https://doi.org/10.1140/epjd/e2003-00114-9
Circles of DNA-linked gold nanoparticle strands
School of Chemistry, Seoul National University, Seoul 151-742, Korea
Corresponding author: a djjang@plaza.snu.ac.kr
Received:
10
September
2002
Published online:
3
July
2003
DNA-connected strings of gold nanoparticles are arranged to form very uniformly annular arrays having various diameters of a few micrometers by adjusting evaporation conditions as well as the concentrations of gold nanoparticles and phosphorothioate-modified oligonucleotides. The circles are formed by the dry hole-opening mechanism rather than by the Marangoni effect. However, their sizes are very diverse and their circumferences are approaching to show single-particle thinness instead of close-packed particle cluster thickness owing to DNA-linked gold nanoparticle strands.
PACS: 81.16.-c – Methods of nanofabrication and processing / 78.67.-n – Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures / 81.07.-b – Nanoscale materials and structures: fabrication and characterization
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
