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Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

At a Glance

Section titled “At a Glance”
MetadataDetails
Publication Date2019-07-02
JournalMaterials
AuthorsMonika Kosowska, Daria Majchrowicz, Kamatchi Jothiramalingam Sankaran, Mateusz Ficek, Ken Haenen
InstitutionsIMEC, Hasselt University
Citations19

Abstract

Section titled “Abstract”

This paper reports the application of doped nanocrystalline diamond (NCD) films—nitrogen-doped NCD and boron-doped NCD—as reflective surfaces in an interferometric sensor of refractive index dedicated to the measurements of liquids. The sensor is constructed as a Fabry-PĂ©rot interferometer, working in the reflective mode. The diamond films were deposited on silicon substrates by a microwave plasma enhanced chemical vapor deposition system. The measurements of refractive indices of liquids were carried out in the range of 1.3 to 1.6. The results of initial investigations show that doped NCD films can be successfully used in fiber-optic sensors of refractive index providing linear work characteristics. Their application can prolong the lifespan of the measurement head and open the way to measure biomedical samples and aggressive chemicals.

Tech Support

Section titled “Tech Support”

Original Source

Section titled “Original Source”

References

Section titled “References”
  1. 2017 - Biosensing with optical fiber gratings [Crossref]
  2. 2012 - Fiber optic sensor for the measurement of concentration and refractive index of liquids based on intensity modulation [Crossref]
  3. 2014 - A single-element interferometer for measuring refractive index of transparent liquids [Crossref]
  4. 2018 - Water concentration dependence of the refractive index of various ionic liquid-water mixtures [Crossref]
  5. 2019 - Refractive index sensor based on all-dielectric gradient metasurface [Crossref]
  6. 2008 - All-fiber optic sensor for measurement of liquid refractive index [Crossref]
  7. 2016 - Optical fiber sensor system for remote and multi-point refractive index measurement [Crossref]
  8. 2018 - Femtomolar Detection by Nanocoated Fiber Label-Free Biosensors [Crossref]

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