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Void Volume Fraction of Granular Scaffolds.

Publication ,  Journal Article
Riley, L; Wei, G; Bao, Y; Cheng, P; Wilson, KL; Liu, Y; Gong, Y; Segura, T
Published in: Small (Weinheim an der Bergstrasse, Germany)
October 2023

Void volume fraction (VVF) is a global measurement frequently used to characterize the void space of granular scaffolds, yet there is no gold standard by which to measure VVF in practice. To study the relationship  between VVF and particles of varying size, form, and composition, a library of 3D simulated scaffolds is used. Results reveal that relative to particle count, VVF is a less predictable metric across replicate scaffolds. Simulated scaffolds are used to explores the relationship between microscope magnification and VVF, and recommendations are offered for optimizing the accuracy of approximating VVF using 2D microscope images. Lastly, VVF of hydrogel granular scaffolds is measured while varying four input parameters: image quality, magnification, analysis software, and intensity threshold. Results show that VVF is highly sensitive to these parameters. Overall, random packing produces variation in VVF among granular scaffolds comprising the same particle populations. Furthermore, while VVF is used to compare the porosity of granular materials within a study, VVF is a less reliable metric across studies that use different input parameters. VVF, a global measurement, cannot describe the dimensions of porosity within granular scaffolds, and the work supports the notion that more descriptors are necessary to sufficiently characterize void space.

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Published In

Small (Weinheim an der Bergstrasse, Germany)

DOI

EISSN

1613-6829

ISSN

1613-6810

Publication Date

October 2023

Volume

19

Issue

40

Start / End Page

e2303466

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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ICMJE
MLA
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Riley, L., Wei, G., Bao, Y., Cheng, P., Wilson, K. L., Liu, Y., … Segura, T. (2023). Void Volume Fraction of Granular Scaffolds. Small (Weinheim an Der Bergstrasse, Germany), 19(40), e2303466. https://doi.org/10.1002/smll.202303466
Riley, Lindsay, Grace Wei, Yijun Bao, Peter Cheng, Katrina L. Wilson, Yining Liu, Yiyang Gong, and Tatiana Segura. “Void Volume Fraction of Granular Scaffolds.Small (Weinheim an Der Bergstrasse, Germany) 19, no. 40 (October 2023): e2303466. https://doi.org/10.1002/smll.202303466.
Riley L, Wei G, Bao Y, Cheng P, Wilson KL, Liu Y, et al. Void Volume Fraction of Granular Scaffolds. Small (Weinheim an der Bergstrasse, Germany). 2023 Oct;19(40):e2303466.
Riley, Lindsay, et al. “Void Volume Fraction of Granular Scaffolds.Small (Weinheim an Der Bergstrasse, Germany), vol. 19, no. 40, Oct. 2023, p. e2303466. Epmc, doi:10.1002/smll.202303466.
Riley L, Wei G, Bao Y, Cheng P, Wilson KL, Liu Y, Gong Y, Segura T. Void Volume Fraction of Granular Scaffolds. Small (Weinheim an der Bergstrasse, Germany). 2023 Oct;19(40):e2303466.
Journal cover image

Published In

Small (Weinheim an der Bergstrasse, Germany)

DOI

EISSN

1613-6829

ISSN

1613-6810

Publication Date

October 2023

Volume

19

Issue

40

Start / End Page

e2303466

Related Subject Headings

  • Nanoscience & Nanotechnology