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

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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