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N. Kaji, Y. Tezuka, Y. Takamura, M. Ueda, T. Nishi-moto, H. Nakanishi, Y. Horiike, and Y. Baba, (2004) Separation of long DNA molecules by quartz nanopillar chips under a direct current electric field. Anal. Chem., 76, 15-22.

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• TITLE: Fabrication of two-dimensional periodic TiO2 pillar arrays by multi-beam laser interference lithography

  AUTHORS: Hiroyo Segawa, Hiroaki Misawa

  KEYWORDS: Lithography, Capillary Force, Assembly

  JOURNAL NAME: Natural Science, Vol.1 No.3, December 15, 2009

  ABSTRACT: Two-dimensional (2D) periodic TiO2 pillar arrays, applicable to photonic crystals and micro-channels, were fabricated by direct patterning of a TiO2-organic hybrid material by multi-beam laser interference lithography and calcination of hybrid patterns. 2D periodic pillars of a TiO2– organic hybrid material were prepared by irra-diation with the interference pattern of femto-second laser beams and removal of the non- irradiated portions. Two types of periodic pillar arrays, standing pillars and top-gathering pillars (four pillars gathered at the top), were obtained, depending on laser irradiation conditions. After calcination of TiO2–organic hybrid pillars, TiO2 pillar arrays were obtained without collapse.