Stiffer Bonding of Armchair Edge in Single‐Layer Molybdenum Disulfide Nanoribbons
Source abstract
Abstract
Abstract The physical and chemical properties of nanoribbon edges are important for characterizing nanoribbons and applying them in electronic devices, sensors, and catalysts. The mechanical response of molybdenum disulfide nanoribbons, which is an important issue for their application in thin resonators, is expected to be affected by the edge structure, albeit this result is not yet being reported. In this work, the width‐dependent Young's modulus is precisely measured in single‐layer molybdenum disulfide nanoribbons with armchair edges using the developed nanomechanical measurement based on a transmission electron microscope. The Young's modulus remains constant at ≈166 GPa above 3 nm width, but is inversely proportional to the width below 3 nm, suggesting a higher bond stiffness for the armchair edges. Supporting the experimental results, the density functional theory calculations show that buckling causes electron transfer from the Mo atoms at the edges to the S atoms on both sides to increase the Coulomb attraction.
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Research context
OpenAlex topics: 2D Materials and Applications · Nanowire Synthesis and Applications · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics Ministry of Education and School of Physics & Microelectronics Zhengzhou University Zhengzhou 450052 China
School of Materials Science Japan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan
Center of Advanced Analysis & Gene Sequencing Zhengzhou University Zhengzhou 450001 China
Research Center for Advanced Computing Infrastructure Japan Advanced Institute of Science and Technology Nomi Ishikawa 923‐1292 Japan
School of Information Science Japan Advanced Institute of Science and Technology Nomi Ishikawa 923‐1292 Japan
Institute of Quantum Materials and Physics Henan Academy of Sciences Zhengzhou 450046 China
Funding
China Scholarship Council
References (75)
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