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. 2018 Feb 15;9(2):85. doi: 10.3390/mi9020085

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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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(a) SEM and optical micrographs of the (i) non-laminated microelectrode (~400 μm diameter) with the scale bar in figure measuring 100 μm, (ii) the adhesive/PET laminated and micro-drilled electrode (~211 μm diameter), (iii) adhesive/PET laminated and laser micromachined electrode (70 μm × 50 μm in size) and (iv) the SU-8 cast/cross-linked and laser micromachined electrode (30 μm × 30 μm in size) with the scale bar in figure measuring 100 μm respectively. (b) Optical microphotograph of a 3D printed MEA after packaging and electroless plating of micro-porous platinum.