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

Research output: Contribution to journalArticlepeer-review

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

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Ministry of Science, ICT and Future Planning (MSIP) (Nos. NRF-2015K1A1A2033332, NRF-2014M3A7B4051596, and NRF-2015R1A5A1037627), and by the SNU-Yonsei Research Cooperation Program through Seoul National University (SNU) in 2016. It was also supported by grants from CAMP funded by the Ministry of Science and Technology (RIAM) and from the Korea Research Foundation. H. Y. Park acknowledges support from the Basic Science Research Program through the NRF funded by the Ministry of Science, ICT and Future Planning (No. 2015R1C1A1A02036674).

Publisher Copyright:
© 2017 Author(s).

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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