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. 2018 Jan 19;8:1221. doi: 10.1038/s41598-018-19713-3

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The amplified spin-dependent shifts of photonic SHE by using the weak measurement method. (a–c) Show amplified displacements in biosensor by considering the refractive index of sensing medium with n₃ = 1.33 and 1.335. The graphene are also chosen as one layer, two layers, and three layers. (d–f) Describe the transverse shifts of different incident angles ranging from 73° to 76°. There exists a maximum deviation point where the relative amplified shifts deviation $Δ A_{w} δ_{+}^{H}$ represent the maximum value. The calculated parameters of biosensor are discussed in the main text.