High sensitivity magnetic field sensing via a sandwich-type polydimethylsiloxane resonator
High sensitivity magnetic field sensing via a sandwich-type polydimethylsiloxane resonator
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DOI：
10.1117/1.oe.62.5.057101
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发表时间：
2023-05
影响因子：
1.3
通讯作者：
Weikang Xu;Jiamin Rong;Enbo Xing;Jianglong Li;Tao Jia;Jun Yue;Deyong Wang;Jun Tang;J. Liu
中科院分区：
文献类型：
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作者：
Weikang Xu;Jiamin Rong;Enbo Xing;Jianglong Li;Tao Jia;Jun Yue;Deyong Wang;Jun Tang;J. Liu
抽象的。提出了采用以聚二甲基硅氧烷（PDMS）柔性谐振器为核心的夹层结构的高灵敏度磁传感。方向感测功能由夹层结构的预设磁场提供。柔性材料的小杨氏模量对应于较大的变化，从而产生高度敏感的磁响应。在非屏蔽环境下，实验结果显示红移灵敏度为1.08 nm/mT，蓝移灵敏度为1.12 nm/mT，这归因于PDMS杨氏模量的轻微变化。指向性曲线的凹点深度为34.6dB。在 1.4 kHz 时可实现最小可检测磁场 0.96 nT·Hz − 1/2。
Abstract. High sensitivity magnetic sensing is proposed using a sandwich structure with polydimethylsiloxane (PDMS) flexible resonator as the core. The directional sensing feature is provided by the sandwich structure’s preset magnetic field. The small Young’s modulus of flexible material corresponds to larger variation, resulting in a highly sensitive magnetic response. In the unshielded environment, the experimental results demonstrate redshift sensitivity of 1.08 nm / mT and blueshift sensitivity of 1.12 nm / mT, which are attributed to a slight variation in the PDMS’s Young’s modulus. The directivity curve’s concave point has a depth of 34.6 dB. The minimum detectable magnetic field of 0.96 nT · Hz − 1/2 is achieved at 1.4 kHz.