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Related Experiment Video

Updated: Jun 13, 2025

Author Spotlight: Innovative Methodology for Implanting and Securing Neural Probes in the Rodent Spinal Cord
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Biocompatible Lactulose-Based Resistive Random Access Memory for Implantable Electronics.

Beom Soo Kim1, Jong Bin An1, Dong Hyun Choi1

  • 1School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

ACS Applied Materials & Interfaces
|May 28, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new bioimplantable memory device using lactulose, a biocompatible sugar. This durable resistive random-access memory (RRAM) shows promise for digital healthcare applications due to its stability and data storage capabilities.

Keywords:
RRAMbiocompatiblebioimplantablecell viabilitylactuloseorganicresistive switching

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Bioimplantable memory devices require high biocompatibility and biostability for digital healthcare.
  • Existing materials may not meet the stringent requirements for long-term implantation.
  • Developing novel materials is crucial for advancing implantable electronic systems.

Purpose of the Study:

  • To develop a biocompatible and biostable resistive random-access memory (RRAM) device for bioimplantation.
  • To investigate the potential of lactulose as a switching-layer material in RRAM.
  • To evaluate the performance and safety of lactulose-based RRAM for bioelectronic applications.

Main Methods:

  • Fabrication of a novel lactulose-based RRAM device.
  • Characterization of resistive switching properties, including switching window, endurance, and retention.
  • Assembly and testing of a 6x6 crossbar array of the lactulose-based RRAM.
  • In vitro cell cytotoxicity testing to assess biocompatibility.

Main Results:

  • The lactulose-based RRAM exhibited stable bipolar resistive switching with a ~10^3 switching window.
  • A native MgOx layer was observed, contributing to the device's bipolar switching characteristics.
  • The device demonstrated high uniformity, stability, and excellent endurance and retention properties.
  • In vitro testing showed a relative cell viability of 80.2% after 72 hours, confirming good biocompatibility.

Conclusions:

  • Lactulose is a suitable material for the switching layer in bioimplantable RRAM devices.
  • The fabricated lactulose-based RRAM demonstrates excellent performance, stability, and biocompatibility.
  • This technology holds significant potential for use in advanced bioimplantable electronics and digital healthcare.