Sandia Labs FY22 Laboratory Directed Research & Development Annual Report

FY22 ANNUAL REPORT

SMART MATERIALS FOR HIGHLY COMPLEX OPTICAL TAGS WITH ENVIRONMENTAL RESPONSE. As counterfeiting methods become more sophisticated, countermeasures must be

the resulting photophysical properties. They collaborated with Sandia Alliance partners from Georgia Tech and the University of Illinois Urbana Champaign who provided

developed at the same pace. In this Sandia LDRD project, unique exemplars of next generation anticounterfeiting optical tags were developed that leverage the luminescent properties of materials for encoding. The research team also gained a fundamental understanding of how both structure and composition affect the energy transfer pathways that govern

complementary modeling and organic synthesis expertise, respectively. Collectively, this project produced new and differentiating technologies enabling Sandia to develop advanced concept solutions for materials assurance. This work generated two patent applications, seven journal publications with one

making the cover of Angewandte Chemie , and a recently published article in Nature Communications . (PI: Dorina Sava Gallis)

photoluminescent properties in these materials, and they enabled the precise manipulation of

Cover of the Journal of the German Chemical Society Angewandte Chemie International Edition

FIN-ION TUNABLE TRANSISTOR FOR ULTRA-LOW POWER COMPUTING. Data-heavy workflows such as AI require in

Deterministic Analogue Switching published in Advanced Materials . The project benefited from collaborations with faculty and students at Sandia Alliance partner UT Austin, Sandia National/ Regional partner University of Michigan, and faculty at Sandia Alliance partner Texas A&M University, and Sandia National/Regional partners Stanford and Arizona State University. The Science Magazine Board of Reviewing Editors appointed PI Alec Talin to the board for his demonstrated expertise. (PI: A. Alec Talin)

memory computing, so this LDRD team focused on creating analog resistive nonvolatile memory to increase system efficiency. Work on this project revealed fundamental principles of an electrochemical random-access memory, established a viable path toward its integration, and leveraged correlated phenomena to enable on-demand architectural reconfigurability of computing fabrics. Anticipated impacts include computing systems with orders of magnitude improved energy efficiency and radiation hardness. This project resulted in three Technical Advances and six publications, including “Nonvolatile Electrochemical Random-Access Memory under Short Circuit” published in Advanced Electronic Materials and Filament Free Bulk Resistive Memory Enables

Work on this project revealed fundamental principles of electrochemical random access memory and

established a viable path toward its integration with complementary metal-oxide semiconductor.

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