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. 2018 Mar 14;9(3):126. doi: 10.3390/mi9030126

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© 2018 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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Fabrication process of the micro-UFO. (A) Sacrificial layer coating; (B) SUEX lamination on sacrificial layer; (C) UV Exposure; (D) Developing; (E) Assembling polydopamine (PDA) coated permanent magnet.