Magnetic-based Polydimethylsiloxane Microspheres for Magnetic Field Measurement

Abstract

Magnetic-based polydimethylsiloxane microspheres (MPMs) are fabricated and its applications for measurement of magnetic field are investigated. The MPMs are prepared by first incorporating the uniformly sized Mn3O4 nanocrystals into polydimethylsiloxane (PDMS) matrix, and then using a self-assembling method to obtain a chain of microspheres on the fiber taper. The MPMs are regarded as optical resonators, demonstrating whispering gallery modes (WGM) with a high Q factor in the 1310 nm band. Experimental results show that the resonance wavelengths of the WGM spectra depend on the strength of the magnetic field since the change in the applied filed cause the mechanical deformation of the MPMs, leading to a shift in the resonant wavelength of the resonator. Using as magnetic field sensors, the performances of the MPMs in terms of sensitivities and measurement ranges have been optimized. Thus, the sensitivity of 101.9 pm/mT and the measurement range up to 8 mT are achieved with a MPM (~270 μm in diameter). Besides, the performance of the MPM after two-week storage is analyzed, showing the excellent long-term stability.

Publication DOI: https://doi.org/10.1109/TIM.2022.3181928
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: This work was supported in part by National Natural Science Foundation of China under Grants 91950105 and 62175116, in part by Outstanding Chinese and Foreign Youth Exchange Program of China Association for Science and Technology (CAST), in part by the Jiangsu Province Science and Technology, the Association Youth Science and Technology Talent Promotion, in part by the 1311 Talents Program of Nanjing University of Posts and Telecommunications (Dingxin), in part by National Postdoctoral Program for Innovative Talents (BX201600077), in part by the Science Foundation of Nanjing University of Posts and Telecommunications (NY219046), and in part by China Postdoctoral Science Foundation (2017M611877), and in part by Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme under Grant 891685
Uncontrolled Keywords: Magnetic field measurement,Magnetic fields,Magnetic nanoparticles,Magnetic sensor,Manganese,Nanocrystals,Optical fiber sensor,Optical fiber sensors,Optical resonators,Polymer,Sensitivity,whispering gallery modes,Instrumentation,Electrical and Electronic Engineering
Publication ISSN: 0018-9456
Last Modified: 18 Jul 2024 07:11
Date Deposited: 16 Jun 2022 12:40
Full Text Link:
Related URLs: https://ieeexpl ... cument/9792402/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2022
Published Online Date: 2022-06-09
Accepted Date: 2022-06-01
Authors: Sun, Bing
Wang, Xinjiang
Ma, Xiaobo
Sun, Zhongyuan
Wang, Zhiqiang
Zhang, Zuxing
Zhou, Kaiming (ORCID Profile 0000-0002-6011-1912)

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