The effect of steric hindrance on the packing of elongated objects

Ekman, Axel

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Research report / Department of Physics, University of Jyväskylä

Authors

Ekman, Axel

Date

2016

Discipline

Fysiikka

Fibres of various materials can be deposited to form planar mats of fibres. These kinds of structures have gained substantial attention owing to their direct relation to both large industrial fields, such as paper and nonwovens, and biological structures, such as natural networks of fibrin, actin and collagen. In addition, similar structures are important in new emerging fields such as flexible electronics and tissue engineering. The physical properties of these structures are directly related to the connectivity of the network, thus a thorough understanding of the contact formation of the system is of great importance from both a scientific viewpoint as well as for its application in the engineering of such structures. In this Thesis we extend on the work regarding the structure of such random networks by considering, in more detail, the effect of the steric hindrance between the constituents. Most notably, we find that even if the effect on averaged properties in many ca ... showmore

Publisher

University of Jyväskylä

ISBN

978-951-39-6532-7

ISSN Search the Publication Forum

0075-465X

Contains publications

Artikkeli I: Ekman, A., Miettinen, A., Turpeinen, T., Backfolk, K., & Timonen, J. (2012). The number of contacts in random fibre networks. Nordic Pulp & Paper Research Journal, 27(2), 270-276. DOI: 10.3183/NPPRJ-2012-27-02-p270-276
Artikkeli II: Ekman, A., Miettinen, A., Tallinen, T., & Timonen, J. (2014). Contact formation in random networks of elongated objects. Physical Review Letters, 113(26), Article 268001. DOI: 10.1103/PhysRevLett.113.268001
Artikkeli III: Al-Qararah, A. M., Ekman, A., Hjelt, T., Ketoja, J. A., Kiiskinen, H., Koponen, A., & Timonen, J. (2015). A unique microstructure of the fiber networks deposited from foam-fiber suspensions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 482(5 October), 544-553. DOI: 10.1016/j.colsurfa.2015.07.010
Artikkeli IV: Al-Qararah, A. M., Ekman, A., Hjelt, T., Kiiskinen, H., Timonen, J., & Ketoja, J. A. (2016). Porous structure of fibre networks formed by a foaming process : a comparative study of different characterization techniques. Journal of Microscopy, 264(1), 88-101. DOI: 10.1111/jmi.12420
Artikkeli V: Ekman, A., Tallinen, T. & Timonen, J. (2015). Excess of end contacts in networks of randomly-packed finite rods. Submitted.
Artikkeli VI: Koponen, A., Ekman, A., Mattila, K., Al-Qararah, A. M., & Timonen, J. (2017). The Effect of Void Structure on the Permeability of Fibrous Networks. Transport in Porous Media, 117(2), 247-259. DOI: 10.1007/s11242-017-0831-2