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.

Last week, Instagram ended its opt-in, and therefore rarely used, end-to-end encryption feature. Years after publicly promising to provide the privacy protections of end-to-end encryption across its platforms by default, it instead gave up on that technical challenge. Now, we've all lost an option for safer conversations on one of the biggest social media platforms in the world.

In an announcement in 2023, Meta bragged about how it had successfully encrypted Messenger, and teased that Instagram was in progress. Even before then, they’d talked about how important encryption was in Messenger and Instagram in a white paper published in 2022, stating: 

We want people to have a trusted private space that’s safe and secure, which is why we’re taking our time to thoughtfully build and implement e2ee by default across Messenger and Instagram DMs.

So where did the reversal come from? In a statement, Meta claimed that, “Very few people were opting in to end-to-end encrypted messaging in DMs.” This isn’t all that surprising, as turning it on was an optional four-step process that few people knew about. Defaults matter, and Meta’s choice to blame people for failing to opt into this feature is proof of how much. In that same statement, the company pointed people to WhatsApp for access to encrypted messaging. Yet if Meta truly wanted people to have a trusted private space to communicate, it would meet them everywhere they are: on WhatsApp, on Messenger, and on Instagram.

But at least Meta was straightforward about the fact that it will not continue to support or work on this feature. That's rare. Most tech company promises aren’t broken explicitly, they just remain undelivered long enough to be forgotten. 

This is particularly disappointing as other companies take even bigger swings, like Google and Apple working together to implement end-to-end encryption over Rich Communication Services (RCS), and Signal’s continued work to make its app simpler and easier to use for everyone.

Meta abandoning this principle is disheartening, especially as we are still waiting for other promised features from the company, like end-to-end encryption in Facebook Messenger group messages. Instead of blaming users for not using these sorts of features and then abandoning the promise of delivery, Meta—and other tech companies—should start by enabling strong privacy protective features by default.

This week, Apple released iOS 26.5, an update that supports end-to-end encryption for Rich Communication Services (RCS), meaning conversations between Android and iPhone will soon be encrypted in the default chat apps. This has been a long time coming, and is a welcome delivery on a promise both Google and Apple made.

With this update, conversations that take place between Apple’s Messages app and Google Messages on Android will be end-to-end encrypted by default, as long as the carrier supports both RCS and encrypted messages (you can find a list of carriers here). RCS messages are a replacement for SMS, and in 2024 Apple started supporting it, making for a marked improvement in the quality of images and other media shared between Android and iPhones. 

Now, those conversations can also benefit from the increased privacy and security that end-to-end encryption offers, making it so neither Google, Apple, nor the cellular carriers have access to the contents of messages. This feature comes courtesy of both Apple and Google supporting the GSMA RCS Universal Profile 3.0, which implements the Messaging Layer Security protocol for encryption. Metadata will likely still be collected and stored for these conversations, making alternatives like Signal still a better option for many conversations. Likewise, if you back up those conversations to the cloud, they may be stored unencrypted unless you enable Advanced Data Protection on iOS (Google Messages end-to-end encrypts the text of messages in backups, but not the media, so we’d like to see a similar offering as ADP on Android). Still, this is a significant step forward for the privacy of millions of conversations worldwide.

End-to-end encrypted RCS messaging is still marked as beta on Apple devices, likely because the rollout is dependent on carriers as well as the Android phone running the most recent version of Google Messages. 

It might take some time before you get this feature in your chats and until you do, remember that the conversations are not protected with end-to-end encryption. But once everyone in the conversation is on the right software version and the carrier support is implemented, you will see a lock icon and the text, “Encrypted” at the top of the conversation for any chats you have over RCS, as seen here:

We applaud Apple and Google for getting this across the finish line and Encrypting It Already! More companies should take these sorts of difficult but necessary steps to protect the privacy of our conversations and our data.

Osama Khalid was just twelve years old when he began contributing to Wikipedia Arabic. In the height of the blogging era, he became a prolific blogger, publishing writings on his home country of Saudi Arabia, meetups he attended, and his opinions and observations about open source technology and freedom of expression. He advocated for internet freedom, contributed time and translations to various projects—including EFF’s HTTPS Everywhere—and was a thoughtful presence at the conferences he attended around the world…all while training to become a pediatrician.

In July of 2020, he was detained amid a wave of arbitrary arrests carried out by the Saudi authorities during the Covid-19 lockdown and initially given a five-year prison sentence. That sentence was later increased on appeal to 32 years, then reduced in 2023 to 25 years, and again to 14 years this past September. In a joint letter that we signed on to in April, the Saudi human rights organization ALQST, which has been leading the campaign for Osama’s release, wrote: “The huge discrepancy between sentences handed down at different stages in the case underscores the arbitrary manner in which sentencing is carried out in the Saudi judicial system.”

So, what was his “crime”? Sharing information online that conflicted with official narratives. Osama’s Wikipedia contributions included pages on critical human rights issues in Saudi Arabia, including the treatment of women’s rights activist Loujain al-Hathloul (herself an EFF client) and Saudi Arabia’s infamous al-Ha’ir prison. His blog, which has since been taken offline, included articles such as one criticizing government plans for the surveillance of encrypted platforms.

Over the years, we’ve campaigned for the release of a number of individuals imprisoned for their speech. Our contributions to the campaigns of Ola Bini, the Swedish software developer who has been targeted by the government of Ecuador for the past seven years, and Alaa Abd El Fattah, have had real impact. These cases are reminders that attacks on free expression are rarely confined to borders: governments around the world continue to use vague cybercrime laws, national security claims, and politically motivated prosecutions to silence critics, technologists, journalists, and activists.

Supporting these two—and others we’ve highlighted in our Offline project—has never been about defending only individuals. It has also been about defending the principle that writing code, sharing ideas, criticizing governments, and organizing online should not be treated as crimes. Public pressure, international solidarity, legal advocacy, and sustained campaigning can shift the political cost of repression—and, in some cases, help secure meaningful protections for those targeted.

That’s why we’re highlighting Osama’s case and will continue to work with partners including ALQST to advocate for his release. Osama Khalid, like so many human rights defenders, journalists, and internet users detained by the Saudi government, deserves to be free.

Internet shutdowns are devastating for human rights. When people are disconnected from the internet and digital services, it impacts all aspects of their life—from accessing essential information, to seeking medical care, or communicating with loved ones, both in that country and externally. But on January 8th, 2026, the government of Iran shut down internet communications for the entire country as a rebellion threatened to topple the authoritarian government. The government then proceeded to execute as many as 656 dissidents over the next 3 months, though the actual number could be much higher. Which is part of the point: shutdowns often precede government acts of violence. 

Iran’s shutdown was hardly an isolated incident. Earlier this month, the U.S. military invaded Venezuela and kidnapped the Venezuelan president shortly after US cyber forces shut down all internet access and power grids for the capital city of Caracas. India routinely shuts off internet access in the Kashmir region, and Syria shut down internet communications as many as 73 times, most recently in 2025. Even the UK recently had a localized temporary internet shutdown. At the time of this writing there are 14 ongoing internet shutdowns worldwide.  

Government shutdowns aren’t the only reason an entire region or country might lose internet access. Hurricanes, earthquakes, and wildfires can take out internet connections in many regions of the world, and will only increase as climate change ramps up. They can completely disable the communications infrastructure relied upon by victims, their families, first responders, and disaster relief efforts. Having an alternate way to communicate in such times can save lives.  

One way to limit the impact of such shutdowns is to prepare in advance by setting up systems and structure for circumvention and resiliency. 

To keep people connected during internet shutdowns and blackouts, communication networks must be operational before and after the disaster or shutdown. To be effective, they must be widespread so that people can get access to them reliably, and they must be usable by a majority of the community. And any viable solution must be accessible and sustainable on a community level, not just to people with vast financial resources or technical knowledge. You shouldn’t have to be a tech wizard to be able to communicate with your neighbors!

Radios

There are many ways for a community to build their own disaster resilient communications. Radios, for example, are cheap, decentralized, and resilient. Many people with moderate technical skill have set up Meshtastic repeaters. Meshtastic is a way to use a common unlicensed radio spectrum and a technology called LoRA to have peer-to-peer decentralized communications with people in your neighborhood or city. When you buy a Meshtastic device (cheap ones cost around $20) you can link it to your phone and send text messages to people in your area without ever touching the telephone network or the internet. Messages are delivered directly from person to person over public radio waves.

There is also amateur radio, also known as ham radio, which has been used in disaster communications for decades. Ham radio requires a license, but allows you to communicate farther than Meshtastic, using repeaters or even bouncing signals off the stratosphere to talk to people on the other side of the planet or even on the International Space Station. It is even possible to access the internet over ham radio. 

Peer-to-peer messaging apps 

Another option for internet communication during a shutdown is peer-to-peer messaging apps. One such project,called Briar, uses the Bluetooth functionality on phones to route messages from device to device until they reach their destination, even in instances where there is no internet. However, Briar faces the same problems many mesh projects do: almost nobody has the app installed and it’s difficult to use. If a mesh chat app isn’t already widely installed before an internet shutdown, it’s going to be even harder to get people to install it en masse once the shutdown starts. 

A similar effort called bitchat has recently gained some attention. Bitchat is a peer-to-peer chat system that routes over Nostr, Tor, and Bluetooth. It is unfortunately tainted in many people’s eyes by being a project by former Twitter CEO Jack Dorsey, but it is open source and runs on both Android and iOS. It was used with some success in Iran during the latest internet shutdown. 

Another option is Delta Chat, which uses PGP for encryption and email for routing, while still being much simpler to use than either technology. Delta Chat is highly regarded in Iran for its ability to route a message through even the tiniest sliver of email access.

Satellite internet 

Satellite internet is an internet connection that uses a connection to a satellite dish to reach the internet, such as Starlink. Since there are no wires and no physical connection to infrastructure, satellite internet is harder to shut down. Satellite internet has therefore been used in many cases to circumvent internet shutdowns, with people sharing bandwidth with their neighbors. Satellites are harder for governments to shut down unilaterally.  Unfortunately when the satellites are owned by tech oligarchs, such as Starlink (owned by Elon Musk), or by allied governments, the owners of those satellites may willingly shut down the network anyway. 

Dreaming of a better future

Ultimately an app that is already widely being used would be the best option for shutdown resistant communication. Imagine if WhatsApp or Signal could fall back to mesh networking over bluetooth or wifi. Even better, imagine if our phones all had LoRA built in so we could have more effective mesh networks! What if our phones all had a connection to a satellite constellation run by an international coalition of hackers? We can dream of a better world and we can build it. 

We can’t rely on tech oligarchs to save us, especially when these same companies and governments are the ones to sever our access to the internet and telecommunications. This is why it's important to set up communication mechanisms before a disaster happens. 

As hackers, it's important for us to build these tools and infrastructure of decentralized communication, to help people learn how to use them, and to set up networks before disaster strikes. Get together with others in your city and start setting up resilient off-grid networks and building community now. 

Before you download or use any of the tools mentioned in this guide check with a lawyer in your jurisdiction or country and make sure you understand what legal risks you might be taking on. 

A previous version of this article appeared in the Spring 2026 issue of 2600 magazine. 

This is the worst Linux vulnerability in years.

TL;DR

• copy.fail is a Linux kernel local privilege escalation, not a browser or clipboard attack. Disclosed by Theori on 29 April 2026 with a working PoC.
• It abuses the kernel crypto API (AF_ALG sockets) plus splice() to write four bytes at a time straight into the page cache of a file the attacker does not own.
• The exploit works unmodified across Ubuntu, RHEL, Debian, SUSE, Amazon Linux, Fedora and most others. No race condition, no per-distro offsets.
• The file on disk is never modified. AIDE, Tripwire and checksum-based monitoring see nothing. ...

Cameron Hamilton was acting agency chief last year until he was fired amid clashes with Kristi Noem.

Analysts say private companies have an opportunity to insure against flood damage following recommendations to narrow the National Flood Insurance Program.

The fight could result in requirements for government officials to consider greenhouse gas emissions when approving fossil fuel projects.

Developers could start building "non-emitting" components ahead of air permitting under Administrator Lee Zeldin's proposal.

The U.K. launched its own carbon market following Brexit, which has traded at a discount to the EU equivalent.

A total of 50 countries had record solar imports from China in March, with Nigeria recording a 519 percent surge from February and notable spikes in Malaysia, Ethiopia, and Kenya.

In recent years, illegal gold mining, logging and drug trafficking have spread deeper into remote rainforest regions in countries including Brazil, Peru, Colombia and Ecuador.

The South American country is grappling with fuel shortages and a presidential decree that ended long-standing fuel subsidies, effectively doubling the cost of gasoline.

Nature Climate Change, Published online: 12 May 2026; doi:10.1038/s41558-026-02582-4

Multinational investment is vital for African growth, yet it drives higher rates of forest loss than local industry. Researchers now suggest that home-country laws should hold global firms accountable for their environmental footprint abroad.

Nature Climate Change, Published online: 12 May 2026; doi:10.1038/s41558-026-02637-6

Developing countries are faced with trade-offs where multinational corporations could help local economic growth, but also cause more environmental damage than domestic counterparts. This research confirms such negative effects and discusses how better governance could reduce detrimental outcomes.

Nature Climate Change, Published online: 12 May 2026; doi:10.1038/s41558-026-02638-5

The authors use 34 years of seed harvest data from Poland, covering over 40,000 observations and five common species, to understand the impacts of climate change on tree fecundity. They show reduced fecundity across all species, with hotter summers as the dominant driver.

Despite regional variability in climate, electricity sources, congestion, and the wide variation in individual driving patterns, electric vehicles generate less greenhouse gas emissions and do not cost more than comparable gas-powered vehicles for drivers and vehicle fleet owners in most parts of the United States, according to a new study by MIT researchers.

The team’s approach captures many key factors that contribute to regional and individual differences in the life-cycle emissions and ownership cost of electric vehicles, including meteorological data, the distance and duration of trips, and fuel prices.

To paint a fuller picture of emissions and costs than was previously available, the researchers sourced data from thousands of U.S. zip codes and drilled down to the level of individual drivers within those locations. Their study considers time-averaged fuel prices so as not to be overly influenced by fluctuations in prices at any one point in time. They finalized their analysis at the end of 2024 and early 2025.

Their results indicate that a person’s driving behaviors can matter as much as regional factors like the local electricity mix when it comes to the emissions savings of an electric vehicle, compared to a similar gas-powered vehicle. In most locations, a battery-electric vehicle reduces emissions between 40 and 60 percent, with larger impacts in urban areas. 

They also found that colder climates do not reduce overall emission benefits as much as some media reports assume.

The researchers utilized this detailed analysis to update a public tool they previously developed, carboncounter.com, which enables individuals to compare the life-cycle emissions and total ownership costs of nearly any car on the market. A new version of carboncounter.com is also being released today.

“There are a lot of statements being thrown around, like that electric vehicles don’t reduce emissions very much in cool climates, and we wanted to analyze these factors systematically and evaluate these statements against one another simultaneously. Rather than simply asking, ‘Are EVs better?’, this paper helps answer ‘better for whom, and under what conditions?’” says Marco Miotti PhD ’20, a senior researcher at ETH Zurich who completed this research while a graduate student in the Institute for Data, Systems, and Society (IDSS) at MIT. 

He is joined on the paper by senior author Jessika Trancik, a professor in IDSS. The research appears today in Environmental Research Letters.

A holistic approach

Many prior studies that compare emissions and costs of electric vehicles (EVs) to combustion-engine vehicles cover a few factors, like the amount of renewable energy in the grid and how gas prices impact affordability, Miotti says.

“To our knowledge, there have been few efforts so far that bring all these factors together. But if someone wants to buy a car and have a better understanding of the factors that affect emissions and costs, this holistic approach is important,” he adds.

The researchers focused on two types of EVs: battery-electric vehicles, which only operate on electricity, and plug-in hybrid electric vehicles, which also have a combustion engine that works in tandem with the battery to optimize fuel savings.

The team expanded and improved a set of previously developed vehicle cost and emissions models to incorporate a wider variety of factors and data types.

For instance, they refined an existing model that estimates energy use and gas mileage so it could capture more nuances of local climate variability. 

“But the real effort was not just in extending these different models, but in bringing together all these different data and making them work with the models in a consistent manner,” Miotti says.

The team sourced data on a wide variety of factors for each U.S. zip code, such as typical drive cycles, the amount of traffic, local gas and electricity prices, makeup of the regional electricity mix, meteorological profiles, and more. They used statistical approaches to amalgamate different types of data. 

For example, the team used a probabilistic matching technique to combine data on how often people drive, which was drawn from nationwide travel surveys, with more detailed GPS data that includes factors like drivers’ acceleration patterns and the distance they usually drive on each day of the week.

The researchers designed their analysis to focus on the spatial picture of emissions and costs, based on U.S. zip codes, while simultaneously considering the impact of the size and features of each specific vehicle model.

“At the end of the day, it’s the vehicle and fleet owners who make decisions about vehicle purchases. So, we wanted to make sure to consider their wide-ranging individual perspectives rather than simply performing a region-by-region comparison,” says Trancik.

Lower emissions, comparable costs

In the end, their modeling framework revealed that all factors they analyzed matter about equally in determining emissions-reduction potential of EVs compared to internal combustion vehicles. 

EVs reduce emissions the most in areas with a cleaner electricity mix, denser traffic, higher annual travel distances, and a mild climate, in decreasing order of importance. In each area, emission reductions increase for drivers who drive more often, drive larger vehicles, and are more frequently stuck in traffic. 

In a colder area like North Dakota, fuel economy of battery-electric vehicles might be reduced by as much as 50 percent on a particularly frigid night, but the effect on annual emission benefits is minimal. 

“We even did a sensitivity study to see if the range is reduced in very cold climates, and we found that, even in the most unfavorable conditions, EVs still reduce emissions by a substantial amount,” Miotti says.

On the cost side, the models show that, in most places across the U.S., EVs are competitive with comparable combustion-engine vehicles in terms of lifetime ownership cost, even without clean vehicle tax credits. And in areas where electricity is relatively affordable, battery-electric vehicles tend to cost less than their plug-in hybrid or combustion-engine counterparts.

In the future, the researchers want to expand this analysis to include a temporal dimension, so the framework also considers how changes in vehicle, fuel, and electricity prices affect emissions and costs over time. 

“While we found that the electricity mix is a big driver of the spatial variation in emissions savings of EVs, the electricity grid is decarbonizing everywhere. As that happens, emissions savings across space will become more homogenous for EVs, but the differences across one driver to another will remain,” Miotti says.

They could also use the framework to explore regions outside the United States or incorporate data on hybrid-electric vehicles that cannot be plugged in.

This work was funded, in part, by the MIT Martin Family Society of Fellows for Sustainability.

A crepe cake.

That’s how Camille Cunin describes the polymer-metal “sandwiches” that became a highlight of her doctoral thesis at MIT’s Department of Materials Science and Engineering (DMSE). Over close to five years, these composites were a key component of her research on bioelectronics — devices designed to interface with the human body.

Cunin completed her PhD in February — she’ll attend commencement in May — but traces her interest in bioelectronics to a formative summer internship at Massachusetts General Hospital (MGH) in Boston in 2019. There, she saw a patient with Parkinson’s disease struggle to swallow a tethered “capsule” intended to function as an exploratory gut probe. The device failed, and the gap between lab-based design and real life became all too apparent.

The incident validated the career path Cunin had already begun to pursue: to make usable products that have a positive impact on people’s lives. It’s a purpose that hasn’t gone unnoticed. “Some might be happy with a sketch of a concept and no actual demonstration, but Camille has a remarkable ability in that she wants to do materials science that can translate to real-world applications,” says her advisor, Aristide Gumyusenge.

Building blocks

The daughter of a psychologist and an engineer, Cunin grew up in Paris, encouraged by her parents to be curious about the world around her. LEGO blocks featured prominently in her childhood. When her father found some old lights in a box in the attic, 9-year-old Camille strung them to decorate her LEGO castle by creating a circuit, complete with a fuse.

Strong grades earned her a spot in France’s elite post-secondary preparatory classes for admission to the country’s prestigious grandes écoles. The intensive and competitive prep classes, however, left Cunin with a sour aftertaste — “for a while I hated science, because the environment was too competitive for me,” she says — and a bit rudderless in engineering school.

It was the research internship thousands of miles from home, at MGH — part of her master’s in engineering at École Centrale de Marseille in France — that rebooted her love of science. The open-ended nature of research appealed to her curiosity and helped her regain confidence in solving problems. She was delighted to be accepted at MIT DMSE for her doctoral studies. “In Boston, I thrived in collaborative environments, and it felt like anything was possible,” she says.

Stretching possibilities

Before starting at MIT, Cunin had a wealth of interdisciplinary experience, from internships and her graduate studies. Unsure about how to slot it all together, she was looking for an advisor at a time when Gumyusenge, Henry L. Doherty Career Development Professor in Ocean Utilization and assistant professor of materials science and engineering, was himself just establishing his lab at DMSE.

When Gumyusenge shared plans to work on projects to turn biological signals into electronic data, Cunin was excited to build on her prior research in biomedical devices. “Here was a chance to fine-tune the materials and to optimize the performance of bioelectronic devices. I really felt I could leverage my strengths in Aristide’s lab,” she remembers.

Gumyusenge proved a great fit, supporting Cunin’s broad research ambitions while helping her shape and integrate them into a coherent doctoral project. She tackled everything from developing and characterizing new materials to fabricating transistors and learning surgery to test the devices in animal models. The final dissertation focused on organic transistors, which boost body signals for easier detection in soft electronics.

Biological signals, like those from nerves in the body, are weak, and transistors amplify them so they can be measured. The challenge with developing bioelectronic devices is that traditional components are hard and rigid, while the human body is not. Devices must perform as needed and be soft and flexible to avoid irritating human tissue.

Another complication: Biological processes involve charged ions moving through fluids, while electronics rely on electrons moving through materials. Before transistors can amplify signals, they first have to convert biological signals into electronic ones for circuits to pick up.

Cunin’s transistor design needed to solve two major challenges: first, to facilitate the movement of electrons and ions in the “channel,” the hub of all signal activity, in soft, hydrated environments; and second, to be pliable enough to conform to the human body.

It was no easy task.

Elegant simplicity

Gumyusenge’s lab typically uses chemistry to modify material behavior, but Cunin took a different tack. Since polymers are soft, and metals are good conductors, she looked to the classic French pastry mille-feuille, which inspired the layered design: thin metal sheets sandwiched between layers of porous elastomer. The metal stretches with the elastomer and forms microcracks. Charges get trapped in the cracks but can still flow through the stack, while the elastomer’s strong adhesion keeps the layers together.

Her approach won Cunin high marks from her advisor. “Camille was working on a complex problem, but she found a way to simplify it with a straightforward approach,” Gumyusenge says.

Of course, even an elegant solution needs test drives. “The more crystalline the polymers are, the better the charges percolate and travel in the material,” Cunin points out, referring to how ordered the semiconducting polymers in the transistor channel are. But if they’re packed too tightly, ions don’t move freely, and the transistor channel can’t switch properly. The arrangement of the spaghetti-like polymer chains controls this balance, so Cunin studied the composites’ structure to optimize both ionic and electronic performance.

Professor Polina Anikeeva, who co-advised Cunin with Gumyusenge and calls her “unstoppable,” says her innovation in the lab was remarkable — but not surprising.

“She didn’t have to be pushed into trying something new,” says Anikeeva, head of DMSE. “I would have higher and higher expectations, and she would consistently meet those higher and higher expectations.”

That drive continues in industry. Cunin now works at the Cambridge-based neurotechnology startup Axoft — just minutes from her former lab at MIT — researching soft electrodes that can be implanted in the brain. The electrodes detect electrical signals that can shed light on the brain’s many functions. “By understanding the brain better, we can eventually develop therapies and treatments that improve patient outcomes,” Cunin says.

Creative outlets

During her time at MIT, Cunin also made time for activities outside the lab, driven by the same curiosity that fueled her research. Committed to sharing her love of materials science and engineering, she was a leading member of the Polymer Graduate Student Association and organized several editions of MIT Polymer Day, a one-day symposium connecting students, faculty, and industry to showcase cutting-edge polymer research.

She also pursued creative outlets. After learning to use 3D graphics software Blender, Cunin illustrated some of the journal covers featuring her work.

She is also a diehard salsa fan and teaches the dance style a couple of times a week. Salsa’s social and collaborative forms appeal to Cunin, who enjoys sharing her passion, experimenting with choreography, and helping fellow dancers improve. “Salsa is fast — I love the mental challenge it brings. I also like that it exposes you to different aspects of the community; it pushes you out of your bubble,” she says.

Gumyusenge appreciates that Cunin made time for other pursuits throughout the grueling demands of a doctoral degree. “She’d work 14 hours a day in the lab, but also go do some hiking and take a break. I love that — it’s something that other PhD students seem to forget sometimes,” he says.

That balance reflects her determination and resolve. “Camille has never been shy about facing challenging research problems,” he says. “She had a research vision and was dedicated to learning the lessons she needed to get it all done. I learned to not get in her way because when Camille told you she would learn how to do something, she would.”

The president nominated the man he fired as leader of the nation's disaster agency a year ago.