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. 2019 Aug 13;19(16):3536. doi: 10.3390/s19163536

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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/).

PMC Copyright notice

SPR resonance wavelength of (a) Au-PCF sensor and CNTs/Au-PCF sensor (b) Ag-PCF sensor and CNTs/Ag-PCF sensor with varied refractive indices of glucose solutions. Reprinted with permission from [83]. Copyright 2018 Elsevier.