In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures
We present a versatile method for synthesizing high-quality molybdenum disulfide (MoS<sub>2</sub>) crystals on graphite foil edges via chemical vapor deposition (CVD). This results in MoS<sub>2</sub>/graphene heterostructures with precise epitaxial layers and no rotational mi...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/2/114 |
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| Summary: | We present a versatile method for synthesizing high-quality molybdenum disulfide (MoS<sub>2</sub>) crystals on graphite foil edges via chemical vapor deposition (CVD). This results in MoS<sub>2</sub>/graphene heterostructures with precise epitaxial layers and no rotational misalignment, eliminating the need for transfer processes and reducing contamination. Utilizing in situ transmission electron microscopy (TEM) equipped with a nano-manipulator and tungsten probe, we mechanically induce the folding, wrinkling, and tearing of freestanding MoS<sub>2</sub> crystals, enabling the real-time observation of structural changes at high temporal and spatial resolutions. By applying a bias voltage through the probe, we measure the electrical properties under mechanical stress, revealing near-ohmic behavior due to compatible work functions. This approach facilitates the real-time study of mechanical and electrical properties of MoS<sub>2</sub> crystals and can be extended to other two-dimensional materials, thereby advancing applications in flexible and bendable electronics. |
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| ISSN: | 2079-4991 |