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journal article·2017-04-01Open access

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

APL Materials· Volume 5· Issue 4
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Source abstract

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.
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Research context

Nanomaterials

OpenAlex topics: Photoreceptor and optogenetics research · Neuroscience and Neural Engineering · Molecular Communication and Nanonetworks

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Seoul National University 1 Department of Physics and Astronomy, Institute of Applied Physics (IAP), Research Institute of Advanced Materials (RIAM), , Seoul 08826, South Korea

Yonsei University 2 Department of Biotechnology, College of Life Science and Biotechnology, , Seoul 120-749, South Korea

Ewha Womans University 3 Department of Chemistry and Nanoscience, , Seoul 120-750, South Korea

Seoul National University 4 Department of Physics and Astronomy, , Seoul 08826, South Korea

Funding

Seoul National University · National Research Foundation of Korea

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