Biomimetics of Nano-pillar

나노섬모의 자연모사 기술

  • 허신 (한국기계연구원 프린팅공정/자연모사연구실) ;
  • 최홍수 (한국기계연구원 프린팅공정/자연모사연구실) ;
  • 이규항 (한국기계연구원 프린팅공정/자연모사연구실) ;
  • 김완두 (한국기계연구원 프린팅공정/자연모사연구실)
  • Published : 2009.06.30

Abstract

The cochlea of the inner ear has two core components, basilar membrane and hair cells. The basilar membrane disperses incoming sound waves by their frequencies. The hair cells are on the basilar membrane, and they are the sensory receptors generating bioelectric signals. In this paper, a biomimetic technology using ZnO piezoelectric nano-pillar was studied as the part of developing process for artificial cochlea and novel artificial mechanosensory system mimicking human auditory senses. In particular, ZnO piezoelectric nano-pillar was fabricated by both low and high temperature growth methods. ZnO piezoelectric nano-pillars were grown on solid (high temperature growth) and flexible (low temperature growth) substrates. The substrates were patterned prior to ZnO nano-pillar growth so that we can selectively grow ZnO nano-pillar on the substrates. A multi-physical simulation was also conducted to understand the behavior of ZnO nano-pillar. The simulation results show electric potential, von Mises stress, and deformation in the ZnO nano-pillar. Both the experimental and computational works help characterize and optimize ZnO nano-pillar.

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