The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The particle characteristics in a suspension affect the performance and quality of the end product of many chemical industries. The shape of the suspended particles can be influenced by changes in the manufacturing process conditions. Thus, there is a need for a robust method for continuous monitoring of particle characteristics through the process. This study investigates the feasibility of using spatially and angularly resolved diffuse reflectance measurements as a method of determining particle shape. A forward calculation was developed using the discrete dipole approximation to estimate optical properties of the single particle and the diffuse approximation for the reflectance of the particle suspension. The method was used to study aqueous suspensions of randomly-oriented polystyrene ellipsoids. Our objectives were to determine and elucidate the contribution of aspect ratio on optical measurement in vis-NIR spectra. The results suggest that the method is suitable for determining particle shape for suspensions where the particle and the solvent have significantly different optical properties. For these systems, the study suggests that diffusion reflectance measurements can be developed into an in-line method for particle shape determination
LanguageEnglish
Title of host publicationOptical Methods for Inspection, Characterization, and Imaging of Biomaterials IV
EditorsPietro Ferraro, Simonetta Grilli, Monika Ritsch-Marte, Christoph K. Hitzenberger
Place of PublicationBellingham, Washington
Number of pages7
Volume11060
ISBN (Electronic)9781510627994
DOIs
Publication statusPublished - 25 Jul 2019

Fingerprint

aspect ratio
spectroscopy
reflectance
optical properties
ellipsoids
approximation
optical measurement
polystyrene
manufacturing
industries
dipoles
estimates
products

Keywords

  • diffuse reflectance
  • diffuse approximation
  • DDSCAT
  • aspect ratio

Cite this

Stoliarskaia, D., Thomson, K., Lue, L., & Chen, Y-C. (2019). The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions. In P. Ferraro, S. Grilli, M. Ritsch-Marte, & C. K. Hitzenberger (Eds.), Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV (Vol. 11060). [1106019] Bellingham, Washington. https://doi.org/10.1117/12.2530187
Stoliarskaia, Daria ; Thomson, Kelly ; Lue, Leo ; Chen, Yi-Chieh. / The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions. Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV. editor / Pietro Ferraro ; Simonetta Grilli ; Monika Ritsch-Marte ; Christoph K. Hitzenberger. Vol. 11060 Bellingham, Washington, 2019.
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abstract = "The particle characteristics in a suspension affect the performance and quality of the end product of many chemical industries. The shape of the suspended particles can be influenced by changes in the manufacturing process conditions. Thus, there is a need for a robust method for continuous monitoring of particle characteristics through the process. This study investigates the feasibility of using spatially and angularly resolved diffuse reflectance measurements as a method of determining particle shape. A forward calculation was developed using the discrete dipole approximation to estimate optical properties of the single particle and the diffuse approximation for the reflectance of the particle suspension. The method was used to study aqueous suspensions of randomly-oriented polystyrene ellipsoids. Our objectives were to determine and elucidate the contribution of aspect ratio on optical measurement in vis-NIR spectra. The results suggest that the method is suitable for determining particle shape for suspensions where the particle and the solvent have significantly different optical properties. For these systems, the study suggests that diffusion reflectance measurements can be developed into an in-line method for particle shape determination",
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Stoliarskaia, D, Thomson, K, Lue, L & Chen, Y-C 2019, The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions. in P Ferraro, S Grilli, M Ritsch-Marte & CK Hitzenberger (eds), Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV. vol. 11060, 1106019, Bellingham, Washington. https://doi.org/10.1117/12.2530187

The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions. / Stoliarskaia, Daria; Thomson, Kelly; Lue, Leo; Chen, Yi-Chieh.

Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV. ed. / Pietro Ferraro; Simonetta Grilli; Monika Ritsch-Marte; Christoph K. Hitzenberger. Vol. 11060 Bellingham, Washington, 2019. 1106019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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AU - Lue, Leo

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N1 - Copyright 2019 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.

PY - 2019/7/25

Y1 - 2019/7/25

N2 - The particle characteristics in a suspension affect the performance and quality of the end product of many chemical industries. The shape of the suspended particles can be influenced by changes in the manufacturing process conditions. Thus, there is a need for a robust method for continuous monitoring of particle characteristics through the process. This study investigates the feasibility of using spatially and angularly resolved diffuse reflectance measurements as a method of determining particle shape. A forward calculation was developed using the discrete dipole approximation to estimate optical properties of the single particle and the diffuse approximation for the reflectance of the particle suspension. The method was used to study aqueous suspensions of randomly-oriented polystyrene ellipsoids. Our objectives were to determine and elucidate the contribution of aspect ratio on optical measurement in vis-NIR spectra. The results suggest that the method is suitable for determining particle shape for suspensions where the particle and the solvent have significantly different optical properties. For these systems, the study suggests that diffusion reflectance measurements can be developed into an in-line method for particle shape determination

AB - The particle characteristics in a suspension affect the performance and quality of the end product of many chemical industries. The shape of the suspended particles can be influenced by changes in the manufacturing process conditions. Thus, there is a need for a robust method for continuous monitoring of particle characteristics through the process. This study investigates the feasibility of using spatially and angularly resolved diffuse reflectance measurements as a method of determining particle shape. A forward calculation was developed using the discrete dipole approximation to estimate optical properties of the single particle and the diffuse approximation for the reflectance of the particle suspension. The method was used to study aqueous suspensions of randomly-oriented polystyrene ellipsoids. Our objectives were to determine and elucidate the contribution of aspect ratio on optical measurement in vis-NIR spectra. The results suggest that the method is suitable for determining particle shape for suspensions where the particle and the solvent have significantly different optical properties. For these systems, the study suggests that diffusion reflectance measurements can be developed into an in-line method for particle shape determination

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Stoliarskaia D, Thomson K, Lue L, Chen Y-C. The effect of particle aspect ratio on spatially and angularly resolved vis-NIR spectroscopy of suspensions. In Ferraro P, Grilli S, Ritsch-Marte M, Hitzenberger CK, editors, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV. Vol. 11060. Bellingham, Washington. 2019. 1106019 https://doi.org/10.1117/12.2530187