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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MDPI AG
2025-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/2/114 |
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| author | Suresh Giri Subash Sharma Rakesh D. Mahyavanshi Golap Kalita Yong Yang Masaki Tanemura |
| author_facet | Suresh Giri Subash Sharma Rakesh D. Mahyavanshi Golap Kalita Yong Yang Masaki Tanemura |
| author_sort | Suresh Giri |
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| description | 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. |
| format | Article |
| id | doaj-art-d636cbf4c422457ab1bedc0031e74568 |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-d636cbf4c422457ab1bedc0031e745682025-01-24T13:44:11ZengMDPI AGNanomaterials2079-49912025-01-0115211410.3390/nano15020114In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene HeterostructuresSuresh Giri0Subash Sharma1Rakesh D. Mahyavanshi2Golap Kalita3Yong Yang4Masaki Tanemura5Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, JapanSchool of Chemistry, University of Bristol, Cantock’s Cl, Bristol BS8 1TS, UKDepartment of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, JapanResearch and Development Laboratory, Nippon Denko Co., Ltd., Anan 774-0023, JapanState Key Laboratory of High-Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaDepartment of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, JapanWe 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.https://www.mdpi.com/2079-4991/15/2/114in situ TEMchemical vapor deposition (CVD)foldingMoS<sub>2</sub>mechanical manipulation |
| spellingShingle | Suresh Giri Subash Sharma Rakesh D. Mahyavanshi Golap Kalita Yong Yang Masaki Tanemura In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures Nanomaterials in situ TEM chemical vapor deposition (CVD) folding MoS<sub>2</sub> mechanical manipulation |
| title | In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures |
| title_full | In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures |
| title_fullStr | In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures |
| title_full_unstemmed | In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures |
| title_short | In Situ TEM Study of Electrical Property and Mechanical Deformation in MoS<sub>2</sub>/Graphene Heterostructures |
| title_sort | in situ tem study of electrical property and mechanical deformation in mos sub 2 sub graphene heterostructures |
| topic | in situ TEM chemical vapor deposition (CVD) folding MoS<sub>2</sub> mechanical manipulation |
| url | https://www.mdpi.com/2079-4991/15/2/114 |
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