期刊
ADVANCED MATERIALS
卷 30, 期 16, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201706395
关键词
artificial memristive synapses; mesopores; orientation; short-term plasticity; silica
类别
资金
- Singapore Ministry of Education [MOE2014-T2-2-140, MOE2015-T2-2-060]
- National Research Foundation, Prime Minister's Office, Singapore under NRF Investigatorship [NRF2016NRF-NRFI001-21]
- K. C. Wong Education Foundation
Memristive synapses based on resistive switching are promising electronic devices that emulate the synaptic plasticity in neural systems. Short-term plasticity (STP), reflecting a temporal strengthening of the synaptic connection, allows artificial synapses to perform critical computational functions, such as fast response and information filtering. To mediate this fundamental property in memristive electronic devices, the regulation of the dynamic resistive change is necessary for an artificial synapse. Here, it is demonstrated that the orientation of mesopores in the dielectric silica layer can be used to modulate the STP of an artificial memristive synapse. The dielectric silica layer with vertical mesopores can facilitate the formation of a conductive pathway, which underlies a lower set voltage (approximate to 1.0 V) compared to these with parallel mesopores (approximate to 1.2 V) and dense amorphous silica (approximate to 2.0 V). Also, the artificial memristive synapses with vertical mesopores exhibit the fastest current increase by successive voltage pulses. Finally, oriented silica mesopores are designed for varying the relaxation time of memory, and thus the successful mediation of STP is achieved. The implementation of mesoporous orientation provides a new perspective for engineering artificial synapses with multilevel learning and forgetting capability, which is essential for neuromorphic computing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据