Li X, Li B, Lei J, Bets KV, Sang X, Okogbue E, Liu Y, Unocic RR, Yakobson BI, Hone J, Harutyunyan AR. Nickel particle-enabled width-controlled growth of bilayer molybdenum disulfide nanoribbons. Sci Adv. 2021;7(50):eabk1892. https://doi.org/10.1126/sciadv.abk1892.

該文報(bào)道了由鎳納米顆粒實(shí)現(xiàn)的雙層MoS2 NRs的合成，鎳納米顆粒的直徑控制著色帶的寬度。利用AES對(duì)二維材料MoS2進(jìn)行了元素Mapping分析，得出了在雙層MoS2帶狀生長(zhǎng)中尖端鎳顆粒發(fā)揮了關(guān)鍵作用。

FIG. 2. Growth mechanism study. (A) AES elemental mapping of Mo, Ni, Na, and S, within the terminal area of a bilayer MoS2 ribbon grown for only 30 s. SEI stands for secondary electron image. (B) AES elemental mapping of Mo, Ni, and S, within the terminal area of a bilayer MoS2 NR. The Mo and S detected from the nanoparticle area are originated from MoS2 multilayers precipitated beneath the Ni particle (see also fig. S7). (C) AES elemental mapping of a single particle deposited from a mixture of MoO2 + Ni + NaBr under moisturized Ar flow.