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| 1 | Improved and excellent CO sensing properties of Cu-doped TiO_2 nanofibers显示文摘Cu-doped TiO2 nanofibers with an average diameter of about 80 nm are synthesized through an electrospinning method. Both anatase and rutile crystallographic structures are found in the fibers based on XRD results. Compared with pure TiO2 nanofibers, the Cu-doped TiO2 nanofibers exhibit improved CO sensing properties at 300°C. The sensitivity of Cu-doped TiO2 nanofibers is up to 3 when the sensor is exposed to 5 ppm CO, and the response and recovery times are about 4 and 8 s, respectively. Good selectivity is also observed in our investigations. These results indicate that the Cu-doped TiO2 nanofibers can be used to fabricate high performance CO sensors in practice. | WANG Biao ZHAO YuDong HU LiMing CAO JunSheng GAO FengLi LIU Yun WANG LiJun | 2010 | Chinese Science Bulletin2010，55，3： | 3 |
| 2 | An Azo-PDMS-based wearable UV sensor with the optimized photo response mode for dual sensing and synchronous detection显示文摘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 3 D 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. | QI YuHao ZHENG JunPing | 2022 | Science China(Technological Sciences)2022，65，1： | 2 |
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