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A flexible organic resistance memory device for wearable biomedical applications
Yimao Cai1, Jing Tan, Liu YeFan
1Institute of Microelectronics, Peking University, 100871, Beijing People's Republic of China. Innovation Center for Microelectronics and Integrated System, Peking University, 100871, Beijing People's Republic of China.
Nanotechnology
|June 1, 2016
Summary
A new flexible parylene-based organic resistive random access memory (RRAM) device shows promise for wearable biomedical applications. This FDA-approved material offers excellent stability and performance, even under harsh bending conditions.
Area of Science:
- Materials Science
- Electronics Engineering
- Biomedical Engineering
Background:
- Parylene is an FDA-approved, biocompatible material known for its chemical inertness and flexibility.
- Flexible electronics are crucial for advanced wearable biomedical applications.
- Resistive random access memory (RRAM) offers high storage density and low power consumption.
Purpose of the Study:
- To develop and characterize a flexible parylene-based organic RRAM device for wearable biomedical applications.
- To evaluate the device's performance, stability, and potential for integration with existing circuits.
- To elucidate the resistance switching mechanism in the parylene-based RRAM.
Main Methods:
- Fabrication of the flexible RRAM device using standard lithography and patterning at room temperature.
- Characterization of electrical properties, including storage window, retention, and immunity to disturbing.
- Assessment of mechanical and electrical stability under repeated bending stress.
- Analysis of the resistance switching mechanism through material analysis.
Main Results:
- The parylene-based RRAM device demonstrated a high storage window (>10^4) and superior retention.
- Excellent mechanical and electrical stability were observed under harsh bending conditions (>500 cycles, <10 mm radius).
- The device is compatible with CMOS integration and exhibits immunity to disturbing signals.
- Resistance switching is attributed to the formation and annihilation of metallic conducting filaments involving aluminum oxidation and migration.
Conclusions:
- Flexible parylene-based organic RRAM devices are highly suitable for wearable biomedical applications.
- The device's robust performance and biocompatibility make it a promising candidate for future implantable and wearable technologies.
- The demonstrated fabrication process and understanding of the switching mechanism pave the way for further development in flexible electronics.
