Gate-tunable van der Waals heterostructure for reconfigurable neural network vision sensor.

ABSTRACT: Early processing of visual information takes place in the human retina. Mimicking neurobiological structures and functionalities of the retina provides a promising pathway to achieving vision sensor with highly efficient image processing. Here, we demonstrate a prototype vision sensor that operates via the gate-tunable positive and negative photoresponses of the van der Waals (vdW) vertical heterostructures. The sensor emulates not only the neurobiological functionalities of bipolar cells and photoreceptors but also the unique connectivity between bipolar cells and photoreceptors. By tuning gate voltage for each pixel, we achieve reconfigurable vision sensor for simultaneous image sensing and processing. Furthermore, our prototype vision sensor itself can be trained to classify the input i

SUBMITTER: Wang CY 

PROVIDER: S-EPMC7314516 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature