An Azo-PDMS-based wearable UV sensor with the optimized photo response mode for dual sensing and synchronous detection
A wearable UV sensor is designed to realize UV detection and a warning effect on people’s excessive UV exposure. It is noteworthy that the photoelectric system and supporting material of the most conventional sensor are separated. The unstable connection between the two components and the complicated construction method makes the sensor susceptible to external motion interference and prone to failure. Herein, we developed a unique photo response mode of the UV sensor based on a novel photo responsive material. An azobenzene-containing polydimethylsiloxane (Azo-PDMS) film was prepared as the outer layer of the sensor. It integrated the functions of photo response source, support and protection, which realized the direct contact and rapid response to the UV light source. Carbon nanotube (CNT), wrapped in the middle of Azo-PDMS films as an inner layer, transformed the photomechanical response signal into the photoelectric signal. The photo response mode endows the sensor with excellent anti-motion interference capabilities and a true sense of UV-strain synchronous monitoring performance, which is of great significance to the practical application of wearable devices. In addition, based on the excellent properties of Azo-PDMS, the sensor can also protect the human body from UV damage, self-repair after fracture, and realize personalized customization through 3D printing. It makes a breakthrough in the design and construction of wearable UV sensors and paves a new way to optimize sensor photo response modes.
危险品化学品经营许可证（带存储）