Porous structure of thick fiber webs

E.K.O. Hellen, M.J. Alava, K.J. Niskanen

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)
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Abstract

The bulk properties and stochastic pore geometry of finite-thickness fiber webs are studied using a realistic model for the sedimentation of flexible fibers [K. J. Niskanen and M. J. Alava, Phys. Rev. Lett. 73, 3475 (1994)]. The resulting web structure is controlled by a dimensionless number F=Tfwf/tf, where Tf is fiber flexibility, wf fiber width, and tf fiber thickness. The fiber length (≫wf,tf) is irrelevant. With increasing coverage c̄, a crossover occurs at c̄=c0≈1+2F from a vacancy-controlled two-dimensional (2D) structure to a pore-controlled 3D structure. The 3D structures are isomorphic in that the pore dimensions are exponentially distributed, with the decay rate dependent only on F.
Original languageEnglish
Pages (from-to)6425-6431
JournalJournal of Applied Physics
Volume81
Issue number9
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

Keywords

  • fiber webs

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