Abstract
AbstractMolybdenum trioxide (MoO3) in-plane anisotropy has increasingly attracted the attention of the scientific community in the last few years. Many of the observed in-plane anisotropic properties stem from the anisotropic refractive index and elastic constants of the material but a comprehensive analysis of these fundamental properties is still lacking. Here we employ Raman and micro-reflectance measurements, using polarized light, to determine the angular dependence of the refractive index of thin MoO3 flakes and we study the directional dependence of the MoO3 Young’s modulus using the buckling metrology method. We found that MoO3 displays one of the largest in-plane anisotropic mechanical properties reported for 2D materials so far.
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,General Chemistry
Reference84 articles.
1. Wei, Q. & Peng, X. Superior mechanical flexibility of phosphorene and few-layer black phosphorus. Appl. Phys. Lett. 104, 251915 (2014).
2. Zheng, Q. et al. In-plane anisotropic raman response and electrical conductivity with robust electron-photon and electron-phonon interactions of air stable MoO2 nanosheets. J. Phys. Chem. Lett. 10, 2182–2190 (2019).
3. Huang, S. et al. In-plane optical anisotropy of layered gallium telluride. ACS Nano 10, 8964–8972 (2016).
4. Zhou, X. et al. Ultrathin 2D GeSe2 rhombic flakes with high anisotropy realized by Van der Waals epitaxy. Adv. Funct. Mater. 27, 1–9 (2017).
5. Kong, W. et al. Angle resolved vibrational properties of anisotropic transition metal trichalcogenide nanosheets. Nanoscale 9, 4175–4182 (2017).
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