Optoelectronic synapses using vertically aligned graphene/diamond heterojunctions

Y. Mizuno, Y. Ito, K. Ueda*

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The present work demonstrates that vertically aligned graphene (VG)/diamond heterojunctions can function as optoelectronically-controllable synapses, which are connection parts of neurons and key elements for the memory functions of human brain. These junctions mimic several of the fundamental characteristics of biological synapses, including producing an excitatory postsynaptic current (EPSC), exhibiting a transition from short-term memory (STM) to long-term memory (LTM) states, and paired pulse facilitation (PPF), all of which are optically controllable. These junctions also exhibit photo-sensing properties and photo-controllable synaptic plasticity, meaning that they have similar functions as occur in the human brain and retina. Arrays fabricated from these junctions were found to function as image sensors that could provide an optical memory function and selectively memorize information depending on the relative importance of the data. These results are expected to assist in the realization of neuromorphic optical computers simulating human visual memory systems that are modulated by specific interests.

本文言語English
ページ(範囲)669-676
ページ数8
ジャーナルCarbon
182
DOI
出版ステータスPublished - 2021 9月
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)

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