Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR 999077, China.
Hong Kong Centre for Cerebro-Cardiovascular Health Engineering (COCHE), Hong Kong SAR 999077, China.
Sci Adv. 2024 Jan 12;10(2):eadk6301. doi: 10.1126/sciadv.adk6301. Epub 2024 Jan 10.
Miniaturized mobile electronic system is an effective candidate for in situ exploration of confined spaces. However, realizing such system still faces challenges in powering issue, untethered mobility, wireless data acquisition, sensing versatility, and integration in small scales. Here, we report a battery-free, wireless, and miniaturized soft electromagnetic swimmer (SES) electronic system that achieves multiple monitoring capability in confined water environments. Through radio frequency powering, the battery-free SES system demonstrates untethered motions in confined spaces with considerable moving speed under resonance. This system adopts soft electronic technologies to integrate thin multifunctional bio/chemical sensors and wireless data acquisition module, and performs real-time water quality and virus contamination detection with demonstrated promising limits of detection and high sensitivity. All sensing data are transmitted synchronously and displayed on a smartphone graphical user interface via near-field communication. Overall, this wireless smart system demonstrates broad potential for confined space exploration, ranging from pathogen detection to pollution investigation.
微型化移动电子系统是原位探测封闭空间的有效候选者。然而，实现这样的系统仍然面临着供电问题、无束缚移动性、无线数据采集、传感多功能性以及小型化集成等挑战。在这里，我们报告了一种无需电池、无线和微型化的软电磁游泳者（SES）电子系统，该系统在封闭水环境中实现了多种监测能力。通过射频供电，无电池 SES 系统在共振下展示了在封闭空间中具有相当高速度的无束缚运动。该系统采用软电子技术集成了薄型多功能生物/化学传感器和无线数据采集模块，并进行实时水质和病毒污染检测，具有有前景的检测限和高灵敏度。所有传感数据通过近场通信同步传输并显示在智能手机图形用户界面上。总的来说，这个无线智能系统在封闭空间探测方面具有广泛的应用潜力，从病原体检测到污染调查。
