Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition
3D transition metal nitrides are well recognized for their good electrical conductivity, superior mechanical properties, and high chemical stability. Recently, 2D transition metal nitrides have been successfully prepared in the form of nanosheets and show potential application in energy storage. How...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/142547 |
| _version_ | 1826120236095504384 |
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| author | Wang, Hong Sandoz-Rosado, Emil J. Tsang, Siu Hon Lin, Jinjun Zhu, Minmin Mallick, Govind Liu, Zheng Teo, Edwin Hang Tong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Wang, Hong Sandoz-Rosado, Emil J. Tsang, Siu Hon Lin, Jinjun Zhu, Minmin Mallick, Govind Liu, Zheng Teo, Edwin Hang Tong |
| author_sort | Wang, Hong |
| collection | NTU |
| description | 3D transition metal nitrides are well recognized for their good electrical conductivity, superior mechanical properties, and high chemical stability. Recently, 2D transition metal nitrides have been successfully prepared in the form of nanosheets and show potential application in energy storage. However, the synthesis of highly crystalline and well-shaped 2D nitrides layers is still in demand for the investigation of their intrinsic physical properties. The present paper reports the growth of ultrathin tungsten nitride crystals on SiO2/Si substrates by a salt-assisted chemical vapor deposition method. High-resolution transmission microscopy confirms the as-grown samples are highly crystalline WN. The stiffness of ultrathin WN is investigated by atomic force microscopy–based nanoindentation with the film suspended on circular holes. The 3D Young's modulus of few-layer (4.5 nm thick or more) WN is determined to be 3.9 × 102 ± 1.6 × 102 GPa, which is comparable with the best experimental reported values in the 2D family except graphene and hexagonal boron nitride. The synthesis approach presented in this paper offers the possibilities of producing and utilizing other highly crystalline 2D transition-metal nitride crystals. |
| first_indexed | 2024-10-01T05:12:54Z |
| format | Journal Article |
| id | ntu-10356/142547 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:12:54Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1425472020-06-24T04:08:03Z Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition Wang, Hong Sandoz-Rosado, Emil J. Tsang, Siu Hon Lin, Jinjun Zhu, Minmin Mallick, Govind Liu, Zheng Teo, Edwin Hang Tong School of Electrical and Electronic Engineering School of Materials Science and Engineering Temasek Laboratories Engineering::Materials 2D Material Atomic Force Microscopy 3D transition metal nitrides are well recognized for their good electrical conductivity, superior mechanical properties, and high chemical stability. Recently, 2D transition metal nitrides have been successfully prepared in the form of nanosheets and show potential application in energy storage. However, the synthesis of highly crystalline and well-shaped 2D nitrides layers is still in demand for the investigation of their intrinsic physical properties. The present paper reports the growth of ultrathin tungsten nitride crystals on SiO2/Si substrates by a salt-assisted chemical vapor deposition method. High-resolution transmission microscopy confirms the as-grown samples are highly crystalline WN. The stiffness of ultrathin WN is investigated by atomic force microscopy–based nanoindentation with the film suspended on circular holes. The 3D Young's modulus of few-layer (4.5 nm thick or more) WN is determined to be 3.9 × 102 ± 1.6 × 102 GPa, which is comparable with the best experimental reported values in the 2D family except graphene and hexagonal boron nitride. The synthesis approach presented in this paper offers the possibilities of producing and utilizing other highly crystalline 2D transition-metal nitride crystals. Accepted version 2020-06-24T04:05:21Z 2020-06-24T04:05:21Z 2019 Journal Article Wang, H., Sandoz‐Rosado, E. J., Tsang, S. H., Lin, J., Zhu, M., Mallick, G., . . . Teo, E. H. T. (2019). Elastic properties of 2D Ultrathin tungsten nitride crystals grown by chemical vapor deposition. Advanced Functional Materials, 29(31), 1902663-. doi:10.1002/adfm.201902663 1616-301X https://hdl.handle.net/10356/142547 10.1002/adfm.201902663 2-s2.0-85067398242 31 29 en Advanced Functional Materials This is the accepted version of the following article: Wang, H., Sandoz‐Rosado, E. J., Tsang, S. H., Lin, J., Zhu, M., Mallick, G., . . . Teo, E. H. T. (2019). Elastic properties of 2D Ultrathin tungsten nitride crystals grown by chemical vapor deposition. Advanced Functional Materials, 29(31), 1902663-, which has been published in final form at http://dx.doi.org/10.1002/adfm.201902663. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]. application/pdf |
| spellingShingle | Engineering::Materials 2D Material Atomic Force Microscopy Wang, Hong Sandoz-Rosado, Emil J. Tsang, Siu Hon Lin, Jinjun Zhu, Minmin Mallick, Govind Liu, Zheng Teo, Edwin Hang Tong Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title | Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title_full | Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title_fullStr | Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title_full_unstemmed | Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title_short | Elastic properties of 2D ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| title_sort | elastic properties of 2d ultrathin tungsten nitride crystals grown by chemical vapor deposition |
| topic | Engineering::Materials 2D Material Atomic Force Microscopy |
| url | https://hdl.handle.net/10356/142547 |
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