Raman imaging of MoS$_{2}$

ORAL

Abstract

Molybdenum disulfide is an important type of metal dichalcogenide which is of great significance in chemical and electronic engineering. The monolayer MoS2 can be made into transistor or biosensor. Its nano-structure has interesting properties. Here, we report Raman imaging of MoS2 nanoflakes using 785 nm laser excitation and find that the intensity near the edge of the flake is higher than in the center. This peculiar characteristic is analyzed and compared to the results of resonant Raman(RR) imaging using 660nm laser excitation. Second-order peaks emerge in the RR map. We compare the results obtained by non-resonant and resonant Raman techniques.Our results can help improving the understanding of the 2D nanostructures and develop new applications. abstract body.

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Authors

  • Hongyuan Li

    Texas A&M University

  • Dmitri Voronine

    Texas A&M University and Baylor University, Texas A&M University, 1Texas A&M University, 2 Baylor University, Texas A&M University,Baylor University, Texas A&M University, Princeton University

  • Alexander Sinyukov

    Texas A&M university, Texas A&M University,Baylor University, Texas A&M University and Baylor University

  • Zhenrong Zhang

    Texas A&M University and Baylor University

  • Alexei Sokolov

    Texas A&M University and Baylor University, Baylor University, Texas A&M University

  • Marlan O. Scully

    professor, Texas A&M University and Baylor University and Princeton University, Texas A&M University, Texas A&M University,Baylor University,Princeton University, Texas A&M University, Baylor University and Princeton University, Baylor University, Texas A&M University, Princeton University, Texas A&M University, College Station, TX 77843, Baylor University, Waco, TX 76798 and Princeton University, Princeton, NJ 08544