Localization of Multiple DNA Sequences on Nanopatterns


Onses M. S., Pathak P., Liu C., Cerrina F., Nealey P. F.

ACS NANO, cilt.5, sa.10, ss.7899-7909, 2011 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 5 Sayı: 10
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1021/nn2021277
  • Dergi Adı: ACS NANO
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.7899-7909
  • Erciyes Üniversitesi Adresli: Hayır

Özet

DNA oligonucleotides of different sequences were patterned at the nanoscale. Areas of positive charge were generated by exposure of Insulating substrates, spin-on hydrogen silsesquioxane or vapor-deposited SiO2 on 51, with ionizing radiation sources used In electron beam and extreme ultraviolet lithography. Au nanoparticles (NPs) with a diameter of 15 nm, carrying covalently bound negatively charged single-stranded DNA Oligonucleotides, were site specifically immobilized directly on the exposed regions and presented oligonucleotides for subsequent hybridization. Repeated exposure and deposition of NPs allowed for patterning multiple DNA sequences. Patterns with dimensions as small as 15 nm were fabricated using electron beam lithography. The use of DNA-functionalized NPs rather than Just DNA facilitates metrology in scanning electron microscopy and Improves the hybridization efficiency of the oligonucleotides on the surface.