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Electrolyte gating uses ions to reversibly modify La0.5Sr0.5CoO3−δ, changing oxygen content and electrical, magnetic, and optical properties at 1–2 V. The team achieved ~100-cycle endurance with humidity control and 4 nm films switching in ~0.7 s. Prospects include tunable optics/photonics; future work targets diffusion and surface chemistry; collaborations.

NSF Materials Research Science and Engineering Centers will conduct frontier research to understand and develop materials with unique properties and applications, from 3D printing living tissue for medical treatments to more efficient mineral extraction

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