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. 2017 Feb 13;7:42227. doi: 10.1038/srep42227

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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Optical image of 3D serpentine-like antenna on Ecoflex with SMA connector and FR-4 substrate attached (Scale bar: 20 mm); (b) The S₁₁ parameters of the 3D serpentine-like antenna with different applied substrate strain; (c) The S₁₁ parameters of the 3D serpentine-like antenna with different distances to human hand in -Z direction; (d) The S₁₁ parameters of the 3D serpentine-like antenna with different distances to human hand in Y direction; (e) The S₁₁ parameters of the 3D serpentine-like antenna with different distances to human hand in Z direction.