{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T20:29:18Z","timestamp":1778185758746,"version":"3.51.4"},"reference-count":67,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2021,2,22]],"date-time":"2021-02-22T00:00:00Z","timestamp":1613952000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100018601","name":"Guangdong Special Support Plan","doi-asserted-by":"publisher","award":["2019BT02X030"],"award-info":[{"award-number":["2019BT02X030"]}],"id":[{"id":"10.13039\/501100018601","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012234","name":"Shenzhen Peacock Plan","doi-asserted-by":"publisher","award":["KQTD20180413181702403"],"award-info":[{"award-number":["KQTD20180413181702403"]}],"id":[{"id":"10.13039\/501100012234","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100016691","name":"Guangdong Provincial Pearl River Talents Program","doi-asserted-by":"publisher","award":["2017GC010293"],"award-info":[{"award-number":["2017GC010293"]}],"id":[{"id":"10.13039\/100016691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["11974298, 61961136006, 61961136001"],"award-info":[{"award-number":["11974298, 61961136006, 61961136001"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Innovation Team Project of Department of Education of Guangdong Province","award":["2018KCXTD026"],"award-info":[{"award-number":["2018KCXTD026"]}]},{"DOI":"10.13039\/501100017596","name":"Natural Science Basic Research Program of Shaanxi Province","doi-asserted-by":"publisher","award":["2020JQ-344"],"award-info":[{"award-number":["2020JQ-344"]}],"id":[{"id":"10.13039\/501100017596","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012226","name":"Fundamental Research Funds for the Central Universities","doi-asserted-by":"publisher","award":["300102129302"],"award-info":[{"award-number":["300102129302"]}],"id":[{"id":"10.13039\/501100012226","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Fluxgate magnetic sensors are especially important in detecting weak magnetic fields. The mechanism of a fluxgate magnetic sensor is based on Faraday\u2019s law of electromagnetic induction. The structure of a fluxgate magnetic sensor mainly consists of excitation windings, core and sensing windings, similar to the structure of a transformer. To date, they have been applied to many fields such as geophysics and astro-observations, wearable electronic devices and non-destructive testing. In this review, we report the recent progress in both the basic research and applications of fluxgate magnetic sensors, especially in the past two years. Regarding the basic research, we focus on the progress in lowering the noise, better calibration methods and increasing the sensitivity. Concerning applications, we introduce recent work about fluxgate magnetometers on spacecraft, unmanned aerial vehicles, wearable electronic devices and defect detection in coiled tubing. Based on the above work, we hope that we can have a clearer prospect about the future research direction of fluxgate magnetic sensor.<\/jats:p>","DOI":"10.3390\/s21041500","type":"journal-article","created":{"date-parts":[[2021,2,22]],"date-time":"2021-02-22T20:42:51Z","timestamp":1614026571000},"page":"1500","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":84,"title":["Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3337-3466","authenticated-orcid":false,"given":"Songrui","family":"Wei","sequence":"first","affiliation":[{"name":"Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China"}]},{"given":"Xiaoqi","family":"Liao","sequence":"additional","affiliation":[{"name":"College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China"},{"name":"\u00c5ngstr\u00f6m Laboratory, Department of Engineering Sciences, Uppsala University, 75121 Uppsala, Sweden"}]},{"given":"Han","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China"}]},{"given":"Jianhua","family":"Pang","sequence":"additional","affiliation":[{"name":"Shenzhen Institute of Guangdong Ocean University, International Biological Valley, Dapeng District, Shenzhen 518060, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5641-9191","authenticated-orcid":false,"given":"Yan","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Dentith, M., and Mudge, S.T. (2014). Geophysics for the Mineral Exploration Geoscientist, Cambridge University Press.","DOI":"10.1017\/CBO9781139024358"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"653","DOI":"10.1007\/s10712-005-1760-0","article-title":"Mining, environmental, petroleum, and engineering industry applications of electromagnetic techniques in geophysics","volume":"26","author":"Sheard","year":"2005","journal-title":"Sur. Geophys."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1007\/s12517-017-3265-9","article-title":"Use of time-domain electromagnetic (TDEM) method to investigate seawater intrusion in the Lebna coastal aquifer of eastern Cap Bon, Tunisia","volume":"10","author":"Ziadi","year":"2017","journal-title":"Arab. J. Geosci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1007\/s10921-018-0511-3","article-title":"Transient eddy current NDE system based on fluxgate sensor for the detection of defects in multilayered conducting material","volume":"37","author":"Nagendran","year":"2018","journal-title":"J. Nondestr. Eval."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Wang, H., Chen, S., Zhang, S., Yuan, Z., Zhang, H., Fang, D., and Zhu, J. (2017). A high-performance portable transient electro-magnetic sensor for unexploded ordnance detection. Sensors, 17.","DOI":"10.3390\/s17112651"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3555","DOI":"10.1109\/TIM.2015.2444258","article-title":"Self-oscillating fluxgate-based quasi-digital sensor for DC high-current measurement","volume":"64","author":"Wang","year":"2015","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"4100","DOI":"10.1109\/TIA.2015.2434875","article-title":"Novel principle for flux sensing in the application of a DC+ AC current sensor","volume":"51","author":"Schrittwieser","year":"2015","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"4002804","DOI":"10.1109\/TMAG.2014.2358671","article-title":"Design and realization of a novel compact fluxgate current sensor","volume":"51","author":"Yang","year":"2015","journal-title":"IEEE Trans. Magn."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"4005704","DOI":"10.1109\/TMAG.2014.2330373","article-title":"A new compact fluxgate current sensor for AC and DC application","volume":"50","author":"Yang","year":"2014","journal-title":"IEEE Trans. Magn."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4005504","DOI":"10.1109\/TMAG.2015.2452267","article-title":"A fluxgate current sensor with a U-shaped magnetic gathering shell","volume":"51","author":"Yang","year":"2015","journal-title":"IEEE Trans. Magn."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1109\/TIM.2016.2644918","article-title":"Flexible microwire residence times difference fluxgate magnetometer","volume":"66","author":"Trigona","year":"2017","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"11819","DOI":"10.1109\/JSEN.2019.2936552","article-title":"Performance Degradation Effect Countermeasures in Residence Times Difference (RTD) Fluxgate Magnetic Sensors","volume":"19","author":"Li","year":"2019","journal-title":"IEEE Sens. J."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Wrzecionko, B., Steinmann, L., and Kolar, J.W. (2012, January 2\u20135). Fast high-temperature (250 \u00b0C\/500 \u00b0F) isolated dc and ac current measurement: Bidirectionally saturated current transformer. Proceedings of the 7th International Power Electronics and Motion Control Conference, Harbin, China.","DOI":"10.1109\/IPEMC.2012.6258777"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"5404","DOI":"10.1109\/TPEL.2013.2247632","article-title":"High-bandwidth high-temperature (250 \u00b0C\/500 \u00b0F) isolated DC and AC current measurement: Bidirectionally saturated current transformer","volume":"28","author":"Wrzecionko","year":"2013","journal-title":"IEEE Trans. Power Electron."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Szewczyk, R., Ostaszewska-Li\u017cewska, A., and R\u00e5back, P. (2020). Modelling the Fluxgate Sensors with Magnetic Field Concentrators. Acta Phys. Pol. A, 137.","DOI":"10.12693\/APhysPolA.137.700"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"868","DOI":"10.1109\/JSEN.2019.2943893","article-title":"Sensitivity Model for Residence Times Difference Fluxgate Magnetometers Near Zero Magnetic Field","volume":"20","author":"Chen","year":"2019","journal-title":"IEEE Sens. J."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"015016","DOI":"10.1088\/0960-1317\/20\/1\/015016","article-title":"EL device pad-printed on a curved surface","volume":"20","author":"Lee","year":"2009","journal-title":"J. Micromech. Microeng."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"484","DOI":"10.1016\/j.solmat.2008.09.003","article-title":"Pad printing as a film forming technique for polymer solar cells","volume":"93","author":"Krebs","year":"2009","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"491","DOI":"10.1016\/j.snb.2004.11.005","article-title":"Evaluation of a novel pad printing technique for the fabrication of disposable electrode assemblies","volume":"107","author":"Mooring","year":"2005","journal-title":"Sens. Actuators B"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"025114","DOI":"10.1063\/1.5130393","article-title":"Dependence of the noise of an orthogonal fluxgate on the composition of its amorphous wire-core","volume":"10","author":"Butta","year":"2020","journal-title":"AIP Adv."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1508","DOI":"10.1109\/TMAG.2011.2173177","article-title":"Sources of noise in a magnetometer based on orthogonal fluxgate operated in fundamental mode","volume":"48","author":"Butta","year":"2012","journal-title":"IEEE Trans. Magn."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1295","DOI":"10.1166\/sl.2014.3311","article-title":"Method for offset suppression in orthogonal fluxgate with annealed wire core","volume":"12","author":"Butta","year":"2014","journal-title":"Sens. Lett."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"2002805","DOI":"10.1109\/TMAG.2018.2850905","article-title":"Effect of amorphous wire core diameter on the noise of an orthogonal fluxgate","volume":"54","author":"Butta","year":"2018","journal-title":"IEEE Trans. Magn."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"P05007","DOI":"10.1088\/1748-0221\/15\/05\/P05007","article-title":"Excitation module for orthogonal fundamental mode fluxgate sensor","volume":"15","author":"Song","year":"2020","journal-title":"J. Instrum."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2552","DOI":"10.1109\/TIM.2019.2949205","article-title":"1-pT noise fluxgate magnetometer for geomagnetic measurements and unshielded magnetocardiography","volume":"69","author":"Janosek","year":"2019","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_26","first-page":"30","article-title":"The FGE magnetometer and the INTERMAGNET 1 second standard","volume":"2","author":"Pedersen","year":"2016","journal-title":"J. Ind. Geophys. Union"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1077","DOI":"10.1007\/s10948-014-2636-7","article-title":"Precise magnetic sensors for navigation and prospection","volume":"28","author":"Ripka","year":"2015","journal-title":"J. Supercond. Novel Magn."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"015202","DOI":"10.1088\/0957-0233\/19\/1\/015202","article-title":"Miniaturized digital fluxgate magnetometer for small spacecraft applications","volume":"19","author":"Forslund","year":"2007","journal-title":"Meas. Sci. Technol."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Chave, A.D., and Jones, A.G. (2012). The Magnetotelluric Method: Theory and Practice, Cambridge University Press.","DOI":"10.1017\/CBO9781139020138"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/TMAG.2013.2292834","article-title":"A low-noise fundamental-mode orthogonal fluxgate magnetometer","volume":"50","author":"Bazinet","year":"2013","journal-title":"IEEE Trans. Magn."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"105601","DOI":"10.1088\/1361-6501\/aad613","article-title":"Correlation of defect depth with diffusion time of eddy currents for the defects in conducting materials using transient eddy current NDE","volume":"29","author":"Mohanty","year":"2018","journal-title":"Meas. Sci. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1047","DOI":"10.1088\/0031-9155\/59\/4\/1047","article-title":"Development of a magnetic nanoparticle susceptibility magnitude imaging array","volume":"59","author":"Ficko","year":"2014","journal-title":"Phys. Med. Biol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1002\/ecj.11645","article-title":"Development of a One-Dimensional Fluxgate Array and Its Application to Magnetocardiogram Measurements","volume":"98","author":"Harada","year":"2015","journal-title":"Electron. Commun. Jpn."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"3678","DOI":"10.1063\/1.1149158","article-title":"Signal-to-noise improvement of bio-magnetic signals using a flux-gate probe and real time signal processing","volume":"69","author":"Dolabdjian","year":"1998","journal-title":"Rev. Sci. Instrum."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1983","DOI":"10.1109\/20.951028","article-title":"Dependence of sensitivity and noise of fluxgate sensors on racetrack geometry","volume":"37","author":"Hinnrichs","year":"2001","journal-title":"IEEE Trans. Magn."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Jano\u0161ek, M., Vyhn\u00e1nek, J., Zikmund, A., Butvin, P., and Butvinov\u00e1, B. (2014). Effects of core dimensions and manufacturing procedure on fluxgate noise. Acta Phys. Pol. A.","DOI":"10.12693\/APhysPolA.126.104"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1059","DOI":"10.1007\/s10712-012-9197-8","article-title":"Flux-gate magnetometers design peculiarities","volume":"33","author":"Korepanov","year":"2012","journal-title":"Sur. Geophys."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"1897","DOI":"10.1063\/1.1358852","article-title":"Low-noise flux-gate magnetic-field sensors using ring-and rod-core geometries","volume":"78","author":"Koch","year":"2001","journal-title":"Appl. Phys. Lett."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"301","DOI":"10.5194\/gi-6-301-2017","article-title":"Possibilities of further improvement of 1 s fluxgate variometers","volume":"6","author":"Marusenkov","year":"2017","journal-title":"Geosci. Instrum. Methods Data Syst."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"7789","DOI":"10.1063\/1.1451899","article-title":"Orthogonal fluxgate mechanism operated with dc biased excitation","volume":"91","author":"Sasada","year":"2002","journal-title":"J. Appl. Phys."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"052087","DOI":"10.1088\/1755-1315\/446\/5\/052087","article-title":"Study on the calibration method for tri-axis fluxgate gradiometer","volume":"446","author":"Xu","year":"2020","journal-title":"IOP Conf. Ser. Earth Environ. Sci."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"4183","DOI":"10.1109\/TIE.2019.2914574","article-title":"A New Calibration Method for Triaxial Fluxgate Magnetometer Based on Magnetic Shielding Room","volume":"67","author":"Pan","year":"2019","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1109\/19.377852","article-title":"Vectorial calibration of 3D magnetic field sensor arrays","volume":"44","author":"Lassahn","year":"1995","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"055106","DOI":"10.1088\/1361-6501\/aa58b9","article-title":"A three-step calibration method for tri-axial field sensors in a 3D magnetic digital compass","volume":"28","author":"Zhu","year":"2017","journal-title":"Meas. Sci. Technol."},{"key":"ref_45","unstructured":"K\u00fcgler, H. (2001, January 12\u201314). Simulation of DC magnetic environment on ground. Proceedings of the Fourth International Symposium Environmental Testing for Space Programmes, Palais de Congr\u00e8s, Li\u00e8ge, Belgium."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"1242","DOI":"10.1109\/TIM.2015.2395531","article-title":"Precise calibration method for triaxial magnetometers not requiring earth\u2019s field compensation","volume":"64","author":"Zikmund","year":"2015","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_47","doi-asserted-by":"crossref","unstructured":"Petrucha, V., and Kaspar, P. (2009, January 25\u201328). Calibration of a triaxial fluxgate magnetometer and accelerometer with an automated non-magnetic calibration system. Proceedings of the SENSORS, 2009 IEEE, Christchurch, New Zealand.","DOI":"10.1109\/ICSENS.2009.5398466"},{"key":"ref_48","first-page":"5670","article-title":"Integrated compensation of magnetometer array magnetic distortion field and improvement of magnetic object localization","volume":"52","author":"Pang","year":"2013","journal-title":"IEEE Trans. Geosci. Electron."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1016\/j.sna.2007.10.066","article-title":"Racetrack fluxgate sensor core demagnetization factor","volume":"143","author":"Kubik","year":"2008","journal-title":"Sens. Actuators A"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1515\/cdbme-2015-0006","article-title":"New type of fluxgate magnetometer for the heart\u2019s magnetic fields detection","volume":"1","author":"Rybalko","year":"2015","journal-title":"Curr. Direct. Biomed. Eng."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Valadeiro, J., Cardoso, S., Macedo, R., Guedes, A., Gaspar, J., and Freitas, P.P. (2016). Hybrid integration of magnetoresistive sensors with MEMS as a strategy to detect ultra-low magnetic fields. Micromachines, 7.","DOI":"10.3390\/mi7050088"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"667","DOI":"10.1109\/TIM.2010.2089576","article-title":"Exploiting nonlinear dynamics in novel measurement strategies and devices: From theory to experiments and applications","volume":"60","author":"Baglio","year":"2011","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.sna.2007.04.013","article-title":"Towards an optimal readout of a residence times difference (RTD) fluxgate magnetometer","volume":"142","author":"Ascia","year":"2008","journal-title":"Sens. Actuators A"},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"Yang, X., Wen, J., Chen, M., Gao, Z., Xi, L., and Li, Y. (2020). Analysis and design of a self-oscillating bidirectionally saturated fluxgate current sensor. Measurement, 107687.","DOI":"10.1016\/j.measurement.2020.107687"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/TASC.2019.2957198","article-title":"Characterization of TDEM System with SQUID and Fluxgate Magnetometers for Geophysical Applications","volume":"30","author":"Ramasamy","year":"2019","journal-title":"IEEE Trans. Appl. Supercond."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"384","DOI":"10.26464\/epp2020058","article-title":"Mars Orbiter magnetometer of China\u2019s First Mars Mission Tianwen-1","volume":"4","author":"Liu","year":"2020","journal-title":"Earth Planet. Phys."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"e2019EA001061","DOI":"10.1029\/2019EA001061","article-title":"Analysis of Eddy current generation on the Juno spacecraft in Jupiter\u2019s magnetosphere","volume":"7","author":"Kotsiaros","year":"2020","journal-title":"Earth Space Sci."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"2307","DOI":"10.1111\/1365-2478.12991","article-title":"Aerial magnetic mapping with an unmanned aerial vehicle and a fluxgate magnetometer: A new method for rapid mapping and upscaling from the field to regional scale","volume":"68","author":"Bertrand","year":"2020","journal-title":"Geophys. Prospect."},{"key":"ref_59","doi-asserted-by":"crossref","unstructured":"Schoinas, S., El Guamra, A.-M., Moreillon, F., and Passeraub, P. (2020). Fabrication and Characterization of a Flexible Fluxgate Sensor with Pad-Printed Solenoid Coils. Sensors, 20.","DOI":"10.3390\/s20082275"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1016\/j.solmat.2008.10.004","article-title":"Fabrication and processing of polymer solar cells: A review of printing and coating techniques","volume":"93","author":"Krebs","year":"2009","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"1800546","DOI":"10.1002\/admt.201800546","article-title":"Printing conductive nanomaterials for flexible and stretchable electronics: A review of materials, processes, and applications","volume":"4","author":"Huang","year":"2019","journal-title":"Adv. Mater. Technol."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1080\/17452759.2016.1217586","article-title":"A review of printed passive electronic components through fully additive manufacturing methods","volume":"11","author":"Tan","year":"2016","journal-title":"Virtual Phys. Prototyp."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"3164","DOI":"10.1109\/JSEN.2014.2375203","article-title":"Technologies for printing sensors and electronics over large flexible substrates: A review","volume":"15","author":"Khan","year":"2014","journal-title":"IEEE Sens. J."},{"key":"ref_64","doi-asserted-by":"crossref","unstructured":"Zhou, Z., Zhang, J., Wang, C., Wan, F., He, S., and Yu, R. (2020). Non-Magnetization Detection of Arbitrary Direction Defects in Coiled Tubing Based on Fluxgate Sensor. IEEE Sens. J.","DOI":"10.1109\/JSEN.2020.2979497"},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"449","DOI":"10.1016\/S0963-8695(02)00024-5","article-title":"Advanced signal processing of magnetic flux leakage data obtained from seamless gas pipeline","volume":"35","author":"Afzal","year":"2002","journal-title":"NDT&E Int."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"382","DOI":"10.1016\/j.jmmm.2011.08.048","article-title":"A review of three magnetic NDT technologies","volume":"324","author":"Wang","year":"2012","journal-title":"J. Magn. Magn. Mater."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1016\/j.measurement.2017.02.051","article-title":"The axial crack testing model for long distance oil-gas pipeline based on magnetic flux leakage internal inspection method","volume":"103","author":"Liu","year":"2017","journal-title":"Measurement"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/4\/1500\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:27:40Z","timestamp":1760160460000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/4\/1500"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,2,22]]},"references-count":67,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2021,2]]}},"alternative-id":["s21041500"],"URL":"https:\/\/doi.org\/10.3390\/s21041500","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,2,22]]}}}