Simple approach to refractive index measurements of polystyrene microspheres (Conference Presentation)

Peter Naglič; Yevhen Zelinskyi; Boštjan Likar; Miran Bürmen

doi:10.1117/12.2546756

9 March 2020 Simple approach to refractive index measurements of polystyrene microspheres (Conference Presentation)

Peter Naglič, Yevhen Zelinskyi, Boštjan Likar, Miran Bürmen

Proceedings Volume 11231, Design and Quality for Biomedical Technologies XIII; 112310J (2020) https://doi.org/10.1117/12.2546756
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

We present a simple approach to determine the refractive index of polystyrene microspheres which are frequently utilized as scatterers in turbid phantoms. The approach is based on Mie theory and transmittance measurements of polystyrene microspheres suspended in media with different refractive indices allowing simultaneous optimization of the diameter and refractive index of the polystyrene microspheres. The refractive index of the medium is changed through the addition of sucrose. Based on our preliminary results, the estimated refractive index of polystyrene microspheres deviates from the literature values by 0.2% and the estimated diameter by 20 nm from the nominal value provided by the manufacturer.

Conference Presentation

Citation Download Citation

Peter Naglič, Yevhen Zelinskyi, Boštjan Likar, and Miran Bürmen "Simple approach to refractive index measurements of polystyrene microspheres (Conference Presentation)", Proc. SPIE 11231, Design and Quality for Biomedical Technologies XIII, 112310J (9 March 2020); https://doi.org/10.1117/12.2546756

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KEYWORDS

Refractive index

Optical properties

Scattering

Calibration

Integrating spheres

Light scattering

Mie scattering

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