Metal-insulator transition based non-volatile, rewritable, all-optical imprinting on VO<sub>2</sub>
ORAL
Abstract
All-optical material manipulations are highly desirable in modern telecommunication networks for signal routing and storage, because it can eliminate the need for optical-electrical conversions that hamper data rate and generate extra energy consumptions. We demonstrate the reversible writing and erasing of metallic structures in VO2 using a single visible laser beam by either varying the environmental pressure or tuning the laser pulse duration. Different from the conventional laser heating based phase-change materials used in optical data storage, the effects observed in VO2 are driven by photochemical reactions related to the molecules in the air. The laser-patterned structures are stable in the air for days and can be easily read-out through their substantially altered resistance, reflectance, and structural properties and fully compatible with super-resolution optical techniques, these findings provide a new route for non-volatile photonic information processing.
*Experimental work at West Virginia University was supported DoE Grant No. DE SC 0010399 and National Science Foundation Grant No. NSF 1454950. National Science Foundation through Grant No. DMR 1352502 and the Penn State MRSEC program DMR 1420620.
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Presenters
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Logan Lang
- Physics and Astronomy, West Virginia Univ