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Sensors 2018, 18(1), 240; https://doi.org/10.3390/s18010240

Fabrication of a Textile-Based Wearable Blood Leakage Sensor Using Screen-Offset Printing

Flexible Electronics Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
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Received: 28 December 2017 / Revised: 12 January 2018 / Accepted: 12 January 2018 / Published: 15 January 2018
(This article belongs to the Special Issue Screen-Printed Electrodes)
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Abstract

We fabricate a wearable blood leakage sensor on a cotton textile by combining two newly developed techniques. First, we employ a screen-offset printing technique that avoids blurring, short circuiting between adjacent conductive patterns, and electrode fracturing to form an interdigitated electrode structure for the sensor on a textile. Furthermore, we develop a scheme to distinguish blood from other substances by utilizing the specific dielectric dispersion of blood observed in the sub-megahertz frequency range. The sensor can detect blood volumes as low as 15 μL, which is significantly lower than those of commercially available products (which can detect approximately 1 mL of blood) and comparable to a recently reported value of approximately 10 μL. In this study, we merge two technologies to develop a more practical skin-friendly sensor that can be applied for safe, stress-free blood leakage monitoring during hemodialysis. View Full-Text
Keywords: blood leakage; flexible electronics; impedance; printed electronics; screen printing; screen-offset printing; wearable devices blood leakage; flexible electronics; impedance; printed electronics; screen printing; screen-offset printing; wearable devices
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Nomura, K.-I.; Horii, Y.; Kanazawa, S.; Kusaka, Y.; Ushijima, H. Fabrication of a Textile-Based Wearable Blood Leakage Sensor Using Screen-Offset Printing. Sensors 2018, 18, 240.

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