School of Science, RMIT University, VIC 3001, Melbourne, Australia.
Nanoscale. 2018 Nov 8;10(43):20272-20278. doi: 10.1039/c8nr05328f.
Multi-state amorphous carbon-based memory devices have been developed that exhibit both bipolar and unipolar resistive switching behaviour. These modes of operation were implemented independently to access multiple resistance states, enabling higher memory density than conventional binary non-volatile memory technologies. The switching characteristics have been further utilised to study synaptic computational functions that could be implemented in artificial neural networks. Notably, paired-pulse inhibition (PPI) is observed at bio-realistic timescales (<100 ms). Devices displaying this rich synaptic behaviour could function as robust stand-alone synapse-inspired memory or be applied as filters for specialised neuromorphic circuits and sensors.
已经开发出了基于多晶态无定形碳的存储器件，其具有双极和单极电阻开关特性。这些操作模式被独立实现，以访问多个电阻状态，从而比传统的二进制非易失性存储技术具有更高的存储密度。开关特性进一步被用于研究突触计算功能，这些功能可以在人工神经网络中实现。值得注意的是，在生物现实的时间尺度（<100 ms）下观察到了成对脉冲抑制（PPI）。显示这种丰富的突触行为的器件可以作为稳健的独立突触启发式存储器，也可以作为专门的神经形态电路和传感器的滤波器应用。
