The effect of steric hindrance on the packing of elongated objects
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 cases can be negligible, its effect on statistical properties of the contact
formation remains substantial even for dilute systems.
...
Publisher
University of JyväskyläISBN
978-951-39-6532-7ISSN Search the Publication Forum
0075-465XContains 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
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