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. 2017 May 19;17(5):1166. doi: 10.3390/s17051166

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© 2017 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) Sensor architecture showing the primary components of the micro-hair sensor; (B) (left) SEM of 1000 μm long micro-hair structure at 45° tilt (scale bar 200 μm) and (right) surface of the PEDOT: PSS micro-hair (scale bar 10 μm); (C) Cross section of PDMS venturi with gold traces on the disposable sensor substrate; (D) Output from 3-channel sensor filtered and shown over a single cycle (ramp up and down) of sensor operation. Reproduced from [54], with permission from © 2015 IEEE; (E,F) Photograph of the printed flow sensor and impeller. Reproduced from [55], with permission from © 2014 IOP Publishing Ltd.