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The phase mode atomic force microscopy (AFM) lithography and monolayer lift‐off process are combined to fabricate electronics based on 2D materials (2DMs), which remove the need for pre‐fabricating markers and increase the accuracy of the overlay and alignment. The promising phase mode of AFM lithography eliminates the drawbacks of the conventional force mode such as the over‐cut, under‐cut, debris...
In article number 1803273, Lianqing Liu and co‐workers propose a unique mask‐free and marker‐free lithography technique to fabricate a sub‐micrometer‐sized 2D material thin‐film transistor using the phase mode of atomic force microscopy. This method does not change the chemical, physical, and electrical properties of 2D materials. It offers a flexible, easy, effective, and low‐cost way to fabricate...
Lattice orientation detection techniques are crucial for two-dimensional materials as many unusual properties, such as electronic, optical, catalytic and magnetic properties, are closely related to particular lattice orientations. Herein, we propose a novel, low-cost and convenient detection technique, referred to as a single-line-scan power spectrum analysis (SPSA), which is established based on...
The remarkable properties of two-dimensional materials have generated great enthusiasm among researchers. Very recently, MoS2, the representative of transition metal dichalcogenides, has triggered increasing attention and hold huge potential for many applications. Although the tribological properties of MoS2 has been studied for decades, the atomic-scale motion between tip and MoS2 surface is quite...
An theoretical and experimental study on friction anisotropy and 120 degree periodicity variation in atomic friction of MoS2 is presented in this paper. To clearly clarify these properties, fast Fourier transform(FFT) is utilized by Matlab software to perform the frequency variation of the actual friction signal wave acquired from the lateral friction experiment. Characteristic of the computed frequency...
A friction modeling in zigzag and armchair lattice orientation of MoS2 has been demonstrated in this paper. Combing the assumption on the moving trajectories of the probe in both lattice orientations with two-dimension Tomlinson model, simulation of relationship between friction and orientation was smoothly performed with Matlab software. The lateral friction Microscopy(LFM) based experiment was conducted...
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