Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature
Van der Waals semiconductors exemplified by two-dimensional transition-metal dichalcogenides have promised next-generation atomically thin optoelectronics. Boosting their interaction with light is vital for practical applications, especially in the quantum regime where ultrastrong coupling is highly...
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Engineering Electron beam Hyperspectral imaging |
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Engineering Electron beam Hyperspectral imaging Wu, Tingting Wang, Chongwu Hu, Guangwei Wang, Zhixun Zhao, Jiaxin Wang, Zhe Chaykun, Ksenia Liu, Lin Chen, Mengxiao Li, Dong Zhu, Song Xiong, Qihua Shen, Zexiang Gao, Huajian Garcia-Vidal, Francisco J. Wei, Lei Wang, Qi Jie Luo, Yu Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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Van der Waals semiconductors exemplified by two-dimensional transition-metal dichalcogenides have promised next-generation atomically thin optoelectronics. Boosting their interaction with light is vital for practical applications, especially in the quantum regime where ultrastrong coupling is highly demanded but not yet realized. Here we report ultrastrong exciton-plasmon coupling at room temperature in tungsten disulfide (WS2) layers loaded with a random multi-singular plasmonic metasurface deposited on a flexible polymer substrate. Different from seeking perfect metals or high-quality resonators, we create a unique type of metasurface with a dense array of singularities that can support nanometre-sized plasmonic hotspots to which several WS2 excitons coherently interact. The associated normalized coupling strength is 0.12 for monolayer WS2 and can be up to 0.164 for quadrilayers, showcasing the ultrastrong exciton-plasmon coupling that is important for practical optoelectronic devices based on low-dimensional semiconductors. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Wu, Tingting Wang, Chongwu Hu, Guangwei Wang, Zhixun Zhao, Jiaxin Wang, Zhe Chaykun, Ksenia Liu, Lin Chen, Mengxiao Li, Dong Zhu, Song Xiong, Qihua Shen, Zexiang Gao, Huajian Garcia-Vidal, Francisco J. Wei, Lei Wang, Qi Jie Luo, Yu |
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Article |
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Wu, Tingting Wang, Chongwu Hu, Guangwei Wang, Zhixun Zhao, Jiaxin Wang, Zhe Chaykun, Ksenia Liu, Lin Chen, Mengxiao Li, Dong Zhu, Song Xiong, Qihua Shen, Zexiang Gao, Huajian Garcia-Vidal, Francisco J. Wei, Lei Wang, Qi Jie Luo, Yu |
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Wu, Tingting |
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Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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ultrastrong exciton-plasmon couplings in ws2 multilayers synthesized with a random multi-singular metasurface at room temperature |
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2024 |
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https://hdl.handle.net/10356/178824 |
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sg-ntu-dr.10356-1788242024-07-12T15:40:02Z Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature Wu, Tingting Wang, Chongwu Hu, Guangwei Wang, Zhixun Zhao, Jiaxin Wang, Zhe Chaykun, Ksenia Liu, Lin Chen, Mengxiao Li, Dong Zhu, Song Xiong, Qihua Shen, Zexiang Gao, Huajian Garcia-Vidal, Francisco J. Wei, Lei Wang, Qi Jie Luo, Yu School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences School of Mechanical and Aerospace Engineering Engineering Electron beam Hyperspectral imaging Van der Waals semiconductors exemplified by two-dimensional transition-metal dichalcogenides have promised next-generation atomically thin optoelectronics. Boosting their interaction with light is vital for practical applications, especially in the quantum regime where ultrastrong coupling is highly demanded but not yet realized. Here we report ultrastrong exciton-plasmon coupling at room temperature in tungsten disulfide (WS2) layers loaded with a random multi-singular plasmonic metasurface deposited on a flexible polymer substrate. Different from seeking perfect metals or high-quality resonators, we create a unique type of metasurface with a dense array of singularities that can support nanometre-sized plasmonic hotspots to which several WS2 excitons coherently interact. The associated normalized coupling strength is 0.12 for monolayer WS2 and can be up to 0.164 for quadrilayers, showcasing the ultrastrong exciton-plasmon coupling that is important for practical optoelectronic devices based on low-dimensional semiconductors. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Nanyang Technological University National Medical Research Council (NMRC) National Research Foundation (NRF) Published version This work was supported by the Singapore National Research Foundation Competitive Research Program (NRF-CRP22-2019-0006, NRFCRP23-2019-0007, NRF-CRP22-2019-0064 and NRF-CRP22-2019- 0007), the Singapore Ministry of Education Academic Research Fund Tier 2 (MOE2019-T2-2-127, MOE-T2EP50120-0002, MOE-T2EP50120- 0009, MOE-T2EP50220-0020 and MOE-T2EP50122-0005), AcRF Tier 1 (RG57/21, RG156/19 (S)), AcRF Tier 3 (MOE2016-T3-1-006 (S)), A*STAR (1720700038, A1883c0002, A18A7b0058, A20E5c0095, A2083c0062 and A2090b0144), Spanish Ministry for Science and Innovation-Agencia Estatal de Investigación (AEI) through grants CEX2018-000805-M and PID2021-125894NB-I00, the Autonomous Community of Madrid, the Spanish government and the European Union through grant MRR Advanced Materials (MAD2D-CM) National Medical Research Council (NMRC) (021528-00001), A*STAR IAF-ICP Programme I2001E0067, the Schaeffler Hub for Advanced Research at NTU, and the Distinguished Professor Fund of Jiangsu Province (Grant No. 1004-YQR24010). 2024-07-08T05:15:31Z 2024-07-08T05:15:31Z 2024 Journal Article Wu, T., Wang, C., Hu, G., Wang, Z., Zhao, J., Wang, Z., Chaykun, K., Liu, L., Chen, M., Li, D., Zhu, S., Xiong, Q., Shen, Z., Gao, H., Garcia-Vidal, F. J., Wei, L., Wang, Q. J. & Luo, Y. (2024). Ultrastrong exciton-plasmon couplings in WS2 multilayers synthesized with a random multi-singular metasurface at room temperature. Nature Communications, 15(1), 3295-. https://dx.doi.org/10.1038/s41467-024-47610-z 2041-1723 https://hdl.handle.net/10356/178824 10.1038/s41467-024-47610-z 38632230 2-s2.0-85190520447 1 15 3295 en NRF-CRP22-2019-0006 NRFCRP23-2019-0007 NRF-CRP22-2019-0064 NRF-CRP22-2019-0007 MOE2019-T2-2-127 MOE-T2EP50120-0002 MOE-T2EP50120-0009 MOE-T2EP50220-0020 MOE-T2EP50122-0005 RG57/21 RG156/19 (S) MOE2016-T3-1-006 (S) 1720700038 A1883c0002 A18A7b0058 A20E5c0095 A2083c0062 A2090b0144 021528-00001 I2001E0067 Nature Communications © 2024 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |