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Highly flexible and degradable memory electronics comprised of all-biocompatible materials
Tongfen Jiang1, Xianghao Meng, Zhe Zhou
1Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China. iamzdliu@njtech.edu.cn iamhdyu@njtech.edu.cn iamjqliu@njtech.edu.cn.
Researchers developed a fully biocompatible memory device using carbon dots and gelatin for flexible, transient electronics. This eco-friendly memory offers rewritable flash-type behavior and rapid degradation, paving the way for green electronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- Biocompatible materials are crucial for developing advanced flexible and transient electronic devices.
- Resistive switching (RS) memory offers promising nonvolatile characteristics for next-generation memory applications.
Purpose of the Study:
- To introduce a fully biocompatible resistive switching memory device for flexible and transient applications.
- To evaluate the nonvolatile memory characteristics and degradability of the fabricated device.
Main Methods:
- Fabrication of a memory device using a carbon dot (CD)-polyvinyl pyrrolidone (PVP) nanocomposite and a silver nanowire (Ag NW) network in a gelatin film.
- Characterization of the device's resistive switching behavior, including operation voltage, ON/OFF ratio, and retention time.
- Assessment of the device's degradability in deionized water and natural soil conditions.
Main Results:
- The device demonstrated rewritable flash-type memory behavior with low operation voltage (≈-1.12 V) and high ON/OFF ratio (>10^2).
- Achieved a long retention time (over 10^4 s) and a small bending radius (15 mm), indicating suitability for flexible applications.
- The transient memory exhibited complete dissolution in hot deionized water within 90 s and natural decomposition in soil within 6 days.
Conclusions:
- The fully biocompatible memory electronic device shows significant potential for flexible and transient memory applications.
- This development offers a novel pathway for creating eco-friendly and biodegradable green electronics.
- The material combination of CDs, PVP, Ag NWs, and gelatin provides a versatile platform for advanced electronic functionalities.
