Biopattern transfer using diatom frustules for fabrication of functional micro/nanostructures

Yonggang Jiang, Jianchao Fu, Junfeng Pan, Zhonglie An, Jun Cai, Deyuan Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Diatom frustules exhibit various sophisticated shapes with highly ordered hierarchical porous nanostructures, which are promising for applications in the biomimetic fabrication of nanostructured materials. We propose a universal biopattern transfer process for the fabrication of functional micro/nanostructures using diatom frustules as the biotemplates. Porous silicon microcylinders with a thickness of 20 μm are fabricated by deep reactive ion etching of a silicon substrate, which is covered by a layer of diatom frustules. With a similar process, a fast atom beam technique is used to etch the silicon substrate and silicon nanolattices are obtained. By depositing a thin layer of gold film on the diatom bonded silicon substrate, followed by releasing the diatom frustules by diluted HF, gold nanodisks with a thickness of 30 nm are successfully fabricated. The nanodisk array arranges in diamond or radial patterns, replicating the nanostructure of diatom frustules. In addition, a parylene nanodot array is also demonstrated using this diatom-based biopattern transfer process.

Original languageEnglish
Article number14137
JournalJournal of Micro/ Nanolithography, MEMS, and MOEMS
Volume14
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • biotemplating
  • diatom frustule
  • nanostructure
  • pattern transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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