Martanov Sergey G, Zhurbina Natalia K, Pugachev Mikhail V, Duleba Aliaksandr I, Akmaev Mark A, Belykh Vasilii V, Kuntsevich Aleksandr Y
National Research University Higher School of Economics, Moscow 101000, Russia.
Moscow Institute of Physics and Technology, Dolgoprudny 141701, Russia.
Nanomaterials (Basel). 2020 Nov 21;10(11):2305. doi: 10.3390/nano10112305.
Van-der Waals heterostructures assembled from one or few atomic layer thickness crystals are becoming increasingly more popular in condensed matter physics. These structures are assembled using transfer machines, those are based on mask aligners, probe stations or are home-made. For many laboratories it is vital to build a simple, convenient and universal transfer machine. In this paper we discuss the guiding principles for the design of such a machine, review the existing machines and demonstrate our own construction, that is powerful and fast-in-operation. All components of this machine are extremely cheap and can be easily purchased using common online retail services. Moreover, assembling a heterostructure out of exfoliated commercially available hexagonal boron nitride and tungsten diselenide crystals with a pick-up technique and using the microphotolumenescence spectra, we show well-resolved exciton and trion lines, as a results of disorder suppression in WSe2 monolayer. Our results thus show that technology of the two-dimensional materials and heterostructures becomes accessible to anyone.
由一层或几层原子层厚度的晶体组装而成的范德华异质结构在凝聚态物理中越来越受欢迎。这些结构是使用转移机器组装的，这些转移机器基于掩膜对准器、探针台或自制。对于许多实验室来说，构建一台简单、方便且通用的转移机器至关重要。在本文中，我们讨论了设计此类机器的指导原则，回顾了现有的机器，并展示了我们自己的结构，它功能强大且操作快速。这台机器的所有组件都极其便宜，并且可以使用常见的在线零售服务轻松购买。此外，通过拾取技术用剥离的市售六方氮化硼和二硒化钨晶体组装异质结构，并使用微光致发光光谱，我们展示了分辨良好的激子和三重子线，这是WSe2单层中无序抑制的结果。因此，我们的结果表明，二维材料和异质结构技术对任何人来说都触手可及。
