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Front Bioeng Biotechnol. 2019 Mar 29;7:69. doi: 10.3389/fbioe.2019.00069. eCollection 2019.

Nanoplasmonics in Paper-Based Analytical Devices.

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1
Biophotonic Nanosensors Laboratory, Centro de Investigaciones en Óptica A. C., León, Mexico.

Abstract

Chemical and biological sensing are crucial tools in science and technology. Plasmonic nanoparticles offer a virtually limitless number of photons for sensing applications, which can be available for visual detection over long periods. Moreover, cellulosic materials, such as paper, represent a versatile building block for implementation of simple, yet valuable, microfluidic analytical devices. This mini review outlines the basic theory of nanoplasmonics and the usability of paper as a nanoplasmonic substrate exploiting its features as a (bio)sensing platform based on different mechanisms depending on localized surface plasmon resonance response. Progress, current trends, challenges and opportunities are also underscored. It is intended for general researchers and technologists who are new to the topic as well as specialist/experts in the field.

KEYWORDS:

biosensors; cellulose; metal nanoparticles; microfluidics; plasmonic color

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