Metallic nanostructures have inspired extensive research over several decades, particularlywithin the field of nanoelectronics and increasingly in plasmonics. Due to the limitations ofconventional lithography methods, the development of bottom-up fabricated metallic nanostructureshas become more and more in demand. The remarkable development of DNA-based nanostructureshas provided many successful methods and realizations for these needs, such as chemical DNAmetallization via seeding or ionization, as well as DNA-guided lithography and casting of metallicnanoparticles by DNA molds. These methods offer high resolution, versatility and throughputand could enable the fabrication of arbitrarily-shaped structures with a 10-nm feature size, thusbringing novel applications into view. In this review, we cover the evolution of DNA-based metallicnanostructures, starting from the metallized double-stranded DNA for electronics and progress tosophisticated plasmonic structures based on DNA origami objects.
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