DNA origami nanopillars as standards for three-dimensional superresolution microscopy

Nano Lett. 2013 Feb 13;13(2):781-5. doi: 10.1021/nl304492y. Epub 2013 Feb 5.

Abstract

Nanopillars are promising nanostructures composed of various materials that bring new functionalities for applications ranging from photovoltaics to analytics. We developed DNA nanopillars with a height of 220 nm and a diameter of ~14 nm using the DNA origami technique. Modifying the base of the nanopillars with biotins allowed selective, upright, and rigid immobilization on solid substrates. With the help of site-selective dye labels, we visualized the structure and determined the orientation of the nanopillars by three-dimensional fluorescence superresolution microscopy. Because of their rigidity and nanometer-precise addressability, DNA origami nanopillars qualify as scaffold for the assembly of plasmonic devices as well as for three-dimensional superresolution standards.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • DNA / chemistry*
  • Imaging, Three-Dimensional*
  • Microscopy, Fluorescence
  • Nanostructures / chemistry*
  • Particle Size
  • Surface Properties

Substances

  • DNA