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Research Article | Open Access

Environmental-friendly quantum dot ripples prepared from the Couette flow of solution exhibiting strong laser polarizer ability

Kexin Chen1, Baowei Zhang1( ), Shizhe Ren3,4, Qingxiu Song2, Yongqiang Zhang1, Yongsheng Hu2, Haiyun Dong3,4, Yong Sheng Zhao3,4, Siyu Lu1 ( )
Pingyuan Laboratory, College of Chemistry, Zhengzhou University, Zhengzhou 450000, China
Country School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract

Herein, we fabricate a well-patterned semiconductor ripple structure via confined Couette flow of a quantum dot solution between two glass slides. This method is broadly applicable to diverse colloidal quantum dots, including environmentally friendly CuInxGa1−xS2, InP, and ZnSe nanocrystals. The resulting ripple structure demonstrates strong linear dichroism and polarization capabilities for lasers across a broad wavelength range (445–635 nm). Our work offers a convenient, solution-processable strategy for fabricating semiconductor-based polarizer films.

Graphical Abstract

This work fabricates well-patterned semiconductor ripple structures via confined Couette flow of quantum dot solutions, applicable to diverse colloidal quantum dots (e.g., eco-friendly CuInxGa1−xS2, InP, and ZnSe). These structures exhibit strong linear dichroism and broad-wavelength (445–635 nm) laser polarization capabilities, offering a solution-processable strategy for semiconductor polarizer films.

Keywords

quantum dotsassemblyCouette flowpolarizer

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Nano Research
Volume 18 Issue 9,
September 2025
Article number: 94907788
DOI: 10.26599/NR.2025.94907788

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Cite this article:
Chen K, Zhang B, Ren S, et al. Environmental-friendly quantum dot ripples prepared from the Couette flow of solution exhibiting strong laser polarizer ability. Nano Research, 2025, 18(9): 94907788. https://doi.org/10.26599/NR.2025.94907788
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Received: 03 June 2025
Revised: 06 July 2025
Accepted: 10 July 2025
Published: 20 August 2025
© The Author(s) 2025. Published by Tsinghua University Press.

This is an open access article under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/).