Oak Ridge lowers electronics energy by 40%

Oak Ridge National Laboratory said this month that its researchers found a way to reduce a key energy cost inside electronic devices by about 40% by changing how a common semiconductor material is processed. The work centers on aluminum nitride, a material already used in microelectronics, and on ferroelectric switching — the voltage-driven flip between two internal states that can be used to store data or tune device behavior. ORNL said the method could support lower-power memory and wireless communication components while fitting within manufacturing approaches chipmakers already use. The laboratory published the work in *Advanced Materials* and described it in a May 7 release. ### What exactly did Oak Ridge change inside the material? ORNL researchers said they used a tightly focused helium ion beam to create tiny defects in aluminum nitride and directly write ferroelectricity into the material. The beam was about 1 nanometer wide, according to the lab, allowing the team to target features with near-atomic precision at the Center for Nanophase Materials Sciences, a DOE Office of Science user facility at Oak Ridge. (ornl.gov) Bogdan Dryzhakov, an ORNL postdoctoral research associate at CNMS, said the novelty was combining two tools already familiar to industry. Aluminum nitride is already used in many 5G and Wi‑Fi devices, and helium ion beams are already used to make very small changes to circuits, he said in the ORNL release. ### Why does “polarization switching” matter for power use? (ornl.gov) ORNL said the energy savings came from lowering the energy needed for polarization switching by about 40%. In ferroelectric materials, that switching is the reversible flip of built-in electric polarization under an applied voltage, a function that can be used to store information like a digital on-off state. The laboratory said ferroelectric devices can store data without constant power, which is why they are of interest for lower-power electronics. (ornl.gov) ORNL linked the advance specifically to more efficient memory and wireless communication devices, and said the effect could also reduce heat in future components. ### Why use aluminum nitride instead of a new chip material? (ornl.gov) ORNL said aluminum nitride belongs to the wurtzite nitride family, a class of semiconductors already widely used in microelectronics whose ferroelectric potential has only been recognized since 2019. The lab said that matters because the approach does not require chipmakers to adopt an entirely new material platform. (ornl.gov) Dryzhakov said the method uses “what they already have in a new way,” referring to existing material and process tools in chip manufacturing. ORNL said that could make the result more compatible with current fabrication lines than approaches that depend on introducing unfamiliar materials or process steps. That conclusion is the lab’s characterization of the work, not a commercial deployment timeline. (ornl.gov) ### What is different about the defects in this study? Traditional ferroelectric research has generally treated defects as undesirable because they can raise switching costs and increase electrical leakage, ORNL said. In aluminum nitride and related wurtzite nitrides, however, the lab said defects can help one-dimensional channels switch independently rather than forcing the whole crystal lattice to participate in the process. (ornl.gov) ORNL presented that as a different switching mechanism from more established ferroelectric systems. The lab said the result amounts to a new processing approach for wurtzite III-V nitrides rather than a simple refinement of older ferroelectric designs. ### Where was the work reported, and what comes next? Oak Ridge National Laboratory published the finding in *Advanced Materials* and summarized it in a May 7, 2026 news release. (ornl.gov) ORNL’s news desk and all-news pages both describe the same result: a roughly 40% reduction in switching energy and possible use in memory and wireless communication devices. The next concrete step in the public record is the paper itself and any follow-on device work by ORNL and collaborators using the CNMS facility. (ornl.gov) As of ORNL’s May release, the laboratory had framed the advance as a materials-processing result that could be used with existing chip-manufacturing methods, rather than announcing a commercial product or production date. (ornl.gov)