Gold nanoparticle wires made using RNA-based self-assembly
Simplified schematic of the self-assembly technique. (a) Two complementary RNA molecules (A and B) bind to each other via loop-receptor interactions [(i) and (ii)] in the presence of ions. (b) In a third interaction (iii) the RNAs are tethered to gold nanoparticles using SH-functionalized single stranded DNA (SS-DNA) so that in the presence of the particles self-assemble.
Scanning electron micrographs showing gold nanoparticles trapped between two electrodes using the RNA process. (a) Broad tipped electrodes showing that multiple chains are formed. (b) Tapered tips showing that multiparticle conglomerations can be made. (c) A typical result showing only a few particles in the gap. (d) A well defined chain of five particles.
characteristics of the wire for temperatures in the range of .
characteristic of the wire at showing detailed features.
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