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Materials 2017, 10(11), 1332;

Solution Growth of Two-Dimensional Bi2Se3 Nanosheets for Two-Color All-Optical Switching

Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
College of Science, Key Laboratory for Microstructural Functional Materials of Jiangxi Province, Jiujiang University, Jiujiang 332005, China
School of Information and Electrical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Author to whom correspondence should be addressed.
Received: 27 October 2017 / Revised: 14 November 2017 / Accepted: 18 November 2017 / Published: 21 November 2017
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Two-dimensional Bi2Se3 nanosheets with hexagonal shape are synthesized by a solution synthetic route. The Bi2Se3 nanosheets are 120 nm in edge width and 7 nm in thickness. The size of the Bi2Se3 nanosheets can be controlled by choosing different kinds of reducing agents including hydroxylamine and ethylenediamine. Subsequently, we demonstrate a configuration of two-color all-optical switching based on plasma channels effect using the as-synthesized Bi2Se3 nanosheets as an optical media. The signal light can be modulated as two states including dot and ring shape by changing the intensity of control light. The modulated signal light exhibits excellent spatial propagation properties. As a type of interesting optical material, ultrathin two-dimensional Bi2Se3 nanosheets might provide an effective option for photoelectric applications. View Full-Text
Keywords: nanoparticles; optical materials and properties; nanocrystalline; optical switching nanoparticles; optical materials and properties; nanocrystalline; optical switching

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Wu, X.; Tan, C.; Wang, Q.; Guo, Y.; Wang, D.; Wang, Y.; Meng, D. Solution Growth of Two-Dimensional Bi2Se3 Nanosheets for Two-Color All-Optical Switching. Materials 2017, 10, 1332.

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