Artem Eliseev , Vladimir Korolev , Evgeny Anokhin , Andrei Chumakov , Alexander Vasiliev , Lev Trusov , Pavel Kazin , Andrei Eliseev
{"title":"快速微米分辨率磁光粘度测量与硬磁性纳米片","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":"{\"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}","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}
Fast micrometer resolution magneto-optical viscosity measurements with hard magnetic nanoplatelets
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.
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