Tunable polydimethylsiloxane-based microsphere for magnetic field sensing

X. J. Wang; M. H. Bai; Y. Q. Wen; F. Li; C. Z. Xu; M. Wu; B. Sun

doi:10.1117/12.2606020

1 November 2021 Tunable polydimethylsiloxane-based microsphere for magnetic field sensing

X. J. Wang, M. H. Bai, Y. Q. Wen, F. Li, C. Z. Xu, M. Wu, B. Sun

Author Affiliations +

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120572T (2021) https://doi.org/10.1117/12.2606020
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

We demonstrate a fiber-optic magnetic field sensor based on a micro-optical resonator. The optical resonator is formed by nanocrystals-incorporated PDMS (Ni-PDMS) microsphere. The external magnetic field sets up a body force within the microsphere and a magnetic pressure acting on its surface. The experimental results show that the sensitivity of the 170-μm-diameter microsphere (the ferromagnetic particle mass fraction is 10%) is 20 pm/mT, and gradually tends to be saturated in the magnetic field range of 0 ~ 15 mT.

Citation Download Citation

X. J. Wang, M. H. Bai, Y. Q. Wen, F. Li, C. Z. Xu, M. Wu, and B. Sun "Tunable polydimethylsiloxane-based microsphere for magnetic field sensing", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120572T (1 November 2021); https://doi.org/10.1117/12.2606020

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