Superhydrophobic perpendicular nanopin film by the bottom-up process

Eiji Hosono, Shinobu Fujihara, Itaru Honma, Haoshen Zhou

Research output: Contribution to journalArticlepeer-review

390 Citations (Scopus)


We first fabricated the superhydrophobic film with a water contact angle of 178° based on a perpendicular nanopin fractal structure by a bottom-up process. Until now, only materials with an original water contact angle larger than 90°, which is classified as hydrophobicity, could be used to fabricate the superhydrophobic film (>170°) according to the possible fractal structure by a top-down process. Now, in this work, a water contact angle of about 178° can be achieved using a lauric acid-coated film with an original contact angle of 75°, which is classified as hydrophilicity, based on an ideal fractal structure for the superhydrophobic surface which is fabricated by the nanosize pin with 6.5 nm diameter.

Original languageEnglish
Pages (from-to)13458-13459
Number of pages2
JournalJournal of the American Chemical Society
Issue number39
Publication statusPublished - 2005 Oct 5


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