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1 PublicationDNA mold templated assembly of conductive gold nanowires
Bayrak, T.; Helmi, S.; Ye, J.; Kauert, D.; Kelling, J.; Schönherr, T.; Erbe, A.; Seidel, R.
Abstract
We introduce a new concept for the solution-based fabrication of conductive gold nanowires using DNA templates. To this end we employ DNA nanomolds inside which electroless gold deposition is initiated by site-specifically attached seeds. Using programmable interfaces individual molds self-assemble into micrometer long mold superstructures. During the subsequent internal gold deposition, the mold walls constrain the metal growth, such that highly homogeneous nanowires with 20-30 nm diameter are obtained. Wire contacting using electron beam lithography and electrical conductance characterization at temperatures between 4.2 K and room temperature demonstrate, that metallically conducting wires can be produced, though in part of the wires the conductance is limited by boundaries between gold grains. Using different mold designs, our synthesis scheme will in the future allow the fabrication of complex metal structures with programmable shape.
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
Related publications
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 27071) publication
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Nano Letters 18(2018)3
DOI: 10.1021/acs.nanolett.8b00344
Cited 89 times in Scopus
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- Final Draft PDF 923 kB Secondary publication
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