DNA has been well known for over 50 years as the predominant chemical for duplication and storage of genetic information in biology. Now DNA has also been recognized as a useful building material in the field of nanotechnology. DNA provides basic building blocks for constructing functionalized nanostructures with four major features: molecular recognition, self-assembly, programmability and predictable nanoscale structures. DNA self-assembly can lead to nanoarchitectures with complex patterns, which are used to organize a variety of nanomaterials with controlled spacing and patterning
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