Writing and functionalisation of suspended DNA nanowires on superhydrophobic pillar arrays

Ermanno Miele, Angelo Accardo, Andrea Falqui, Monica Marini, Andrea Giugni, Marco Leoncini, Francesco De De Angelis, Roman Krahne, Enzo M. Di Fabrizio

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Nanowire arrays and networks with precisely controlled patterns are very interesting for innovative device concepts in mesoscopic physics. In particular, DNA templates have proven to be versatile for the fabrication of complex structures that obtained functionality via combinations with other materials, for example by functionalisation with molecules or nanoparticles, or by coating with metals. Here, the controlled motion of the a three-phase contact line (TCL) of DNA-loaded drops on superhydrophobic substrates is used to fabricate suspended nanowire arrays. In particular, the deposition of DNA wires is imaged in situ, and different patterns are obtained on hexagonal pillar arrays by controlling the TCL velocity and direction. Robust conductive wires and networks are achieved by coating the wires with a thin layer of gold, and as proof of concept conductivity measurements are performed on single suspended wires. The plastic material of the superhydrophobic pillars ensures electrical isolation from the substrate. The more general versatility of these suspended nanowire networks as functional templates is outlined by fabricating hybrid organic-metal-semiconductor nanowires by growing ZnO nanocrystals onto the metal-coated nanowires.
Original languageEnglish (US)
Pages (from-to)134-140
Number of pages7
JournalSmall
Volume11
Issue number1
DOIs
StatePublished - Aug 8 2014

ASJC Scopus subject areas

  • Medicine(all)

Fingerprint Dive into the research topics of 'Writing and functionalisation of suspended DNA nanowires on superhydrophobic pillar arrays'. Together they form a unique fingerprint.

Cite this