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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2310.03143 |
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| _version_ | 1866913468265791488 |
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| author | Li, Shisheng Lin, Yung-Chang Chiew, Yiling Dai, Yunyun Ning, Zixuan Nakajima, Hideaki Lim, Hong En Wu, Jing Naito, Yasuhisa Okazaki, Toshiya Sun, Zhipei Suenaga, Kazu Sakuma, Yoshiki Tsukagoshi, Kazuhito Taniguchi, Takaaki |
| author_facet | Li, Shisheng Lin, Yung-Chang Chiew, Yiling Dai, Yunyun Ning, Zixuan Nakajima, Hideaki Lim, Hong En Wu, Jing Naito, Yasuhisa Okazaki, Toshiya Sun, Zhipei Suenaga, Kazu Sakuma, Yoshiki Tsukagoshi, Kazuhito Taniguchi, Takaaki |
| contents | Layer number-dependent band structures and symmetry are vital for the electrical and optical characteristics of two-dimensional (2D) transition metal dichalcogenides (TMDCs). Harvesting 2D TMDCs with tunable thickness and properties can be achieved through top-down etching and bottom-up growth strategies. In this study, we report a pioneering technique that utilizes the migration of in-situ generated Na-W-S-O droplets to etch out one-dimensional (1D) nanotrenches in few-layer WS$_2$. 1D WS$_2$ nanotrenches were successfully fabricated on the optically inert bilayer WS$_2$, showing pronounced photoluminescence and second harmonic generation signals. Additionally, we demonstrate the modulation of inkjet-printed Na$_2$WO$_4$-Na$_2$SO$_4$ particles to switch between the etching and growth modes by manipulating the sulfur supply. This versatile approach enables the creation of 1D nanochannels on 2D TMDCs. Our research presents exciting prospects for the top-down and bottom-up fabrication of 1D-2D mixed-dimensional TMDC nanostructures, expanding their use for photonic and optoelectronic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_03143 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | One-Dimensional Crystallographic Etching of Few-Layer WS$_2$ Li, Shisheng Lin, Yung-Chang Chiew, Yiling Dai, Yunyun Ning, Zixuan Nakajima, Hideaki Lim, Hong En Wu, Jing Naito, Yasuhisa Okazaki, Toshiya Sun, Zhipei Suenaga, Kazu Sakuma, Yoshiki Tsukagoshi, Kazuhito Taniguchi, Takaaki Applied Physics Materials Science Layer number-dependent band structures and symmetry are vital for the electrical and optical characteristics of two-dimensional (2D) transition metal dichalcogenides (TMDCs). Harvesting 2D TMDCs with tunable thickness and properties can be achieved through top-down etching and bottom-up growth strategies. In this study, we report a pioneering technique that utilizes the migration of in-situ generated Na-W-S-O droplets to etch out one-dimensional (1D) nanotrenches in few-layer WS$_2$. 1D WS$_2$ nanotrenches were successfully fabricated on the optically inert bilayer WS$_2$, showing pronounced photoluminescence and second harmonic generation signals. Additionally, we demonstrate the modulation of inkjet-printed Na$_2$WO$_4$-Na$_2$SO$_4$ particles to switch between the etching and growth modes by manipulating the sulfur supply. This versatile approach enables the creation of 1D nanochannels on 2D TMDCs. Our research presents exciting prospects for the top-down and bottom-up fabrication of 1D-2D mixed-dimensional TMDC nanostructures, expanding their use for photonic and optoelectronic applications. |
| title | One-Dimensional Crystallographic Etching of Few-Layer WS$_2$ |
| topic | Applied Physics Materials Science |
| url | https://arxiv.org/abs/2310.03143 |