Chemical Mapping of CuPc on MoS$_{2}$ using Tip-Enhanced Raman Scattering

ORAL

Abstract

Enhanced Raman spectroscopies have been widely used for chemical analysis. In surface enhanced Raman scattering (SERS) and tip enhanced Raman scattering (TERS) noble metals such as gold and silver are usually the best substrates with largest Raman enhancement due to strong electromagnetic mechanisms. On the other hand, semiconductor substrates give Raman enhancement based on the chemical mechanism. Here both SERS and TERS are applied to copper phthalocyanine (CuPc) molecules on bulk MoS$_{2}$ substrate. We observe shift of the hot spots as a response of the sample to the TERS tip. The combination of SERS and TERS on MoS$_{2}$ may be applied in chemical analysis of 2D materials and bio-sensing.

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Authors

  • Zhe He

    • Texas A&M University

  • Dmitri Voronine

    • Texas A&M University, Baylor University

  • Alexander Sinyukov

    • Texas A&M University

  • Zachary Liege

    • Baylor University

  • Blake Birmingham

    • Baylor University

  • Khoby Moore

    • Baylor University

  • Ken Park

    • Baylor University

  • Zhenrong Zhang

    • Baylor University

  • Alexei Sokolov

    • Texas A&M University, Baylor University

  • Aleksey Akimov

    • Texas A&M University

  • Marlan Scully

    • Texas A&M University, Baylor University, Princeton University