Dynamic brain spectrum acquired by a real-time ultraspectral imaging chip with reconfigurable metasurfaces

Xiong, Jian; Cai, Xusheng; Cui, Kaiyu; Huang, Yidong; Yang, Jiawei; Zhu, Hongbo; Li, Wenzheng; Hong, Bo; Rao, Shijie; Zheng, Zekun; Xu, Sheng; He, Yuhan; Liu, Fang; Feng, Xue; Zhang, Wei

doi:10.1364/optica.440013

articleOpticaMar 21, 2022GOLD OA

Dynamic brain spectrum acquired by a real-time ultraspectral imaging chip with reconfigurable metasurfaces

JXJian Xiong XCXusheng Cai KCKaiyu Cui YHYidong Huang JYJiawei Yang

Tsinghua University

Indexed inarxivcrossrefdoaj

Abstract

Spectral imaging paves the way for various fields, particularly in biomedical research. However, spectral imaging, mainly depending on spatial or temporal scanning, cannot achieve high temporal, spatial, and spectral resolution simultaneously. In this study, we demonstrated a silicon real-time ultraspectral imaging chip based on reconfigurable metasurfaces, comprising 155,216 ( 356 × 436 ) image-adaptive microspectrometers with ultra-high center-wavelength accuracy of 0.04 nm and spectral resolution of 0.8 nm. It is employed for imaging brain hemodynamics, and the dynamic spectral absorption properties of deoxyhemoglobin and oxyhemoglobin in a rat barrel cortex were obtained, which enlighten…

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Topics & keywords

Topics

Keywords

Image resolution
Resolution (logic)
Imaging spectroscopy
Computer science
Materials science
Nuclear magnetic resonance
Artificial intelligence
Analytical Chemistry (journal)

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