Flexible electronics with organic substrates have been developed for bio‐conformable devices and soft robotics. Although biodegradable polymers are preferred substrates for biomedical applications, they have poor heat durability, which precludes printing of conductive lines that require annealing at high temperatures (>250 °C). The fabrication of an ultra‐flexible, inkjet‐printed antenna coil with a resistivity of 4.30 × 10⁻⁵ Ω‐cm is reported. It involves annealing of a graphene/Au antenna coil printed on a glass substrate and transferring onto a 182‐nm‐thick poly(D, L‐lactic acid) nanosheet by exfoliation of multi‐stacked graphene flakes. Then, a light‐emitting device, powered wirelessly, even in the rounded, twisted, or attached states, is fabricated by mounting a blue LED chip on the nanosheet antenna coil. The self‐deploying device is also stored in a water‐soluble capsule, injected into a silicone bag, released from the dissolved capsule, and operated wirelessly. This work facilitates the hybridization of conductive lines and biodegradable polymers on ultra‐flexible biomaterials for the biomedical application of flexible electronics.

中文翻译：

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石墨烯/金混合天线线圈剥落的多堆叠石墨烯薄片，用于超薄生物医学设备

具有生物基质的柔性电子设备已被开发用于生物适形设备和软机器人。尽管可生物降解的聚合物是用于生物医学应用的首选基材，但它们的耐热性较差，因此无法印刷需要在高温（> 250°C）下进行退火的导线。电阻率为4.30×10 ^-5的超柔韧性喷墨印刷天线线圈的制造报告为Ω-cm。它涉及对印刷在玻璃基板上的石墨烯/金天线线圈进行退火，然后通过剥离多层石墨烯薄片将其转移到厚度为182 nm的聚（D，L-乳酸）纳米片上。然后，通过将蓝色LED芯片安装在纳米片天线线圈上，制造出即使在圆形，扭曲或附着状态下也可以无线供电的发光设备。该自部署设备还存储在水溶性胶囊中，注入硅胶袋中，从溶解的胶囊中释放出来，并进行无线操作。这项工作促进了导线和可生物降解的聚合物在超柔性生物材料上的杂交，从而实现了柔性电子技术的生物医学应用。