| Summary: | 碩士 === 國立臺灣師範大學 === 光電科技研究所 === 106 === We have demonstrated a highly sensitive flexible strain sensor ,the distribution of the surface scattering medium changes after being strain by the sensor,which changes the random laser threshold. In this study, the ZnO nanorods synthesized by the hydrothermal method was randomly distributed on the flexible substrate to serve as optical scattering centers, and the gain material of rhodamin 6G (R6G) was then spin-coated to cover the entire ZnO nanorods. Consequently, by bending different strain on the flexible substrate to select an appropriate mean-free-path (MFP) for the emitted photons interacting with the ZnO nanorods, the tunable random laser can be designed and shows different spectral behaviors.This srtain sensor is superior to traditional,it can be used in various pipelines, bridges and other monitoring.in the future.
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