A Bioinspired Retinomorphic Device for Spontaneous Chromatic Adaptation.
Yinlong TanHao HaoYabo ChenYan KangTao XuCheng LiXiangnan XieTian JiangPublished in: Advanced materials (Deerfield Beach, Fla.) (2022)
Chromatic adaptation refers to the sensing and preprocessing of the spectral composition of incident light on the retina, and it is important for color-image recognition. It is challenging to apply sensing, memory, and processing functions to color images via the same physical process using the complementary metal-oxide-semiconductor technology because of redundant data detection, complicated signal conversion processes, and the requirement for additional memory modules. Inspired by the highly efficient chromatic adaptation of the human retina, a 2D oxygen-mediated platinum diselenide (PtSe 2 ) device is presented to simultaneously apply sensing, memory, and processing functions to color images. The device exhibits a wavelength-dependent bipolar photoresponse and the linear pulse-number dependence of photoconductivity, which is dominated by the photon-mediated physical adsorption and desorption of oxygen molecules on bilayer PtSe 2 . The proposed retinomorphic device shows superior image classification accuracy (over 90%) compared to an independent pseudocolor channel (less than 75%). Hence, it is promising for developing artificial vision perception systems with reduced architectural complexity.
Keyphrases
- deep learning
- highly efficient
- working memory
- optical coherence tomography
- convolutional neural network
- physical activity
- mental health
- machine learning
- endothelial cells
- diabetic retinopathy
- cardiovascular disease
- blood pressure
- bipolar disorder
- artificial intelligence
- optic nerve
- big data
- computed tomography
- room temperature
- ionic liquid
- real time pcr
- data analysis
- monte carlo
- dual energy