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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/).
The circular cross-sectional area of microchannels produced by microwire molding technique, after 120 μm copper removal, at different magnifications (80 ×, 200 ×, 500 ×, 800 ×).