Toward a Brain–Neuromorphics Interface

Wan, Changjin; Pei, Mengjiao; Shi, Kailu; Cui, Hangyuan; Long, Haotian; Qiao, Lesheng; Xing, Qianye; Wan, Qing

doi:10.1002/adma.202311288

Cited by 10 publications

References 200 publications

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Conformal Neuromorphic Bioelectronics for Sense Digitalization

Zhao,

Zou,

Wang

et al. 2024

Advanced Materials

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Sense digitalization, the process of transforming sensory experiences into digital data, is an emerging research frontier that links the physical world with human perception and interaction. Inspired by the adaptability, fault tolerance, robustness, and energy efficiency of biological senses, this field drives the development of numerous innovative digitalization techniques. Neuromorphic bioelectronics, characterized by biomimetic adaptability, stand out for their seamless bidirectional interactions with biological entities through stimulus‐response and feedback loops, incorporating bio‐neuromorphic intelligence for information exchange. This review illustrates recent progress in sensory digitalization, encompassing not only the digital representation of physical sensations such as touch, light, and temperature, correlating to tactile, visual, and thermal perceptions, but also the detection of biochemical stimuli such as gases, ions, and neurotransmitters, mirroring olfactory, gustatory, and neural processes. It thoroughly examines the material design, device manufacturing, and system integration, offering detailed insights. However, the field faces significant challenges, including the development of new device/system paradigms, forging genuine connections with biological systems, ensuring compatibility with the semiconductor industry and overcoming the absence of standardization. Future ambition includes realization of biocompatible neural prosthetics, exoskeletons, soft humanoid robots, and cybernetic devices that integrate smoothly with both biological tissues and artificial components.

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Conformal Neuromorphic Bioelectronics for Sense Digitalization

Zhao,

Zou,

Wang

et al. 2024

Advanced Materials

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A Biodegradable, Stretchable, Healable, and Self‐Powered Optoelectronic Synapse Based on Ionic Gelatins for Neuromorphic Vision System

Wang,

Wu,

Wang

et al. 2024

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Optoelectronic synapses have gained increasing attentions as a fundamental building block in the development of neuromorphic visual systems. However, it remains a challenge to integrate multiple functions into a single optoelectronic synapse that can be widely applied in wearable artificial intelligence and implantable neuromorphic vision systems. In this study, a stretchable optoelectronic synapse based on biodegradable ionic gelatin heterojunction is successfully developed. This device exhibits self‐powered synaptic plasticity behavior with broad spectral response and excellent elastic properties, yet it degrades rapidly upon disposal. After complete cleavage, the device can be fully repaired within 1 min, which is mainly attributed to the non‐covalent interactions between different molecular chains. Moreover, the recovery and reprocessing of the ionic gelatins result in optoelectronic properties that are virtually indistinguishable from their original state, showcasing the resilience and durability of ionic gelatins. The combination of biodegradability, stretchability, self‐healing, zero‐power consumption, ease of large‐scale preparation, and low cost makes the work a major step forward in the development of biodegradable and stretchable optoelectronic synapses.

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Centimeter‐Scale Assembly of Fractal Organic Crystals with Crisscross Structures for Flexible Photosynapses

Liu,

Dong,

et al. 2024

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Fractal assembly technology enables scalable construction of organic crystal patterns for emerging nanoelectronics and optoelectronics. Here, a polymer‐templating assembly strategy is presented for centimeter‐scale patterned growth of fractal organic crystals (FOCs). These structures are formed by drop‐coating perylene solution directly onto a gelatin‐modified surface, resulting in the formation of crisscross fractal patterns. By adjusting the tilt angle of the template, the morphology of FOCs can be effectively controlled, with the diameter distribution of each level branch ranging from hundreds to ten micrometers. The planar FOC device exhibits flexible photoreception and photosynaptic capabilities, with a high specific detectivity of 1.35 × 109 Jones and paired‐pulse facilitation (PPF) index of 104%, withstanding a 0.5 cm bending radius during bending test. These findings present a reliable route for large‐scale assembly of flexible organic crystalline materials toward neuromorphic electronics.

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Toward a Brain–Neuromorphics Interface

Cited by 10 publications

References 200 publications

Conformal Neuromorphic Bioelectronics for Sense Digitalization

Conformal Neuromorphic Bioelectronics for Sense Digitalization

A Biodegradable, Stretchable, Healable, and Self‐Powered Optoelectronic Synapse Based on Ionic Gelatins for Neuromorphic Vision System

Centimeter‐Scale Assembly of Fractal Organic Crystals with Crisscross Structures for Flexible Photosynapses

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