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Meta-Lens Particle Image Velocimetry
被引:31
|作者:
Liu, Xiaoyuan
[1
]
Zhao, Zhou
[2
]
Xu, Shengming
[2
]
Zhang, Jingcheng
[1
]
Zhou, Yin
[1
]
He, Yulun
[2
]
Yamaguchi, Takeshi
[3
]
Ouyang, Hua
[2
]
Tanaka, Takuo
[3
,4
,5
]
Chen, Mu Ku
[1
,6
,7
]
Shi, Shengxian
[2
]
Qi, Fei
[2
]
Tsai, Din Ping
[1
,6
,7
]
机构:
[1] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mech Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[3] RIKEN, Ctr Adv Photon, Innovat Photon Manipulat Res Team, Saitama 3510198, Japan
[4] RIKEN Cluster Pioneering Res, Metamat Lab, Saitama 3510198, Japan
[5] Tokushima Univ, Inst Postled Photon, Tokushima 7708506, Japan
[6] City Univ Hong Kong, State Key Lab Terahertz & Millimeter Waves, Kowloon, Hong Kong 999077, Peoples R China
[7] City Univ Hong Kong, Ctr Biosyst Neurosci & Nanotechnol, Kowloon, Hong Kong 999077, Peoples R China
基金:
中国国家自然科学基金;
中国博士后科学基金;
关键词:
binocular stereo vision;
depth perception;
meta-lens;
particle image velocimetry (PIV);
METASURFACE;
CALIBRATION;
D O I:
10.1002/adma.202310134
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Fluid flow behavior is visualized through particle image velocimetry (PIV) for understanding and studying experimental fluid dynamics. However, traditional PIV methods require multiple cameras and conventional lens systems for image acquisition to resolve multi-dimensional velocity fields. In turn, it introduces complexity to the entire system. Meta-lenses are advanced flat optical devices composed of artificial nanoantenna arrays. It can manipulate the wavefront of light with the advantages of ultrathin, compact, and no spherical aberration. Meta-lenses offer novel functionalities and promise to replace traditional optical imaging systems. Here, a binocular meta-lens PIV technique is proposed, where a pair of GaN meta-lenses are fabricated on one substrate and integrated with a imaging sensor to form a compact binocular PIV system. The meta-lens weigh only 116 mg, much lighter than commercial lenses. The 3D velocity field can be obtained by the binocular disparity and particle image displacement information of fluid flow. The measurement error of vortex-ring diameter is approximate to 1.25% experimentally validates via a Reynolds-number (Re) 2000 vortex-ring. This work demonstrates a new development trend for the PIV technique for rejuvenating traditional flow diagnostic tools toward a more compact, easy-to-deploy technique. It enables further miniaturization and low-power systems for portable, field-use, and space-constrained PIV applications. A compact binocular meta-lens PIV system is demonstrated. The 3D velocity field can be obtained by the binocular disparity and particle image displacement information of fluid flow. It's a new development trend for the PIV technique for rejuvenating traditional flow diagnostic tools toward a more compact, easy-to-deploy technique. It enables further miniaturization and low-power systems for portable, field-use, and space-constrained PIV applications.image
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