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. 2021 May 31;14(11):2973. doi: 10.3390/ma14112973

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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Graphene printing and functionalization for bioelectronics sensors. (a) Atomic force microscopy (AFM) images of screen-printed graphene (reprinted with permission from J. Colloid Interface Sci. (2021), 582(A), 15. Copyright 2021, Elsevier). (b,c) SEM images of an inkjet-printed graphene deposition (b) before and (c) after curing, with a minor coffee ring effect. (reprinted with permission from Adv. Mater. (2013), 25(29), 3985–3992. Copyright 2013, Wiley). (d) Examples of covalently bonded bioreceptors on a functionalized GO deposition. (reprinted with permission from J. Nanobiotechnol. (2018), 16,75. Copyright 2018, Springer Nature). (e) Graphical depiction of a FET biosensor with organo-functionalization. (reprinted with permission from Biosens. Bioelectron. (2017). 87, 7–17. Copyright 2017, Elsevier).