{"title":"An ultralow-noise Ag/AgCl electric field sensor with good stability for marine EM applications","authors":"Zhen-Dong Wang, M. Deng, Kai Chen, Meng Wang","doi":"10.1109/ICSENST.2013.6727752","DOIUrl":null,"url":null,"abstract":"This paper presents an ultralow-noise level of Ag/AgCl electric field sensor for detecting seafloor electric field signals. During the anodization process, we used a constant current and a constant potential for achieving the ultralow-noise level and for improving the stability and repeatability of the Ag/AgCl electric field sensor, respectively. We took advantage of newly developed materials to generate high-quality Ag/AgCl electric field sensors. Typical measured noise level is 0.6 nV/rt(Hz) at 1 Hz. The source resistance between pairs of Ag/AgCl electric field sensors is approximately 5 Ω, almost independent of frequency between 0.1 Hz and 10 Hz. The offset potential is typically below 0.1 mV with a drift of less than 5 μV/day and less than 10 μV/°C. This Ag/AgCl electric field sensor has promise for improving the accuracy of marine electric field measurements.","PeriodicalId":374655,"journal":{"name":"2013 Seventh International Conference on Sensing Technology (ICST)","volume":"75 5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 Seventh International Conference on Sensing Technology (ICST)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSENST.2013.6727752","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
This paper presents an ultralow-noise level of Ag/AgCl electric field sensor for detecting seafloor electric field signals. During the anodization process, we used a constant current and a constant potential for achieving the ultralow-noise level and for improving the stability and repeatability of the Ag/AgCl electric field sensor, respectively. We took advantage of newly developed materials to generate high-quality Ag/AgCl electric field sensors. Typical measured noise level is 0.6 nV/rt(Hz) at 1 Hz. The source resistance between pairs of Ag/AgCl electric field sensors is approximately 5 Ω, almost independent of frequency between 0.1 Hz and 10 Hz. The offset potential is typically below 0.1 mV with a drift of less than 5 μV/day and less than 10 μV/°C. This Ag/AgCl electric field sensor has promise for improving the accuracy of marine electric field measurements.
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