ZnO nanotube waveguide arrays on graphene films for local optical excitation on biological cells

Hyeonjun Baek, Hankyul Kwak, Minho S. Song, Go Eun Ha, Jongwoo Park, Youngbin Tchoe, Jerome K. Hyun, Hye Yoon Park, Eunji Cheong, Gyu Chul Yi

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4 Citations (Scopus)

Abstract

We report on scalable and position-controlled optical nanoprobe arrays using ZnO nanotube waveguides on graphene films for use in local optical excitation. For the waveguide fabrication, position-controlled and well-ordered ZnO nanotube arrays were grown on chemical vapor deposited graphene films with a submicron patterned mask layer and Au prepared between the interspace of nanotubes. Mammalian cells were cultured on the nanotube waveguide arrays and were locally excited by light illuminated through the nanotubes. Fluorescence and optogenetic signals could be excited through the optical nanoprobes. This method offers the ability to investigate cellular behavior with a high spatial resolution that surpasses the current limitation.

Original languageEnglish
Article number046106
JournalAPL Materials
Volume5
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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    Baek, H., Kwak, H., Song, M. S., Ha, G. E., Park, J., Tchoe, Y., Hyun, J. K., Park, H. Y., Cheong, E., & Yi, G. C. (2017). ZnO nanotube waveguide arrays on graphene films for local optical excitation on biological cells. APL Materials, 5(4), [046106]. https://doi.org/10.1063/1.4981646