TY - JOUR
T1 - Chirality-dependent second harmonic generation of MoS2nanoscroll with enhanced efficiency
AU - Huang, Shengxi
AU - Qian, Qingkai
AU - Zu, Rui
AU - Ji, Qingqing
AU - Jung, Gang Seob
AU - Zhang, Kunyan
AU - Zhang, Ye
AU - Buehler, Markus J.
AU - Kong, Jing
AU - Gopalan, Venkatraman
N1 - Funding Information:
R.Z. and V.G. acknowledge support from the NSF Grant DMR-1807768 and NSF-MRSEC Penn State Center for Nanoscale Science, Grant DMR-1420620. Q.J. and J.K. acknowledge the support from the STC Center for Integrated Quantum Materials with NSF Grant DMR-1231319. G.S.J. acknowledges support by the Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory and CADES for computing resources. ORNL is managed by UT-Battelle, LLC, for DOE under contract DE-AC05-00OR22725. G.S.J and M.J.B. acknowledge support by the Office of Naval Research (Grant N00014-16-1-233 and N000141-91-2-375), ARO (Grant W911NF1920098), and DOD-MURI (Grant FA9550-15-1-0514). S.H. acknowledges the support from the National Science Foundation under grant number ECCS-1943895. COMSOL simulations for this research were performed on the Pennsylvania State University’s Institute for Computational and Data Sciences Advanced CyberInfrastructure (ICDS-ACI).
PY - 2020/10/27
Y1 - 2020/10/27
N2 - Materials with high second harmonic generation (SHG) efficiency and reduced dimensions are favorable for integrated photonics and nonlinear optical applications. Here, we fabricate MoS2 nanoscrolls with different chiralities and study their SHG performances. As a 1D material, MoS2 nanoscroll shows reduced symmetry and strong chirality dependency in the polarization-resolved SHG characterizations. This SHG performance can be well explained by the superposition theory of second harmonic field of the nanoscroll walls. MoS2 nanoscrolls with certain chiralities and diameters in our experiment can have SHG intensity up to 95 times stronger than that of monolayer MoS2, and the full potential can still be further exploited. The same chirality-dependent SHG can be expected for nanoscrolls or nanotubes composed of other noncentrosymmetric 2D materials, such as WS2, WSe2, and hBN. The characterization and analysis results presented here can also be exploited as a nondestructive technique to determine the chiralities of these nanoscrolls and nanotubes.
AB - Materials with high second harmonic generation (SHG) efficiency and reduced dimensions are favorable for integrated photonics and nonlinear optical applications. Here, we fabricate MoS2 nanoscrolls with different chiralities and study their SHG performances. As a 1D material, MoS2 nanoscroll shows reduced symmetry and strong chirality dependency in the polarization-resolved SHG characterizations. This SHG performance can be well explained by the superposition theory of second harmonic field of the nanoscroll walls. MoS2 nanoscrolls with certain chiralities and diameters in our experiment can have SHG intensity up to 95 times stronger than that of monolayer MoS2, and the full potential can still be further exploited. The same chirality-dependent SHG can be expected for nanoscrolls or nanotubes composed of other noncentrosymmetric 2D materials, such as WS2, WSe2, and hBN. The characterization and analysis results presented here can also be exploited as a nondestructive technique to determine the chiralities of these nanoscrolls and nanotubes.
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U2 - 10.1021/acsnano.0c05189
DO - 10.1021/acsnano.0c05189
M3 - Article
C2 - 32926617
AN - SCOPUS:85094982515
VL - 14
SP - 13333
EP - 13342
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 10
ER -