Visible diffraction from quasi-crystalline arrays of carbon nanotubes

Timothy P. Butler, Haider Butt, Timothy D. Wilkinson, Gehan A J Amaratunga

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
23 Downloads (Pure)

Abstract

Large area arrays of vertically-aligned carbon nanotubes (VACNTs) are patterned in a quasi-crystalline Penrose tile arrangement through electron beam lithography definition of Ni catalyst dots and subsequent nanotube growth by plasma-enhanced chemical vapour deposition. When illuminated with a 532 nm laser beam high-quality and remarkable diffraction patterns are seen. The diffraction is well matched to theoretical calculations which assume apertures to be present at the location of the VACNTs for transmitted light. The results show that VACNTs act as diffractive elements in reflection and can be used as spatially phased arrays for producing tailored diffraction patterns.

Original languageEnglish
Pages (from-to)13452-13457
Number of pages6
JournalNanoscale
Volume7
Issue number32
Early online date17 Jun 2015
DOIs
Publication statusPublished - 28 Aug 2015

ASJC Scopus subject areas

  • Materials Science(all)

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