Artificial skin to sense mechanical stress by visible light emission

作者：Chao‐Nan Xu, Toshiro Watanabe, Morito Akiyama, 旭光 鄭 · 发表于：Applied Physics Letters · 年份：1999 · DOI：10.1063/1.123510 · 被引用次数：478 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Quantum Dots Synthesis And Properties、Conducting polymers and applications

The idea and successful practice of a stress sensor to sense mechanical stress by an artificial skin, i.e., self-diagnosis thin film, has been realized, through the fabrication of a high-luminescence thin piezoelectric film which can reproducibly emit strong visible light upon stressing. The strongest luminescent film consists of nanosized crystallites of ZnS doped with 1.5 at. % Mn, in which Mn acts as the emitting center. The intensity of the emitted luminescence responds to stress applied directly onto the film or to the underlying material reversibly and reproducibly, so it can be used as an artificial skin to sense mechanical stress.