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Image Information Obtained Using a Charge-Coupled Device (CCD) Camera During an Immersion Liquid Evaporation Process for Measuring the Refractive Index of Solid Particles
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. University of Oulu, Oulu, Finland.
University of Oulu, Kajaani, Finland.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
University of Oulu, Kajaani, Finland.
2018 (English)In: Applied Spectroscopy, ISSN 0003-7028, E-ISSN 1943-3530Article in journal (Refereed) Epub ahead of print
Abstract [en]

The refractive index is a fundamental physical property of a medium, which can be used for the identification and purity issues of all media. Here we describe a refractive index measurement technique to determine simultaneously the refractive index of different solid particles by monitoring the transmittance of light from a suspension using a charge-coupled device (CCD) camera. An important feature of the measurement is the liquid evaporation process for the refractive index matching of the solid particle and the immersion liquid; this was realized by using a pair of volatile and non-volatile immersion liquids. In this study, refractive indices of calcium fluoride (CaF2) and barium fluoride (BaF2) were determined using the proposed method.

Place, publisher, year, edition, pages
2018.
Keyword [en]
BaF2, barium fluoride, CaF2, calcium fluoride, CCD camera, charge-coupled device camera, evaporation, image immersion liquid method, liquid mixture, Refractive index
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-33666DOI: 10.1177/0003702818756660OAI: oai:DiVA.org:miun-33666DiVA, id: diva2:1209701
Available from: 2018-05-23 Created: 2018-05-23 Last updated: 2018-05-23Bibliographically approved

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Niskanen, IlpoThungström, Göran

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