Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores
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 function...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/138663 |
| _version_ | 1826122978834776064 |
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| author | Li, Bin Liu, Yaqing Wan, Changjin Liu, Zhiyuan Wang, Ming Qi, Dianpeng Yu, Jiancan Cai, Pingqiang Xiao, Meng Zeng, Yi Chen, Xiaodong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Li, Bin Liu, Yaqing Wan, Changjin Liu, Zhiyuan Wang, Ming Qi, Dianpeng Yu, Jiancan Cai, Pingqiang Xiao, Meng Zeng, Yi Chen, Xiaodong |
| author_sort | Li, Bin |
| collection | NTU |
| description | 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 (≈1.0 V) compared to these with parallel mesopores (≈1.2 V) and dense amorphous silica (≈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. |
| first_indexed | 2024-10-01T05:57:26Z |
| format | Journal Article |
| id | ntu-10356/138663 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:57:26Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1386632023-07-14T15:59:35Z Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores Li, Bin Liu, Yaqing Wan, Changjin Liu, Zhiyuan Wang, Ming Qi, Dianpeng Yu, Jiancan Cai, Pingqiang Xiao, Meng Zeng, Yi Chen, Xiaodong School of Materials Science & Engineering Engineering::Materials Artificial Memristive Synapses Mesopores 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 (≈1.0 V) compared to these with parallel mesopores (≈1.2 V) and dense amorphous silica (≈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. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-05-11T08:04:34Z 2020-05-11T08:04:34Z 2018 Journal Article Li, B., Liu, Y., Wan, C., Liu, Z., Wang, M., Qi, D., . . . Chen, X. (2018). Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores. Advanced materials, 30(16), 1706395-. doi:10.1002/adma.201706395 0935-9648 https://hdl.handle.net/10356/138663 10.1002/adma.201706395 29544021 2-s2.0-85043677193 16 30 1706395 (1 of 7) 1706395 (7 of 7 en Advanced Materials © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. application/pdf |
| spellingShingle | Engineering::Materials Artificial Memristive Synapses Mesopores Li, Bin Liu, Yaqing Wan, Changjin Liu, Zhiyuan Wang, Ming Qi, Dianpeng Yu, Jiancan Cai, Pingqiang Xiao, Meng Zeng, Yi Chen, Xiaodong Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title | Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title_full | Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title_fullStr | Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title_full_unstemmed | Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title_short | Mediating short-term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| title_sort | mediating short term plasticity in an artificial memristive synapse by the orientation of silica mesopores |
| topic | Engineering::Materials Artificial Memristive Synapses Mesopores |
| url | https://hdl.handle.net/10356/138663 |
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