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High-performance optical projection controllable ZnO nanorod arrays microweighing sensor

Abstract

Optical microweighing sensor is an essential component for micro-force measurement in physical, chemical, and biological detection fields, however, its limited detection range (less than 15°) severely hinders the wide applications. Such limitation is mainly attributed to the essential restriction of traditional light reflection and optical waveguide mode. Here, we report a high-performance optical microweighing sensor based on the synergistic effect of both new optical projection mode and ZnO nanorod arrays sensor. Ascribed to this unique configuration design of sensing method, this optical microweighing sensor has a wide detection range (more than 80°) with a high sensitivity of 90 nA/deg, which is much larger than the conventional microcantilever-based optical microweighing sensors. Further, the location of the UV light source can be adjusted within a few millimeters, so the microweighing sensor does not need repetitive optical calibration. More importantly, for low height and small incident angle of UV light source, we can obtain highly sensitive microweighing properties because of the high-sensitive ZnO nanorod arrays-based UV sensor. Therefore, this kind of large detection range, non-contact and nondestructive microweighing sensor has potential applications in air quality monitoring, chemical and biological detecting.

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Supplementary files

Publication details

The article was received on 06 Dec 2017, accepted on 08 Feb 2018 and first published on 08 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR09076E
Citation: Nanoscale, 2018, Accepted Manuscript
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    High-performance optical projection controllable ZnO nanorod arrays microweighing sensor

    H. Wang, S. Jiang, L. Zhang, B. Yu, D. Chen, W. Yang and L. Qian, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C7NR09076E

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