Wireless imaging, equipped with ultralow power wireless communications and energy harvesting (EH) capabilities, have emerged as battery-free and sustainable solutions. However, the challenge of implementing wireless colour imaging in wearable applications remains, primarily due to high power demands and the need to balance energy harvesting efficiency with device compactness. To address these issues, we propose a flexible and wearable battery-free backscatter wireless communication system specially designed for colour imaging. The system features a hybrid RF-solar EH array that efficiently harvests energy from both ambient RF and visible light energy, ensuring continuous operation in diverse environments. Moreover, flexible materials allow the working system to conform to the human body, ensuring comfort, user-friendliness, and safety. Furthermore, a compact design utilizing a shared-aperture antenna array for simultaneous wireless information and power transfer (SWIPT), coupled with an optically transparent stacked structure. This design not only optimizes space but also maintains the performance of both communication and EH processes. The proposed flexible and wearable systems for colour imaging would have potentially applications in environmental monitoring, object detection, and law enforcement recording. This approach demonstrates a sustainable and practical solution for the next generation of wearable, power-demanding devices.

无线成像配备超低功耗无线通信和能量收集 (EH) 功能，已成为无电池且可持续的解决方案。然而，在可穿戴应用中实现无线彩色成像的挑战仍然存在，这主要是由于高功率需求以及平衡能量收集效率与设备紧凑性的需要。为了解决这些问题，我们提出了一种专为彩色成像设计的灵活且可穿戴的无电池反向散射无线通信系统。该系统采用混合射频-太阳能 EH 阵列，可有效地从环境射频和可见光能量中收集能量，确保在不同环境下连续运行。此外，柔性材料使工作系统符合人体，确保舒适性、用户友好性和安全性。此外，紧凑的设计利用共享孔径天线阵列进行同步无线信息和电力传输（SWIPT），并结合光学透明的堆叠结构。这种设计不仅优化了空间，还保持了通信和 EH 流程的性能。所提出的灵活且可穿戴的彩色成像系统将在环境监测、物体检测和执法记录方面具有潜在的应用。这种方法为下一代可穿戴、高功率设备展示了可持续且实用的解决方案。