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Paper-Based Microfluidic Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (15 November 2020) | Viewed by 5711

Special Issue Editor


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Guest Editor
Faculty of Chemistry, University of Warsaw, Warsaw, Poland
Interests: analytical chemistry

Special Issue Information

Dear Colleagues,

Distributed screening diagnostics is of great importance, especially during isolation, which almost the entire world is currently undergoing, as a result of the SARS-COV-19 pandemic situation. It is hoped that paper-based microfluidic systems can achieve fast, effective, and safe diagnostics that can be carried out at home or in physicians’ offices. Such a conclusion can be drawn from analyzing the huge interest of scientists around the world in this type of analytical systems. Paper-based diagnostic systems are so attractive because they eliminate the requirement for specialized measuring instruments. In many laboratories, research related to the methodologies for the fabrication of paper systems, both two and three-dimensional, are carried out and modern techniques of immobilizing reagents and biomolecules are being developed.
In addition, much attention is dedicated to the use of commonly available devices, such as smartphones, to develop a new approach for the quantification of electrochemical or optical analytical signals. Solutions developed now have a unique opportunity to become a practice of everyday life in the near future. This Special Issue will collect the latest research results related to the technological and chemical aspects of the production and operation of paper-based microfluidic sensors.

Dr. Łukasz Tymecki
Guest Editor

Manuscript Submission Information

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Keywords

  • Paper-based microfluidic sensors
  • Paper-based microfluidic systems
  • Distance-based paper analytical systems
  • (bio)immobilization in paper-based systems
  • Novel signal acquisition strategies in paper-based systems
  • Rapid prototyping (3d printing) assisting with paper-based microfluidics
  • Point-of-care testing with paper-based systems

Published Papers (1 paper)

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Research

15 pages, 4399 KiB  
Article
A New Paper-Based Microfluidic Device for Improved Detection of Nitrate in Water
by Amer Charbaji, Hojat Heidari-Bafroui, Constantine Anagnostopoulos and Mohammad Faghri
Sensors 2021, 21(1), 102; https://doi.org/10.3390/s21010102 - 26 Dec 2020
Cited by 28 | Viewed by 5411
Abstract
In this paper, we report a simple and inexpensive paper-based microfluidic device for detecting nitrate in water. This device incorporates two recent developments in paper-based technology suitable for nitrate detection and has an optimized microfluidic design. The first technical advancement employed is an [...] Read more.
In this paper, we report a simple and inexpensive paper-based microfluidic device for detecting nitrate in water. This device incorporates two recent developments in paper-based technology suitable for nitrate detection and has an optimized microfluidic design. The first technical advancement employed is an innovative fibrous composite material made up of cotton fibers and zinc microparticles that can be incorporated in paper-based devices and results in better nitrate reduction. The second is a detection zone with an immobilized reagent that allows the passage of a larger sample volume. Different acids were tested—citric and phosphoric acids gave better results than hydrochloric acid since this acid evaporates completely without leaving any residue behind on paper. Different microfluidic designs that utilize various fluid control technologies were investigated and a design with a folding detection zone was chosen and optimized to improve the uniformity of the signal produced. The optimized design allowed the device to achieve a limit of detection and quantification of 0.53 ppm and 1.18 ppm, respectively, for nitrate in water. This accounted for more than a 40% improvement on what has been previously realized for the detection of nitrate in water using paper-based technology. Full article
(This article belongs to the Special Issue Paper-Based Microfluidic Sensors)
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