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Recent advances in III-nitride heterostructures continue to push the boundaries of high-frequency and high-power device performance. A new study, “Demonstrating the Effects of Growth Temperatures of Al(In)GaN Back Barrier on Transport Properties of InAlGaN/GaN Heterostructures,” takes a close look at how carefully tuning growth conditions can directly shape electronic behavior at the nanoscale.

In this article, the authors—Hoang-Tan-Ngoc Nguyen, Rahul Rai, Quoc-Huy Nguyen, Quoc Viet Hoang, Ngoc Quang Huy Dinh, Chan-Yuen Chang, Chien-Wei Chen, You-Chen Weng, Hao-Chung Kuo, Ching-Ting Lee, and Edward-Yi Chang—investigate how the growth temperature of an Al(In)GaN back barrier fabricated using metal-organic chemical vapor deposition (MOCVD) influences the structure and performance of InAlGaN/GaN heterostructures. By minimizing the temperature gap between the channel and back barrier layers, the researchers achieved highly coherent growth with smooth surfaces, sharp interfaces, and no detectable threading dislocations. These structural improvements translated into measurable performance gains: higher electron mobility, reduced sheet carrier density, and stronger electron confinement. (more…)

Noël Hallemans

Noël Hallemans
University of Oxford

Date: January 21, 2026
Time: 1000–1100h ET

The Electrochemical Society hosted “Physics-based battery model parametrization from impedance data,” a live webinar by Noël Hallemans (University of Oxford), on January 21, 2026. A live Question and Answer session followed. Answers to some of the questions not addressed during the broadcast follow.

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Dr. Loraine Torres-Castro

Physicist Dr. Loraine Torres-Castro, Battery Safety Lead at Sandia National Laboratories, is serving as the lead organizer for the A01—New Approaches and Advances in Electrochemical Energy Systems Symposium at the 249th ECS Meeting in Seattle, WA, this spring.  

In a recent interview with ECS staff, Dr. Torres-Castro shared insights into the rewards and complexities of symposium leadership, encouraging colleagues to pursue similar roles. She is part of a dynamic new organizing team—which includes Dr. Yuliya Preger (Sandia National Laboratories) and Prof. Golareh (Goli) Jalilvand (University of South Carolina)—that has introduced a collaborative leadership model. Under this arrangement, the leads rotate each meeting: Dr. Preger led the 248th Meeting, while Prof. Jalilvand is slated to lead the 250th. 

Learn more about symposium organizing and Dr. Torres-Castro.

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249th ECS Meeting

A big thank you to everyone who scheduled a symposium for the 249th ECS Meeting! Your participation and cooperation made what could have been a heavy lift feel light.

The full meeting schedule is currently under review by the Interdisciplinary Science and Technology Subcommittee (ISTS). You will be contacted if any changes are needed for your symposium. We are on track to send acceptance letters on February 16.

Preliminary Visa Letters of Invitation are now available. We want as many authors as possible to join us in person in Seattle. Please encourage authors residing outside the US to request a preliminary visa letter ASAP so they can begin the visa application process early. Requests can be submitted via the Visa Letter Request form. (more…)

All-solid-state batteries are widely viewed as a next-generation solution for safer and higher energy storage. But translating promising materials from the lab to large-scale manufacturing depends on more than performance alone—it also requires compatibility with real-world production environments.

A new open-access article in the Journal of The Electrochemical Society examines how chloride-based solid-state electrolytes behave when exposed to dry room conditions commonly used in battery manufacturing. The study focuses on practical considerations that matter for scalability, offering valuable insight into how these materials respond outside ideal laboratory settings.  (more…)

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As of January 1, 2026, the ECS Europe Section welcomed a new Executive Committee. Prof. Ingrid Milošev (Jožef Stefan Institute) has assumed the role of Chair, with Prof. Thierry Djenizian (École Nationale Supérieure des Mines de Saint-Étienne) as Vice Chair. Prof. Iwona Rutkowska (Uniwersytet Warszawski) serves as Secretary, and Prof. Andrea Bourke (Technological University of the Shannon) as Treasurer. Prof. Jan Macák (Univerzita Pardubice) continues his involvement as Immediate Past Chair. The Executive Committee is further supported by Members-at-Large: Profs. Philippe Marcus, Paweł Kulesza, Noel Buckley, Petr Vanýsek, Giuseppe Barillaro, Geir Martin Haarberg, Stefan de Gendt, Uroš Cvelbar, and Dr. Robert Lynch. (more…)