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

Daria Stoliarskaia; Kelly Thomson; Leo Lue; Yi-Chieh Chen

doi:10.1117/12.2530187

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

Daria Stoliarskaia, Kelly Thomson, Leo Lue, Yi-Chieh Chen

Chemical And Process Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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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

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	Pietro Ferraro, Simonetta Grilli, Monika Ritsch-Marte, Christoph K. Hitzenberger
Place of Publication	Bellingham, Washington
Number of pages	7
Volume	11060
ISBN (Electronic)	9781510627994
DOIs	https://doi.org/10.1117/12.2530187
Publication status	Published - 25 Jul 2019

Keywords

diffuse reflectance
diffuse approximation
DDSCAT
aspect ratio

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1 Participation in conference

SPIE Optical Metrology
Daria Stoliarskaia (Speaker), Kelly Thomson (Participant), Leo Lue (Participant) & Yi-Chieh Chen (Participant)
24 Jun 2019 → 27 Jun 2019
Activity: Participating in or organising an event types › Participation in conference

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.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 11060). [1106019]. 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. Proceedings of SPIE - The International Society for Optical Engineering. 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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note = "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.",

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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), Proceedings of SPIE - The International Society for Optical Engineering. 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.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Pietro Ferraro; Simonetta Grilli; Monika Ritsch-Marte; Christoph K. Hitzenberger. Vol. 11060 Bellingham, Washington, 2019. 1106019.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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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.

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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, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 11060. Bellingham, Washington. 2019. 1106019 https://doi.org/10.1117/12.2530187

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

Abstract

Keywords

Access to Document

SPIE Optical Metrology

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