The behaviour of palladium & nickel deposited on mechanically exfoliated samples of 2D transition metal dichalcogenides (MoS2 , WS2 , and WSe2 ) via e-beam evaporation was investigated.Sputtering of metals on the flakes allowed for interaction of the metal and TMD to be investigated on the Å scale in an aberration-corrected transmission electron microscope. By low energy sputtering metals can be deposited on 2D materials without causing damage to the thin flakes. The materials interaction is investigated on the atomic scale via high resolution scanning transmission electron microscopy in high angle annular dark field imaging. Initially, the effect of thermal annealing on the stability of the Pd-2D interaction was investigated, revealing the remarkable difference in particle stability between the 2D materials. Nickel deposition however only resulted in oxidised amorphous particles. The oxide particles' cross-sectional area and circularity were independent of the TMD substrate thickness or type, and deposition rate. This article is protected by copyright. All rights reserved.

中文翻译：

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通过原子分辨率 HAADF 杆研究二维材料上的金属配置

研究了钯和镍通过电子束蒸发沉积在机械剥离的二维过渡金属二硫属化物（MoS2、WS2 和 WSe2）样品上的行为。金属溅射在薄片上允许研究金属和 TMD 的相互作用像差校正透射电子显微镜中的 Å 刻度。通过低能量溅射，金属可以沉积在二维材料上，而不会损坏薄片。通过高分辨率扫描透射电子显微镜在高角度环形暗场成像中在原子尺度上研究材料相互作用。最初，研究了热退火对 Pd-2D 相互作用稳定性的影响，揭示了 2D 材料之间粒子稳定性的显着差异。然而，镍沉积仅导致氧化的无定形颗粒。氧化物颗粒的横截面积和圆形度与 TMD 衬底厚度或类型以及沉积速率无关。本文受版权保护。版权所有。