TY - JOUR AU - wang, Baocheng AU - Zhai, Xiaoying AU - Wei, Xuelian AU - Shi, Yapeng AU - Huo, Xiaoqing AU - Li, Ruonan AU - Wu, Zhiyi AU - Wang, Zhong Lin PY - 2022 TI - A self-powered and concealed sensor based on triboelectric nanogenerators for cultural-relic anti-theft systems JO - Nano Research SN - 1998-0124 SP - 8435 EP - 8441 VL - 15 IS - 9 AB - The theft prevention for cultural relics in museums, field excavation sites, and temporary exhibition events is of extreme importance. However, traditional anti-theft technologies such as infrared monitoring and radio frequency identification are highly costly, power-consuming, and easy to break. Here, a transparent, ultrathin, and flexible triboelectric sensor (TUFS) with a simple and low-cost method is proposed. With a thickness, weight, and transmittance of 92 μm, 0.12 g, and 89.4%, the TUFS manifests superb concealment. Benefiting from the characteristic of triboelectric nanogenerators, the TUFS responds effectively to common cultural-relic materials. Moreover, distinguished electrical responses can be obtained even for very small weights (10 g) and areas (1 cm2), proving the sensitivity and wide range of use of the TUFS. Finally, we construct a concealed cultural-relic anti-theft system that enables real-time alarming and accurate positioning of cultural relics, which is expected to strengthen the security level of the existing museum anti-theft systems. UR - https://doi.org/10.1007/s12274-022-4443-y DO - 10.1007/s12274-022-4443-y