Synthesis of C 60 -Coated Ferric Oxide and Its Application in Detecting Magnetic Field
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ORIGINAL PAPER
Synthesis of C60-Coated Ferric Oxide and Its Application in Detecting Magnetic Field Jianqiao Song 1 & Qiang Zhang 1,2,3 & Shirui Pan 1 & Yi Du 1 & Zhifang Wu 2,3 & Sijin Li 2,3 & Wendong Zhang 1 & Shengbo Sang 1 Received: 18 March 2020 / Accepted: 10 September 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Dispersibility and magnetic response characteristics of magnetic nanoparticles is crucial to the sensitivity and stability of flexible magnetic field sensors. To improve the performance of magnetic nanoparticles, this paper reported a preparation method of the fullerene-coated ferric oxide (C60@Fe3O4) magnetic nanocomposites. The TEM results showed that the C60@Fe3O4 has uniform dispersion and consistent particle size, and C60 particles are distributed on the surface of Fe3O4, forming a coating structure. The X-ray diffraction, Fourier transform infrared spectroscopy, and energy dispersion spectroscopy results further proved that the compositions of the nanomaterials are Fe3O4 and C60. The VSM hysteresis loop of the nanocomposites showed good performance in magnetic response. Then, styrene ethylene butylene Styrene (SEBS), the C60@Fe3O4 magnetic nanoparticles, and CNTs, which were used as flexible substrate, magnetic sensitive unit, and conductive networks, respectively, composed the flexible magnetic field sensor. The measurement results of the flexible magnetic field sensor showed its high sensitivity (2.1 T−1) and good stability. The mechanism of the sensor was explored at last. Keywords Magnetic nanoparticle . Flexible sensor . Magnetic field detection . Magnetic field sensor
1 Introduction Flexible electronic devices have recently attracted much attention due to their easy-to-interact long-term monitoring capabilities [1–4]. Owing to their advantages such as light weight, portability, excellent electrical performance, and high integration, they have become one of the most promising electronic sensors [5–8]. With the development of science, flexible sensing technology has been widely used in various fields of production and life such as medical, aerospace, and engineering facilities [2, 9, 10]. Multifunction is the development trend of * Shengbo Sang [email protected] 1
MicroNano System Research Center, Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, China
2
Department of Nuclear Medicine, First Hospital of Shanxi Medical University, No. 85, Jiefang Road, Taiyuan 030001, Shanxi, China
3
Molecular Imaging Precision Medical Collaborative Innovation Center, Shanxi Medical University, Taiyuan 030001, People’s Republic of China
sensors. Applications of flexible stress sensors include strain sensors [11–13], pressure sensors [14–16], electronic skins [17, 18], temperature sensors [19–21], magnetic field sensors [22, 23], and biosensors [24, 25]. With the advancement of modern science and technolog
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