Tao Cai,Yong-Zhu Yan,Juyong Jung,Jeongmin Han,Eunseop Yeom,Yujin Im,Taekyung Lee,Di Peng,Yingzheng Liu,Chang-Sik Ha,Kyung Chun Kim
Skin-like sensors have attracted considerable attention in recent years owing to their important applications in intelligent robots, advanced medical equipment, and bionic technologies. However, most sensing skins are based on electronic systems that have many constraints and application limitations since their electronics-based structures have the disadvantages of complex structure, cannot withstand harsh environments, power supply needed, and so on. In this study, a transparent phosphorescence-based, flexible temperature-tactile multi-functional sensing skin was developed by arranging temperature-sensitive and mechanoluminescent microparticles in a polyimide . Based on the thermal-quenching of phosphorescence and mechanoluminescence, the temperature and stress signals are sensing wirelessly in the form of light. And due to the different phosphor materials, the temperature and stress signals are optically sensed and separated by wavelength. To enhance the sensitivity of tactile sensing, a unique sensor structure with protruding was constructed based on the tension effect of the polyimide solution to achieve effective tactile sensing. The temperature and tactile sensing functions of the skin were successfully demonstrated. In addition, its application to robot skin has also been verified. The current study shows the potential of the phosphorescence- based flexible sensing skin, indicating that it is a possible development direction for flexible sensing skin.
Kai Wang,Lifeng Wang,Jiawei Si,Rui Wang,Ziyuan Wang,Chuyuan Gao,Jin Yang,Xiaohan Yang,Hanqiang Zhang,Lei Han
As one of the core parts of the Internet-of-things (IOTs), multimodal sensors have exhibited great advantages in fields such as human–machine interaction, electronic skin, and environmental monitoring. However, current multimodal sensors substantially introduce a bloated equipment architecture and a complicated decoupling mechanism. In this work we propose a multimodal fusion sensing platform based on a power-dependent piecewise linear decoupling mechanism, allowing four parameters to be perceived and decoded from the passive wireless single component, which greatly broadens the configurable freedom of a sensor in the IOT. A systematic model is employed to analyze the linear sensing properties and ensure the feasibility of the scheme. The excitation power dependence provides an efficient and quantitative linear decoupling strategy of unidentified combinations for multiple stimuli. As a validation for a wearable device such as electronic skin (e-skin), the functionalized sensing film polyaniline/graphene oxide (PANI/GO) is served to synchronously monitor humidity, temperature, ultraviolet, and proximity through the mapping in resonant frequency (fs). Compared with the output errors of ∼18.00%, ∼17.50%, ∼15.00%, and ∼20.00%, the maximum experimental errors of temperature, humidity, ultraviolet, and proximity are 5.70%, 4.00%, 5.00%, and 8.30% after decoupling, respectively. In general, the developed single-component multimodal fusion sensing platform offers a strategic advantage for a miniaturization, passive wireless, and inexpensive (less than $1) signal identification system with a facile circuit layout.
危险品化学品经营许可证（带存储）