共查询到20条相似文献,搜索用时 156 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
以具有大的表面积及特殊的中空结构的碳纳米管(CNT)作为气敏传感器敏感层材料为基础,介绍了CNT在开发不同类型气敏传感器技术方面的最新进展。综述了CNT及以贵金属、金属氧化物、聚合物改性的CNT作为气敏传感器材料的研究现状,并以气敏传感器的灵敏度和响应速度为标准,对比了CNT与三种CNT复合材料作为气敏传感器敏感层的优缺点。总结了每种传感器的设计方法、制作工艺和传感机理,提出了CNT气敏传感器当前面临的技术挑战,并对以后CNT作为气敏传感器材料的发展进行展望。 相似文献
9.
10.
11.
Diogo P. Volanti Anderson A. Felix Marcelo O. Orlandi George Whitfield Dae‐Jin Yang Elson Longo Harry L. Tuller José A. Varela 《Advanced functional materials》2013,23(14):1759-1766
The development of gas sensors with innovative designs and advanced functional materials has attracted considerable scientific interest given their potential for addressing important technological challenges. This work presents new insight towards the development of high‐performance p‐type semiconductor gas sensors. Gas sensor test devices, based on copper (II) oxide (CuO) with innovative and unique designs (urchin‐like, fiber‐like, and nanorods), are prepared by a microwave‐assisted synthesis method. The crystalline composition, surface area, porosity, and morphological characteristics are studied by X‐ray powder diffraction, nitrogen adsorption isotherms, field‐emission scanning electron microscopy and high‐resolution transmission electron microscopy. Gas sensor measurements, performed simultaneously on multiple samples, show that morphology can have a substantial influence on gas sensor performance. An assembly of urchin‐like structures is found to be most effective for hydrogen detection in the range of parts‐per‐million at 200 °C with 300‐fold larger response than the previously best reported values for semiconducting CuO hydrogen gas sensors. These results show that morphology plays an important role in the gas sensing performance of CuO and can be effectively applied in the further development of gas sensors based on p‐type semiconductors. 相似文献
12.
13.
柔性传感器是一种新型的电子器件,具有体积小、可弯曲、可伸缩等优点,性能极佳,具有重要的研究价值。近年来,世界各国都在加紧研究高性能的柔性传感器,一定程度上扩大了柔性传感器的应用范围,如医疗健康、智能家居、机器人等领域。文中对基于喷墨打印的柔性传感器制备工艺展开了研究,具体分析了柔性传感器的设计方法、性能、优势以及具体应用领域。在大数据时代背景下,随着各种前沿科技的不断发展,传感器的生产规模和经济规模将持续扩大,并将会有更广阔的发展空间,催生新的市场。 相似文献
14.
15.
ZnO是一种带隙宽度约为3.0 eV的Ⅱ-Ⅵ族n型半导体材料,其具有优异的光学性能、压电性能和电化学性能,广泛应用于传感器、太阳电池和催化净化等领域。介绍了目前纳米ZnO的主要制备方法,包括水热法、电化学沉积法和磁控溅射法,分析对比了每种制备方法的优缺点。着重介绍了纳米ZnO材料在气体、生物以及光电传感器领域的研究进展,概括了制约纳米ZnO传感器件发展的影响因素。高性能纳米ZnO材料不仅在传感领域将会有良好的应用前景,而且能促进光电、医疗以及工业生产等行业的快速发展。最后,对纳米ZnO传感器目前所面临的挑战和未来的发展趋势进行了展望和总结。 相似文献
16.
17.
18.
19.
20.
Time-to-digital conversion is investigated as a new method to record highly sensitive responses of semiconductor gas sensors. The method is evaluated by exposing metal oxide gas sensors to very low carbon monoxide (CO) concentrations. The noise equivalent detection limit is about 0.5 ppb CO 相似文献