Fast micrometer resolution magneto-optical viscosity measurements with hard magnetic nanoplatelets

Sensors International Pub Date : 2025-01-01 DOI:10.1016/j.sintl.2025.100337

Artem Eliseev , Vladimir Korolev , Evgeny Anokhin , Andrei Chumakov , Alexander Vasiliev , Lev Trusov , Pavel Kazin , Andrei Eliseev

{"title":"Fast micrometer resolution magneto-optical viscosity measurements with hard magnetic nanoplatelets","authors":"Artem Eliseev , Vladimir Korolev , Evgeny Anokhin , Andrei Chumakov , Alexander Vasiliev , Lev Trusov , Pavel Kazin , Andrei Eliseev","doi":"10.1016/j.sintl.2025.100337","DOIUrl":null,"url":null,"abstract":"<div><div>The paper reports on the application of hard magnetic nanoplatelets for direct local dynamic viscosity evaluation in liquids through their drag-hindered rotation after a magnetic field. Strontium hexaferrite, SrFe<sub>12</sub>O<sub>19</sub> nanoplatelets with a diameter of 50 nm and a thickness of 5 nm were employed as nanoscale probes. The dynamics of nanoplatelets is investigated with AC magnetometry, small-angle X-ray scattering, and optical absorption/reflectance spectroscopy. Those reveal well-defined relation of drag force and phase lag tangent for platelets rotation under AC magnetization with the viscosity of the medium. The analytical quantitative description for magneto-optical response is provided and utilized successfully for independent viscosity evaluation of various liquids within the viscosity range of 0.5–1000 mPa∙s. The nanoscale size of the probes also enabled viscosity visualization with micrometer resolution in microchannels.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100337"},"PeriodicalIF":0.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors International","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666351125000129","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The paper reports on the application of hard magnetic nanoplatelets for direct local dynamic viscosity evaluation in liquids through their drag-hindered rotation after a magnetic field. Strontium hexaferrite, SrFe₁₂O₁₉ nanoplatelets with a diameter of 50 nm and a thickness of 5 nm were employed as nanoscale probes. The dynamics of nanoplatelets is investigated with AC magnetometry, small-angle X-ray scattering, and optical absorption/reflectance spectroscopy. Those reveal well-defined relation of drag force and phase lag tangent for platelets rotation under AC magnetization with the viscosity of the medium. The analytical quantitative description for magneto-optical response is provided and utilized successfully for independent viscosity evaluation of various liquids within the viscosity range of 0.5–1000 mPa∙s. The nanoscale size of the probes also enabled viscosity visualization with micrometer resolution in microchannels.

Abstract Image

查看原文本刊更多论文

快速微米分辨率磁光粘度测量与硬磁性纳米片

本文报道了硬磁性纳米片在磁场作用下通过阻阻旋转直接评价液体局部动态粘度的应用。采用直径为50 nm、厚度为5 nm的六铁体锶、SrFe12O19纳米薄片作为纳米探针。用交流磁强计、小角x射线散射和光学吸收/反射光谱法研究了纳米血小板的动力学。这些结果表明，在交流磁化条件下，血小板旋转的阻力和相位滞后切线与介质粘度有明确的关系。提供了磁光响应的分析定量描述，并成功地用于粘度范围为0.5-1000 mPa∙s的各种液体的独立粘度评估。探针的纳米级尺寸还可以在微通道中以微米级分辨率显示粘度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Sensors International

CiteScore

17.40

自引率

0.00%

发文量