Organic resistive random access memory (RRAM) has high potential in the nonvolatile memory field for next-generation green electronics. In general, RRAM devices are usually fabricated on substrates, for example, glass and plastic. In the present study, an Al/gelatin/Ag sandwiched structure on a bio-cellulose (BC) film is demonstrated, whose texture is flexible, ductile, and can be adapted to uneven surfaces. The BC film could be degraded completely in soil in only 5 days. In addition, the gelatin dielectric layer and the BC film substrate are non-toxic and environmentally friendly, realizing a skin-inspired and fully biodegradable device. This Al/gelatin/Ag/BC device shows a high on/off current ratio (>10⁴), low operation voltage (<3 V), and good uniformity at room temperature without obviously aging by which it can still retain its ability. Moreover, this device also withstands the simulation of the effects on temperature and perspiration of human skin, investigated by measuring the electrical characteristics after attaching it onto pigskin. The results show that the device can be operated repeatedly, and the high on/off current ratio (close to 10⁴) is still retained. The outstanding performances prove its feasibility as a skin-attachable wearable device. The demonstration implies that the skin-inspired biodegradable device is a forward-looking development and can be applied to the physiological evaluation and daily recording of wearable devices.

中文翻译：

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用于制造完全可生物降解的电阻随机存取器件的生物纤维素基材

有机电阻随机存取存储器 (RRAM) 在用于下一代绿色电子产品的非易失性存储器领域具有很高的潜力。通常，RRAM 器件通常制造在基板上，例如玻璃和塑料。在本研究中，展示了生物纤维素 (BC) 薄膜上的 Al/明胶/Ag 夹层结构，其质地柔韧、有延展性，可以适应不平坦的表面。BC 膜在土壤中仅需 5 天即可完全降解。此外，明胶介电层和BC膜基材无毒环保，实现了仿皮且可完全生物降解的设备。这种 Al/明胶/Ag/BC 器件显示出高开/关电流比 (>10 ⁴)，工作电压低(<3 V)，室温均匀性好，无明显老化，仍能保持能力。此外，该设备还可以模拟人体皮肤对温度和汗水的影响，通过测量将其贴在猪皮上后的电气特性进行研究。结果表明，该器件可重复运行，且仍保持较高的开/关电流比（接近10 ⁴）。出色的性能证明了其作为可贴附于皮肤的可穿戴设备的可行性。该演示表明，受皮肤启发的可生物降解设备是一项具有前瞻性的发展，可应用于可穿戴设备的生理评估和日常记录。