Curved neuromorphic image sensor array using a MoS2-organic heterostructure inspired by the human visual recognition system

Abstract

Conventional imaging and recognition systems require an extensive amount of data storage, pre-processing, and chip-to-chip communications as well as aberration-proof light focusing with multiple lenses for recognizing an object from massive optical inputs. This is because separate chips (i.e., flat image sensor array, memory device, and CPU) in conjunction with complicated optics should capture, store, and process massive image information independently. In contrast, human vision employs a highly efficient imaging and recognition process. Here, inspired by the human visual recognition system, we present a novel imaging device for efficient image acquisition and data pre-processing by conferring the neuromorphic data processing function on a curved image sensor array. The curved neuromorphic image sensor array is based on a heterostructure of MoS2 and poly(1,3,5-trimethyl-1,3,5-trivinyl cyclotrisiloxane). The curved neuromorphic image sensor array features photon-triggered synaptic plasticity owing to its quasi-linear time-dependent photocurrent generation and prolonged photocurrent decay, originated from charge trapping in the MoS2-organic vertical stack. The curved neuromorphic image sensor array integrated with a plano-convex lens derives a pre-processed image from a set of noisy optical inputs without redundant data storage, processing, and communications as well as without complex optics. The proposed imaging device can substantially improve efficiency of the image acquisition and recognition process, a step forward to the next generation machine vision.

RETRACTED: ADVIAN: Alzheimer's Disease VGG-Inspired Attention Network Based on Convolutional Block Attention Module and Multiple Way Data Augmentation

“…Song et al (2021) presented a coarse-to-fine dual-view attention network for click-through rate prediction. Arora et al (2021) In all, attention acts an essential role within the human visual system (HVS) (Choi et al, 2020). Figure 6 displays a simplified instance of HVS, in which image formation is first seized by the lens of the human eye's cornea.…”

2D van der Waals Heterojunction of Organic and Inorganic Monolayers for High Responsivity Phototransistors

“…interfaces and advanced functionalities useful for various applications as photodetectors, [1][2][3][4] image sensors, [5] and neuromorphic computation devices. [6] Among various building layers revealed, of notable interest is the use of 2D semiconducting transition metal dichalcogenides (TMDs) as the component owing to their unique electrical and optical performances such as high mobility and strong light-matter interactions.…”

Unconventional Image‐Sensing and Light‐Emitting Devices for Extended Reality

“…[ 11,12 ] This imaging device not only responds to optical signals but also performs synaptic signal processing in the same device, which enables accurate and rapid pattern recognition with low energy consumption. [ 38 ]…”

“…The functional integration of synaptic devices with light‐sensing elements (i.e., light‐sensitive synaptic devices) have paved the way for new possibilities in neuromorphic vision system for power‐efficient pattern/image recognition. [ 11,12,38 ]…”