CUED Publications database

Visible diffraction from quasi-crystalline arrays of carbon nanotubes

Butler, TP and Butt, H and Wilkinson, TD and Amaratunga, GAJ (2015) Visible diffraction from quasi-crystalline arrays of carbon nanotubes. Nanoscale, 7. pp. 13452-13457. ISSN 2040-3364

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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.

Item Type: Article
Divisions: Div B > Electronics, Power & Energy Conversion
Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:01
Last Modified: 15 Apr 2021 06:03
DOI: 10.1039/c5nr03245h