Research Article

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2022, 15(2): 758–764

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https://doi.org/10.1007/s12274-021-3602-x

Fully rubbery synaptic transistors made out of all-organic materials for elastic neurological electronic skin

Hyunseok Shim1, Seonmin Jang1, Jae Gyu Jang2, Zhoulyu Rao1, Jong-In Hong2, Kyoseung Sim3, and Cunjiang Yu1,4,5,6,7 (✉)

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1 Materials Science and Engineering Program, University of Houston, Houston, TX 77204 USA
2 Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
3 Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
4 Department of Mechanical Engineering, University of Houston, Houston, TX 77204 USA
5 Department of Biomedical Engineering, University of Houston, Houston, TX 77204, USA
6 Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204 USA
7 Texas Center for Superconductivity, University of Houston, Houston, TX 77204, USA

Keywords: synaptic transistor, stretchable, electronic skin, all-organic
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  • Abstract
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Neurologic function implemented soft organic electronic skin holds promise for wide range of applications, such as skin prosthetics, neurorobot, bioelectronics, human-robotic interaction (HRI), etc. Here, we report the development of a fully rubbery synaptic transistor which consists of all-organic materials, which shows unique synaptic characteristics existing in biological synapses. These synaptic characteristics retained even under mechanical stretch by 30%. We further developed a neurological electronic skin in a fully rubbery format based on two mechanoreceptors (for synaptic potentiation or depression) of pressure-sensitive rubber and an all-organic synaptic transistor. By converting tactile signals into Morse Code, potentiation and depression of excitatory postsynaptic current (EPSC) signals allow the neurological electronic skin on a human forearm to communicate with a robotic hand. The collective studies on the materials, devices, and their characteristics revealed the fundamental aspects and applicability of the all-organic synaptic transistor and the neurological electronic skin.
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Fully rubbery synaptic transistors made out of all-organic materials for elastic neurological electronic skin. Nano Res. 2022, 15(2): 758–764 https://doi.org/10.1007/s12274-021-3602-x

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