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Neuromorphic Imaging: Fully Light‐Controlled Memory and Neuromorphic Computation in Layered Black Phosphorus (Adv. Mater. 10/2021)

An all-optically tunable neuromorphic imaging element based on black phosphorus (BP) is demonstrated by Taimur Ahmed, Sumeet Walia, and co-workers in article number 2004207. The unusual wavelength-dependent photocurrent in BP is harnessed to optically program and erase visual memory elements. Concurrently, the same elements are capable of in-pixel image preprocessing in an imaging array and optoelectronic machine learning for pattern classification and image recognition through deploying artificial neural networks.