Drying induced self-formation of semi-ordered nano-porous silicon micro-hairs

Valery A. Skryshevsky, Ganna Vorobey, Cecile Jamois, Jacobo Munguia, Vladimir Lysenko

Research output: Contribution to journalArticle

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Abstract

Spontaneous drying induced self-transformation of highly-porous Si layers into oriented micro-tubular hairs is reported. Main mechanisms involved in such a self-formation of the porous silicon hairs are analyzed: the large capillary stresses at the liquid evaporation from the pores during the drying process, existence of lateral in-plane stresses at the interface "PS layer - bulk Si substrate", engineering of in-depth mechanical stress gradient and preferential cracking of the porous layer along the [110] and [1$ \bar 1 $0] directions. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageAmerican English
Pages (from-to)1805-1807
Number of pages3
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
DOIs
StatePublished - 1 Jun 2011
Externally publishedYes

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