Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces

Qingbin Fan; Peicheng Lin; Le Tan; Chunyu Huang; Feng Yan; Yanqing Lu; Ting Xu

doi:10.1038/s41377-025-01793-2

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Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces

Original Articles

- Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces
- Light: Science & Applications Vol. 14, Issue 4, Pages: 1094-1104(2025)
- Affiliations：
  
  1.National Laboratory of Solid-State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
  2.School of Electronic Sciences and Engineering, Nanjing University, Nanjing 210093, China
  3.College of Engineering and Applied Sciences and Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Nanjing University, Nanjing 210093, China
  4.School of Materials Engineering, Jiangsu University of Technology, 213001 Changzhou, China
- Author bio：
  
  Feng Yan (fyan@nju.edu.cn)
  Yanqing Lu (yqlu@nju.edu.cn)
  Ting Xu (xuting@nju.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01793-2
  CLC：
- Received：04 September 2024，
  
  Revised：26 January 2025，
  
  Accepted：2025-02-18，
  
  Published Online：05 March 2025，
  
  Published：30 April 2025
- Accepted：
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Fan, Q. B. et al. Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces. Light: Science & Applications, 14, 1094-1104 (2025).
DOI：

Fan, Q. B. et al. Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces. Light: Science & Applications, 14, 1094-1104 (2025). DOI： 10.1038/s41377-025-01793-2.

摘要

Abstract

Transparent flow field visualization techniques play a critical role in engineering and scientific applications. They provide a clear and intuitive means to understand fluid dynamics and its complex phenomena

such as laminar flow

turbulence

and vortices. However

achieving fully two-dimensional quantitative visualization of transparent flow fields under non-invasive conditions remains a significant challenge. Here

we present an approach for achieving flow field visualization by harnessing the synergistic effects of a dielectric metasurface array endowed with photonic spin-decoupled capability. This approach enables the simultaneous acquisition of light-field images containing flow field information in two orthogonal dimensions

which allows for the real-time and quantitative derivation of multiple physical parameters. As a proof-of-concept

we experimentally demonstrate the applicability of the proposed visualization technique to various scenarios

including temperature field mapping

gas leak detection

visualization of various fluid physical phenomena

and 3D morphological reconstruction of transparent phase objects. This technique not only establishes an exceptional platform for advancing research in fluid physics

but also exhibits significant potential for broad applications in industrial design and vision.

关键词

Keywords

references

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