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. 2019 Jan 17;12(2):289. doi: 10.3390/ma12020289

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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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An atomic model of equilibrium adsorption systems. (a) Top Cu atom/intrinsic graphene; (b) bridge Cu atom/intrinsic graphene; (c) top Cu atom/vacancy-defected graphene; (d) bridge Cu atom/vacancy-defected graphene.