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Bouchard J.-P.,National Optics Institute INO | Noiseux I.,National Optics Institute INO | Veilleux I.,National Optics Institute INO | Mermut O.,National Optics Institute INO
2011 International Workshop on Biophotonics, BIOPHOTONICS 2011 | Year: 2011

Optical tissue phantoms are very important tools for the development of biomedical imaging applications. They play an important role from proof of concept to clinical trials. Optical phantoms are often used as reference materials against which instruments results can be compared. It is therefore important that the optical properties of reference phantoms be measured in a manner that is traceable to the international system of units. SI traceability insures long term consistency of results and will therefore improve the effectiveness of diffuse optics research effort more effective by reducing unwanted variability in the data produced and shared by the community. The ultimate benefit of SI traceability is the reduction of variability in the data produced by novel diagnostic devices, which will in turn increase the statistical power of clinical trials aiming at validating their clinical usefulness. SI traceability, which implies uncertainty analysis, is also relevant to traceability aspects mandated by FDA's Good Manufacturing Practices. © 2011 IEEE.

Sakata K.,Japan Aerospace Exploration Agency | Watanabe Y.,Advanced Engineering Services Co. | Okada J.T.,Japan Aerospace Exploration Agency | Okada J.T.,Japan Science and Technology Agency | And 5 more authors.
Journal of Chemical Thermodynamics | Year: 2015

Total hemispherical emissivity (εT) and constant pressure heat capacity (Cp) of molten Nb, which has a high melting point, was measured using FT-IR combined with an electrostatic levitator. In order to heat the sample to temperatures higher than 2000°C and avoid chemical reactions between the sample and a crucible, a containerless method was needed. By applying these methods, the measured εT of molten Nb at the melting temperature was 0.29, and the Cp was calculated as 41.9 J·mol-1·K-1. Both data showed good agreement with the literature values. In addition, the result was compared with the Drude model and the difference of emissivity between Zr and Nb was discussed. © 2015 Published by Elsevier Ltd.

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