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Advanced Materials

Utilizing 3D SERS Active Volumes in Aligned Carbon Nanotube Scaffold Substrates

Authors

  • Seunghyun Lee,

    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Myung Gwan Hahm,

    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Robert Vajtai,

    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
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  • Daniel P. Hashim,

    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
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  • Theerapol Thurakitseree,

    1. Department of Mechanical Engineering, University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan
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  • Alin Cristian Chipara,

    1. Department of Mechanical Engineering, University of Texas-Pan American, Edinburg, Texas, 78539, USA
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  • Pulickel M. Ajayan,

    Corresponding author
    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
    • Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
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  • Jason H. Hafner

    Corresponding author
    1. Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 77005, USA
    2. Department of Chemistry, Rice University, Houston, Texas, 77005, USA, Department of Physics and Astronomy, Rice University, Houston, Texas, 77005, USA
    • Department of Chemistry, Rice University, Houston, Texas, 77005, USA, Department of Physics and Astronomy, Rice University, Houston, Texas, 77005, USA.
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Abstract

A structurally tunable 3D surface enhanced Raman scattering (SERS) substrate based on vertically aligned carbon nanotubes (CNTs) sputter-coated with a gold film is described. This substrate shows highly sensitive SERS signals at very low target concentrations of 4-mercaptophenol (4-MPH), down to 10 fM.

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