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Open AccessArticle

Electrophoretic Separation on an Origami Paper-Based Analytical Device Using a Portable Power Bank

1
Department of Modern Mechanical Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan
2
Department of Micro-Nano Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8603, Japan
*
Author to whom correspondence should be addressed.
Deceased 14 October 2018.
Sensors 2019, 19(7), 1724; https://doi.org/10.3390/s19071724
Received: 11 March 2019 / Revised: 8 April 2019 / Accepted: 9 April 2019 / Published: 10 April 2019
(This article belongs to the Section Chemical Sensors)
The electrophoresis of ampholytes such as amino acids on a paper device is difficult because of the variation of pH distribution in time. On the basis of this observation, we propose a paper-based analytical device (PAD) with origami structure. By folding a filter paper, a low operation voltage of 5 V was achieved, where the power was supplied by a 5 V 1.5 A portable power bank through the USB type A receptacle. As a demonstration, we carried out the electrophoretic separation of pI markers (pI 5.5 and 8.7). The separation was achieved within 4 min before the pH distribution on the paper varied. Though the separation distance was small, it could be increased by expanding the origami structure. This result indicates that our proposed PAD is useful for electrophoretic separation on a paper device. View Full-Text
Keywords: paper-based analytical device; electrophoresis; origami paper-based analytical device; electrophoresis; origami
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MDPI and ACS Style

Matsuda, Y.; Sakai, K.; Yamaguchi, H.; Niimi, T. Electrophoretic Separation on an Origami Paper-Based Analytical Device Using a Portable Power Bank. Sensors 2019, 19, 1724.

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