Laboratorio MDM, IMM-CNR, via C. Olivetti 2, Agrate Brianza, MB, I-20864, Italy.
Istituto dei Sistemi Complessi (ISC)-CNR, U.O.S. Sapienza, Rome, 00185, Italy.
Adv Mater. 2018 Mar;30(9). doi: 10.1002/adma.201705615. Epub 2018 Jan 9.
MoS and generally speaking, the wide family of transition-metal dichalcogenides represents a solid nanotechnology platform on which to engineer a wealth of new and outperforming applications involving 2D materials. An even richer flexibility can be gained by extrinsically inducing an in-plane shape anisotropy of the nanosheets. Here, the synthesis of anisotropic MoS nanosheets is proposed as a prototypical example in this respect starting from a highly conformal chemical vapor deposition on prepatterend substrates and aiming at the more general purpose of tailoring anisotropy of 2D nanosheets by design. This is envisioned to be a suitable configuration for strain engineering as far as strain can be spatially redistributed in morphologically different regions. With a similar approach, both the optical and electronic properties of the 2D transition-metal dichalcogenides can be tailored over macroscopic sample areas in a self-organized fashion, thus paving the way for new applications in the field of optical metasurfaces, light harvesting, and catalysis.
MoS 以及广义上的过渡金属二卤族化合物家族代表了一个坚实的纳米技术平台，可以在其上设计出大量涉及二维材料的新型且性能更优的应用。通过外部诱导纳米片的面内形状各向异性，可以获得更丰富的灵活性。在这方面，通过在预图案化衬底上进行高度一致的化学气相沉积，从合成各向异性 MoS 纳米片开始提出了一个典型示例，其目的是通过设计来定制二维纳米片的各向异性，这被认为是一种适合应变工程的结构，因为应变可以在形态不同的区域内空间重新分布。通过类似的方法，可以以自组织的方式在宏观样品区域上对二维过渡金属二卤族化合物的光学和电子特性进行定制，从而为光学超表面、光捕获和催化等领域的新应用铺平道路。
