Picometer-Scale Optical Electrohydrodynamic Sensing Method Based on F–P Interferometry

IF 3.8

ACS Applied Optical Materials Pub Date : 2025-06-09 DOI:10.1021/acsaom.5c00109

Li Wang, Liang Wang, Lin Fu, Fouad Belhora and Jia-Wei Zhang*,

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引用次数: 0

Abstract

Accurate measurement of propulsion generated by electrohydrodynamics (EHD) contributes to the assessment of the thrust efficiency of drones and electric aircraft and may provide benefits in sustainability and stability. Here, we propose an electrohydrodynamic (EHD) measurement system based on an optical Fabry–Perot (F–P) sensor which senses the EHD thrust generated by a bipolar corona discharge via an elastic sensitive element. Static calibration experiments of the sensor were performed under such a pin-plate corona discharge system. The dynamic output characteristics of the sensors were tested under corona discharges with different polarities and discharge distances. The results show that the sensor has a linear operating region of 4–7 kV, a linearity of 99.6%, and a sensitivity of 257.7 pm/kV. Negative corona discharge leads to a higher spectral offset of the sensor compared with positive corona discharge. Continuous and simultaneous ionic wind sensing via an optical EHD sensor should provide accurate information about the performance of the propulsion system and contribute to the enhancement of the dynamic stability of the EHD actuator system.

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基于F-P干涉测量的皮米尺度光学电流体动力传感方法

电流体动力学（EHD）产生的推进力的精确测量有助于评估无人机和电动飞机的推力效率，并可能提供可持续性和稳定性方面的好处。本文提出了一种基于光学法布里-珀罗（F-P）传感器的电流体动力（EHD）测量系统，该系统通过弹性敏感元件检测双极电晕放电产生的EHD推力。在针板电晕放电系统下对传感器进行了静态标定实验。在不同极性和放电距离的电晕放电条件下，测试了传感器的动态输出特性。结果表明，该传感器的线性工作范围为4 ~ 7 kV，线性度为99.6%，灵敏度为257.7 pm/kV。与正电晕放电相比，负电晕放电导致传感器的光谱偏移更高。通过光学EHD传感器进行连续和同步的离子风传感，可以提供有关推进系统性能的准确信息，并有助于增强EHD执行器系统的动态稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Optical Materials 材料科学-光学材料-

CiteScore

1.10

自引率

0.00%

发文量

期刊介绍： ACS Applied Optical Materials is an international and interdisciplinary forum to publish original experimental and theoretical including simulation and modeling research in optical materials complementing the ACS Applied Materials portfolio. With a focus on innovative applications ACS Applied Optical Materials also complements and expands the scope of existing ACS publications that focus on fundamental aspects of the interaction between light and matter in materials science including ACS Photonics Macromolecules Journal of Physical Chemistry C ACS Nano and Nano Letters.The scope of ACS Applied Optical Materials includes high quality research of an applied nature that integrates knowledge in materials science chemistry physics optical science and engineering.