Fabrication and characterization of quartz nanopillars for DNA separation by size

Ryo Ogawa, Noritada Kaji, Shingi Hashioka, Yoshinobu Baba, Yasuhiro Horiike

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


We fabricated two different distributions of nanopillars-tilted and square distributions. There are difficulties in fabricating a chip containing these nanopillars, particularly in Ni plating and quartz bonding. We improved the Ni plating by applying stable electric current and the reliability of the quartz bonding. In nanopillars with a square distribution, DNA showed conformational changes, and did not show any reptile motion, but moved in a straight line in contrast with its behavior in nanopillars with a tilted distribution. Nanopillars with a tilted distribution acted effectively as sieves for DNA separation by size.

Original languageEnglish
Pages (from-to)2771-2774
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number4 B
Publication statusPublished - Apr 24 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)


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