Bird-Inspired Self-Navigating Artificial Synaptic Compass

Youngwoo Kim, Kyuho Lee, Junseok Lee, Seonghoon Jang, Ho Yeon Kim, Hyunhaeng Lee, Seung Won Lee, Gunuk Wang, Cheolmin Park

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Extrasensory neuromorphic devices that can recognize, memorize, and learn stimuli imperceptible to human beings are of considerable interest in interactive intelligent electronics research. This study presents an artificially intelligent magnetoreceptive synapse inspired by the magnetocognitive ability used by birds for navigation and orientation. The proposed synaptic platform is based on arrays of ferroelectric field-effect transistors with air-suspended magneto-interactive top-gates. A suspended gate of an elastomeric composite with superparamagnetic particles laminated with an electrically conductive polymer is mechanically deformed under a magnetic field, facilitating control of the magnetic-field-dependent contact area of the suspended gate with an underlying ferroelectric layer. The remanent polarization of the ferroelectric layer is electrically programmed with the deformed suspended gate, resulting in analog conductance modulation as a function of the magnitude, number, and time interval of the input magnetic pulses. The proposed extrasensory magnetoreceptive synapse may be used as an artificially intelligent synaptic compass that facilitates barrier-adaptable navigation and mapping of a moving object.

Original languageEnglish
Pages (from-to)20116-20126
Number of pages11
JournalACS Nano
Issue number12
Publication statusPublished - 2021 Dec 28

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


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