Periodic nanowire arrays with alternating compositions and structures fabricated using a simultaneous nanowire formation step

Ofer Burg, Rajashekharayya A. Sanguramath, Elisheva Michman, Noga Eren, Inna Popov, Roy Shenhar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Arrays of alternating metallic nanostructures present hybrid properties, which are useful for applications in photonics and catalysis. Block copolymer films provide versatile templates for fabricating periodic arrays of nanowires. Yet, creating arrays with alternating compositions or structures requires different modifications of domains of the same kind. By controlling the penetration depth of metal precursors into the film we were able to impregnate different layers of copolymer cylinders with different metals. Capitalizing on the hexagonal packing of the cylinders led to simultaneous formation of nanowires with alternating compositions and periodic arrangement on the substrate after plasma etching. Selective deposition of nanoparticles on the film enabled creating alternating bare and decorated nanowires, as well as trimetallic nanowire arrays.

Original languageAmerican English
Pages (from-to)9937-9943
Number of pages7
JournalSoft Matter
Volume17
Issue number43
DOIs
StatePublished - 21 Nov 2021

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

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