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. 2019 Jul 13;12(14):2259. doi: 10.3390/ma12142259

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) A sensor design of the Love wave surface acoustic wave sensor based on ST-cut quartz substrate and a 4.5 μm SiO₂ guiding layer; and (b) equivalent magnetic noise floor of the output signal shows the frequency dependent LOD. An equivalent magnetic noise of 250 pT/Hz^1/2 at 10 Hz is achieved. This figure is reproduced from [115].