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Your search keyword '"Zhi-Jun Qiu"' showing total 2 results
Start Over Author "Zhi-Jun Qiu" Topic capacitive humidity sensor
2 results on '"Zhi-Jun Qiu"'

1. Stable and Fast-Response Capacitive Humidity Sensors Based on a ZnO Nanopowder/PVP-RGO Multilayer

Author

Hui Yang, Qiangqiang Ye, Ruixue Zeng, Junkai Zhang, Lei Yue, Ming Xu, Zhi-Jun Qiu, and Dongping Wu

Subjects
ZnO nanopowders, RGO, PVP, capacitive humidity sensor, Chemical technology, TP1-1185
Abstract

In this paper, capacitive-type humidity sensors were prepared by sequentially drop-coating the aqueous suspensions of zinc oxide (ZnO) nanopowders and polyvinyl pyrrolidone–reduced graphene oxide (PVP-RGO) nanocomposites onto interdigitated electrodes. Significant improvements in both sensitivity and linearity were achieved for the ZnO/PVP-RGO sensors compared with the PVP-RGO/ZnO, PVP-RGO, and ZnO counterparts. Moreover, the produced ZnO/PVP-RGO sensors exhibited rather small hysteresis, fast response-recovery time, and long-term stability. Based on morphological and structural analyses, it can be inferred that the excellent humidity sensing properties of the ZnO/PVP-RGO sensors may be attributed to the high surface-to-volume ratio of the multilayer structure and the supporting roles of the PVP-RGO nanocomposites. The results in this work hence provide adequate guidelines for designing high-performance humidity sensors that make use of the multilayer structure of semiconductor oxide materials and PVP-RGO nanocomposites.

Published
2017
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2. Stable and Fast-Response Capacitive Humidity Sensors Based on a ZnO Nanopowder/PVP-RGO Multilayer

Author

Junkai Zhang, Dongping Wu, Ruixue Zeng, Hui Yang, Ming Xu, Lei Yue, Zhi-Jun Qiu, and Qiangqiang Ye

Subjects
Materials science, PVP, Capacitive sensing, Oxide, chemistry.chemical_element, Nanotechnology, 02 engineering and technology, Zinc, lcsh:Chemical technology, ZnO nanopowders, RGO, capacitive humidity sensor, 01 natural sciences, Biochemistry, Article, Analytical Chemistry, law.invention, chemistry.chemical_compound, law, 0103 physical sciences, lcsh:TP1-1185, Electrical and Electronic Engineering, Instrumentation, 010302 applied physics, Nanocomposite, Aqueous solution, Graphene, Humidity, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Hysteresis, chemistry, Chemical engineering, 0210 nano-technology
Abstract

In this paper, capacitive-type humidity sensors were prepared by sequentially drop-coating the aqueous suspensions of zinc oxide (ZnO) nanopowders and polyvinyl pyrrolidone–reduced graphene oxide (PVP-RGO) nanocomposites onto interdigitated electrodes. Significant improvements in both sensitivity and linearity were achieved for the ZnO/PVP-RGO sensors compared with the PVP-RGO/ZnO, PVP-RGO, and ZnO counterparts. Moreover, the produced ZnO/PVP-RGO sensors exhibited rather small hysteresis, fast response-recovery time, and long-term stability. Based on morphological and structural analyses, it can be inferred that the excellent humidity sensing properties of the ZnO/PVP-RGO sensors may be attributed to the high surface-to-volume ratio of the multilayer structure and the supporting roles of the PVP-RGO nanocomposites. The results in this work hence provide adequate guidelines for designing high-performance humidity sensors that make use of the multilayer structure of semiconductor oxide materials and PVP-RGO nanocomposites.

Published
2017

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