Materials Today Bio (Jun 2024)

A reversible implantable memristor for health monitoring applications

  • Zelin Cao,
  • Linbiao Xiang,
  • Bai Sun,
  • Kaikai Gao,
  • Jiawei Yu,
  • Guangdong Zhou,
  • Xuegang Duan,
  • Wentao Yan,
  • Fulai Lin,
  • Zhuoqun Li,
  • Ruixin Wang,
  • Yi Lv,
  • Fenggang Ren,
  • Yingmin Yao,
  • Qiang Lu

Journal volume & issue
Vol. 26
p. 101096

Abstract

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Conventional implantable electronics based on von Neumann architectures encounter significant limitations in computing and processing vast biological information due to computational bottlenecks. The memristor with integrated memory-computing and low power consumption offer a promising solution to overcome the computational bottleneck and Moore's law limitations of traditional silicon-based implantable devices, making them the most promising candidates for next-generation implantable devices. In this work, a highly stable memristor with an Ag/BaTiO3/MnO2/FTO structure was fabricated, demonstrating retention characteristics exceeding 1200 cycles and endurance above 1000 s. The device successfully exhibited three-stage responses to biological signals after implantation in SD (Sprague-Dawley) rats. Importantly, the memristor perform remarkable reversibility, maintaining over 100 cycles of stable repetition even after extraction from the rat. This study provides a new perspective on the biomedical application of memristors, expanding the potential of implantable memristive devices in intelligent medical fields such as health monitoring and auxiliary diagnostics.

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