A nano-mechanical device using a Ag2S-C60 system

Yuya Ishikawa*, Tsuyoshi Hasegawa, Christian Joachim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Electronic circuit elements that show analog resistance change are required for the development of hardware-based machine learning systems. The energy level of a molecular orbital changes when the bond angle is distorted, for example when using a C60 molecule that is compressed by a scanning tunneling microscope (STM). The issue for practical use of this phenomenon is how to compress a C60 molecule in actual devices. In this study we have developed an electrochemical method in which Ag atoms precipitated from a Ag2S electrode compress a C60 molecule. We measured the I/V characteristics of a C60 molecule using a STM equipped with a Ag2S tip. The I/V characteristics clearly show the change in electronic states of the C60 molecule due to compression by the precipitated Ag atoms. Since this method can be implemented in actual devices, a Ag2S-C60 system will be a candidate element for future machine learning systems.

Original languageEnglish
Article numberSDDF02
JournalJapanese journal of applied physics
Issue numberSD
Publication statusPublished - 2019

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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