A bionic self-driven retinomorphic eye with ionogel photosynaptic retina

Xu Luo, Chen Chen, Zixi He, Min Wang, Keyuan Pan, Xuemei Dong, Zifan Li, Bin Liu, Zicheng Zhang, Yueyue Wu, Chaoyi Ban, Rong Chen, Dengfeng Zhang, Kaili Wang, Qiye Wang, Junyue Li, Gang Lu, Juqing Liu (), Zhengdong Liu () and Wei Huang ()
Additional contact information
Xu Luo: Nanjing Tech University (NanjingTech)
Chen Chen: Nanjing Tech University (NanjingTech)
Zixi He: Nanjing Tech University (NanjingTech)
Min Wang: Nanjing Tech University (NanjingTech)
Keyuan Pan: Nanjing Tech University (NanjingTech)
Xuemei Dong: Nanjing Tech University (NanjingTech)
Zifan Li: Nanjing Tech University (NanjingTech)
Bin Liu: Nanjing Tech University (NanjingTech)
Zicheng Zhang: Nanjing Tech University (NanjingTech)
Yueyue Wu: Nanjing Tech University (NanjingTech)
Chaoyi Ban: Nanjing Tech University (NanjingTech)
Rong Chen: Nanjing Tech University (NanjingTech)
Dengfeng Zhang: Nanjing Tech University (NanjingTech)
Kaili Wang: Nanjing Tech University (NanjingTech)
Qiye Wang: Nanjing Tech University (NanjingTech)
Junyue Li: Nanjing Tech University (NanjingTech)
Gang Lu: Nanjing Tech University (NanjingTech)
Juqing Liu: Nanjing Tech University (NanjingTech)
Zhengdong Liu: Nanjing Tech University (NanjingTech)
Wei Huang: Nanjing Tech University (NanjingTech)

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Bioinspired bionic eyes should be self-driving, repairable and conformal to arbitrary geometries. Such eye would enable wide-field detection and efficient visual signal processing without requiring external energy, along with retinal transplantation by replacing dysfunctional photoreceptors with healthy ones for vision restoration. A variety of artificial eyes have been constructed with hemispherical silicon, perovskite and heterostructure photoreceptors, but creating zero-powered retinomorphic system with transplantable conformal features remains elusive. By combining neuromorphic principle with retinal and ionoelastomer engineering, we demonstrate a self-driven hemispherical retinomorphic eye with elastomeric retina made of ionogel heterojunction as photoreceptors. The receptor driven by photothermoelectric effect shows photoperception with broadband light detection (365 to 970 nm), wide field-of-view (180°) and photosynaptic (paired-pulse facilitation index, 153%) behaviors for biosimilar visual learning. The retinal photoreceptors are transplantable and conformal to any complex surface, enabling visual restoration for dynamic optical imaging and motion tracking.

Date: 2024
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DOI: 10.1038/s41467-024-47374-6

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