Measuring biofoam anisotropy using optical coherence tomography

Jonatan Mac Intyre, Doruntina Raka, Mehmet Aydin, Leevi Viitanen, Juha Koivisto

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

21 Lataukset (Pure)

Abstrakti

Optical coherence tomography enables quick scans of translucent objects in a simple environment. Here, we apply this technique to wood-based biofoam. We measure the geometrical properties of the foam, such as bubble eccentricity and density fluctuations, in addition to characterising the possible orientation of fibres. We find that the wood-based foams are extremely suitable for optical coherence tomography due to their translucent nature and large changes of optical density between air-filled bubbles and solid films. Measurement of bubble eccentricity revealed a reasonably high aspect ratio of 1:2, enabling the orientation of long cellulose fibres if added to the mixture. The results demonstrate an effective method to characterise foamlike metamaterials. Furthermore, focusing on eccentricity enables the adjustment of the foam’s manufacturing method and, in turn, helps to produce anisotropic structures.
AlkuperäiskieliEnglanti
Sivut11663-11672
Sivumäärä10
JulkaisuJournal of Materials Science
Vuosikerta57
Numero25
Varhainen verkossa julkaisun päivämäärä27 toukok. 2022
DOI - pysyväislinkit
TilaJulkaistu - 27 toukok. 2022
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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