Mimicking Neuroplasticity in a Hybrid Biopolymer Transistor by Dual Modes Modulation
Mimicking Neuroplasticity in a Hybrid Biopolymer Transistor by Dual Modes Modulation
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通过双模式调制模拟混合生物聚合物晶体管的神经可塑性
DOI：
10.1002/adfm.201902374
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发表时间：
2019-08-01
影响因子：
19
通讯作者：
Han, Su-Ting
中科院分区：
文献类型：
--
作者：
Lv, Ziyu;Chen, Meng;Han, Su-Ting
能够以高面积和能量效率进行并行信息存储和处理的神经形态计算系统为未来的存储系统和内存计算提供了重要的机会。在这里，它表明，碳量子点/丝蛋白（CD/丝）的混合物可以用作光可调的电荷捕获介质，以制造电-光活性晶体管突触。突触装置可以以易失性或非易失性模式进行光学操作，确保伴随的短期和长期神经可塑性。突触样行为归因于在混合CD/丝膜中捕获的光生电子诱导的光门效应，这是用基于原子力显微镜的电学技术证实的。此外，系统级的模式识别能力的突触设备的单层感知器模型进行评估。神经形态架构的远程光学操作为完成生物启发的光子计算范式提供了有前途的构建模块。
Neuromorphic computing systems that are capable of parallel information storage and processing with high area and energy efficiencies, offer important opportunities for future storage systems and in-memory computing. Here, it is shown that a carbon dots/silk protein (CDs/silk) blend can be used as a light-tunable charge trapping medium to fabricate an electro-photoactive transistor synapse. The synaptic device can be optically operated in volatile or nonvolatile modes, ensuring concomitant short-term and long-term neuroplasticity. The synaptic-like behaviors are attributed to the photogating effect induced by trapped photogenerated electrons in the hybrid CDs/silk film which is confirmed with atomic force microscopy based electrical techniques. In addition, system-level pattern recognition capability of the synaptic device is evaluated by a single-layer perceptron model. The remote optical operation of neuromorphic architecture provides promising building blocks to complete bioinspired photonic computing paradigms.