Multiferroic sensing-logic photodetectors for encryption communication

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Abstract
Near-sensor computing technology shows high efficiency and intelligence, exhibiting significant promise in the post-Moore era. The light power density and wavelength are used as the stimulations to implement reconfigurable logic operations (AND, OR) in dual-band-response Bi 0.5 Na 0.5 Ti 0.85 Fe 0.15 O 3 multiferroic photodetectors, where the polarization-dependent photocurrents are the weighting factors. The p-d hybridization between the O atom and Fe dopants constructs the mixed band structure and carrier transport network. The in-sensor computing photodetectors showcase optical encryption communication of the English alphabet and Chinese characters by ASCII code. This research holds promise for the in-sensor computing paradigm, enabling complex tasks.

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