fusion reactors, and PSFC’s HTS technology enables dramatically higher magnetic fields, allowing for more compact and cost-effective reactor designs. The same HTS technology can also be applied to gyrotrons, which are high-power microwave sources that operate more efficiently at higher frequencies, enabling new energy applications.

One such application is millimeter-wave drilling for superhot geothermal energy, where microwave energy is used to heat, melt, or vaporize rock. Because drilling rates scale with input power and costs increase less rapidly with depth than in conventional drilling, this approach could overcome key economic barriers to accessing deep geothermal resources and enable scalable, baseload clean energy.

During Auchincloss’ recent visit to PSFC, MIT researchers explained the technology development and testing underway to take millimeter-wave technology from laboratory to the real world.

“I visited MIT’s Plasma Science and Fusion Center to learn more about the science and engineering necessary to make this technology work at utility scale. Superhot geothermal uses microwaves to melt rock, going much deeper and hotter than is possible with contact drilling. This can generate clean, baseload power in America east of the Rocky Mountains, where the geology has conventionally not been suitable for industrial geothermal,” says Auchincloss.

“The technology is still years away from working in a state with ‘cool rock’ like Massachusetts, but the ultimate benefit for the Bay State could be tremendous. In addition to lower utility bills, a new industry with good jobs could thrive here. Indeed, this is already starting to happen, as spinouts from MIT — and the suppliers for these spinouts — are already setting up shop in Massachusetts,” he says.

Staff from MIT startup Quaise Energy participated in Auchincloss’ visit to PSFC. Quaise Energy, which has an office in Cambridge, completed a successful drilling demonstration using gyrotron-based millimeter-wave technology last fall in Texas. One of the first rounds of MIT Energy Initiative (MITEI) seed funding provided support for PSFC’s initial development of the technology in 2008.

Superhot rock geothermal energy refers to tapping temperatures of nearly 400 degrees Celsius to generate large amounts of electricity. Conventional drilling approaches can fail at the great depths (several kilometers) and high temperatures required to reach this geothermal resource. The millimeter-wave drilling technology invented at PSFC and being commercialized by Quaise Energy could be faster and more effective than conventional drilling, especially at high temperatures and great depths. PSFC is planning a new laboratory facility to further study millimeter-wave drilling and test improvements to the existing technology.

“This initiative will leverage MIT’s extensive capabilities in geophysics, geochemistry, millimeter-wave technology, and AI, along with existing infrastructure including power, water, and experimental facilities. The goal is to anchor next-generation geothermal innovation within an integrated academic-industry ecosystem, accelerating both technology maturation, de-risking deployment pathways, and developing the needed workforce,” says Steve Wukitch, the interim director and a principal research scientist at PSFC.

Oliver Jagoutz, the Cecil and Ida Green Professor of Geology and director of the Earth Resources Laboratory (ERL), also participated in the representative’s visit to PSFC. ERL is teaming with PSFC on the planned laboratory facility for testing millimeter-wave drilling under representative pressure and temperature conditions and on realistic rock samples.

Earlier in March, MITEI’s Spring Symposium, titled “Next-generation geothermal for firm power,” explored the current state of the geothermal industry, innovative technologies, and the opportunities ahead. During the symposium, Wukitch served as moderator of a panel on drilling advances and described the planned PSFC laboratory facility for millimeter-wave testing, and Quaise Energy’s Matt Houde described the company’s recent advances and future plans. On the following day, MITEI and the Clean Air Task Force co-hosted a gathering of MITEI member companies, next-generation geothermal companies, and investors for a GeoTech Summit, titled “Accelerating geothermal technology, projects, and deal flow.”