Breakthrough Memory Chip Survives 1300°F, Unlocking New Frontiers for AI

USC engineers create a revolutionary memristor device that can operate at extreme temperatures, paving the way for applications in space, energy, and beyond.

Apr. 7, 2026 at 5:34am

Got story updates? Submit your updates here. ›

A bold, highly structured abstract painting in soft, flat colors depicting sweeping geometric arcs, concentric planetary circles, and precise botanical spirals, conceptually representing the complex scientific innovation behind a revolutionary high-temperature memory device.An abstract visualization of the innovative atomic-level mechanisms that enable a breakthrough memory device to operate at temperatures exceeding 1300°F, unlocking new frontiers for electronics in extreme environments.Today in Dayton

A team of engineers at the University of Southern California has developed a groundbreaking memory device that can operate at temperatures up to 700°C (1300°F), shattering the previous limits of electronics. This new memristor, constructed with a unique stack of ultra-durable materials including tungsten, hafnium oxide, and graphene, is capable of storing data and performing computations even in conditions hotter than molten lava. The discovery, which was partly accidental, reveals a novel mechanism that prevents heat-induced failure at the atomic level, opening up new possibilities for electronics in extreme environments.

Why it matters

This breakthrough has significant implications for space exploration, geothermal energy, nuclear systems, and other applications that require electronics to function in extremely hot conditions. Beyond just data storage, the device's ability to perform matrix multiplication efficiently also makes it a game-changer for artificial intelligence, potentially enabling AI systems to process data directly on-site in harsh environments rather than relying on remote servers.

The details

The new memristor device is constructed with a layered structure, featuring two electrodes on either side and a thin ceramic layer in between. The specific materials used - tungsten for the top electrode, hafnium oxide ceramic in the middle, and graphene for the bottom layer - are key to the device's exceptional performance. Tungsten has the highest melting point of any element, while graphene is known for its exceptional strength and heat resistance. This combination allows the device to retain data for over 50 hours at 700°C without needing to be refreshed, and it can endure over 1 billion switching cycles at that temperature while operating at just 1.5 volts with speeds measured in tens of nanoseconds.

  • The study was published on March 26, 2026 in the journal Science.
  • The research was conducted through the CONCRETE Center, a multi-university Center of Excellence led by USC and supported by the Air Force Office of Scientific Research and the Air Force Research Laboratory.

The players

Joshua Yang

Arthur B. Freeman Chair Professor at the Ming Hsieh Department of Electrical and Computer Engineering at the USC Viterbi School of Engineering and the USC School of Advanced Computing, and the lead researcher on the study.

Jian Zhao

The study's first author, who built the device using the unique combination of materials.

CONCRETE Center

A multi-university Center of Excellence led by USC and supported by the Air Force Office of Scientific Research and the Air Force Research Laboratory, where the key experimental work was carried out.

Sabyasachi Ganguli

A researcher whose team at the AFRL Materials Lab in Dayton, Ohio, collaborated on the experimental work.

Qiangfei Xia, Miao Hu, and Ning Ge

Co-authors of the study who have co-founded a company called TetraMem to commercialize memristor-based AI chips at room temperature.

Got photos? Submit your photos here. ›

What they’re saying

“You may call it a revolution. It is the best high-temperature memory ever demonstrated.”

— Joshua Yang, Lead Researcher

“To be honest, it was by accident, as most discoveries are. If you can predict it, it's usually not surprising, and probably not significant enough.”

— Joshua Yang, Lead Researcher

“Over 92 percent of the computing in AI systems like ChatGPT is nothing but matrix multiplication. This type of device can perform that in the most efficient way, orders of magnitude faster and at lower energy.”

— Joshua Yang, Lead Researcher

“Space exploration has never been so real, so close, and at such a large scale. This paper represents a critical leap into a much larger, more exciting frontier.”

— Joshua Yang, Lead Researcher

What’s next

The researchers emphasize that practical applications are still some distance away, as they need to develop high-temperature logic circuits and integrate them with the memory device. Additionally, the current devices were built manually at small scales in a laboratory setting, so manufacturing at scale will take time.

The takeaway

This breakthrough in high-temperature memory technology opens up new possibilities for electronics in extreme environments, from space exploration to geothermal energy systems. Beyond just data storage, the device's efficient matrix multiplication capabilities also make it a game-changer for artificial intelligence, potentially enabling on-site data processing in harsh conditions.