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22 results on '"Lu, Fengya"'

4. Plug-and-play DPC-based quantitative phase microscope

Author

Peng, Tao, primary, Ke, Zeyu, additional, Wu, Hao, additional, He, Jun, additional, Sun, Yue, additional, Zhang, Shuhe, additional, Gao, Qian, additional, Shao, Meng, additional, Zhang, Shengzhao, additional, Zhong, Zhensheng, additional, Lu, FengYa, additional, and Zhou, Jinhua, additional

Published
2024
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5. Laser-induced microbubble as an in vivo valve for optofluidic manipulation in living Mice's microvessels.

Author

Shao, Meng, Li, Changxu, Meng, Chun, Liu, Rui, Yu, Panpan, Lu, Fengya, Zhong, Zhensheng, Wei, Xunbin, Zhou, Jinhua, and Zhong, Min-Cheng

Subjects
CELLULAR mechanics, REPERFUSION, BLOOD flow, VALVES, MICROBUBBLES, BLOOD pressure, MICROBUBBLE diagnosis, BLOOD circulation, PUMPING machinery
Abstract

Optofluidic regulation of blood microflow in vivo represents a significant method for investigating illnesses linked to abnormal changes in blood circulation. Currently, non-invasive strategies are limited to regulation within capillaries of approximately 10 μm in diameter because the adaption to blood pressure levels in the order of several hundred pascals poses a significant challenge in larger microvessels. In this study, using laser-induced microbubble formation within microvessels of the mouse auricle, we regulate blood microflow in small vessels with diameters in the tens of micrometers. By controlling the laser power, we can control the growth and stability of microbubbles in vivo. This controlled approach enables the achievement of prolonged ischemia and subsequent reperfusion of blood flow, and it can also regulate the microbubbles to function as micro-pumps for reverse blood pumping. Furthermore, by controlling the microbubble, narrow microflow channels can be formed between the microbubbles and microvessels for assessing the apparent viscosity of leukocytes, which is 76.9 ± 11.8 Pa·s in the in vivo blood environment. The proposed design of in vivo microbubble valves opens new avenues for constructing real-time blood regulation and exploring cellular mechanics within living organisms. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Near-Infrared Light-Triggered Enantioselective Photopolymerization of Polydiacetylene Films Assisted by Ag and NaYF4 Nanoparticles

Author

Xie, Yifan, primary, Feng, Zeyu, additional, Zhang, Chutian, additional, Tang, Xi, additional, Lu, Fengya, additional, Wang, Xiangnan, additional, Zhang, Hongli, additional, He, Chenlu, additional, Li, Jiahe, additional, Huang, Yu, additional, Zhang, Douguo, additional, Chen, Xin, additional, and Zou, Gang, additional

Published
2021
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18. Optical Trapping with Focused Surface Waves

Author

Xiang, Yifeng, primary, Tang, Xi, additional, Min, Changjun, additional, Rui, Guanghao, additional, Kuai, Yan, additional, Lu, Fengya, additional, Wang, Pei, additional, Ming, Hai, additional, Zhan, Qiwen, additional, Yuan, Xiaocong, additional, Lakowicz, Joseph R., additional, and Zhang, Douguo, additional

Published
2020
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20. Label-free surface-sensitive photonic microscopy with high spatial resolution using azimuthal rotation illumination

Author

Kuai, Yan, primary, Chen, Junxue, additional, Tang, Xi, additional, Xiang, Yifeng, additional, Lu, Fengya, additional, Kuang, Cuifang, additional, Xu, Liang, additional, Shen, Weidong, additional, Cheng, Junjie, additional, Gui, Huaqiao, additional, Zou, Gang, additional, Wang, Pei, additional, Ming, Hai, additional, Liu, Jianguo, additional, Liu, Xu, additional, Lakowicz, Joseph R., additional, and Zhang, Douguo, additional

Published
2019
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22. Sperm quality analyzer: A portable LED array microscope with dark‐field imaging.

Author

Shao, Meng, Li, Changxu, Ma, Xiaohao, Pan, Haoyu, Ke, Zeyu, Liu, Rui, Zhang, Zhiguo, Zhong, Min‐Cheng, Wang, Yi, Zhong, Zhensheng, Lu, Fengya, Wei, Xunbin, and Zhou, Jinhua

Subjects
*IMAGE quality analysis, *SPERM motility, *COST structure, *IMAGING systems, *SPERMATOZOA
Abstract

Sperm quality analysis plays an important role in diagnosing infertility, which is widely implemented by computer‐assisted sperm analysis (CASA) of sperm‐swimming imaging from commercial phase‐contrast microscopy. A well‐equipped microscope comes with a high cost, increasing the burden of assessment, and it also occupies a large volume. For point‐of‐care testing (POCT) of sperm quality, these factors are confronted with the challenges of low‐cost and portable instruments. In this study, an encoded light‐emitting diode (LED) array illumination is employed to achieve a portable microscope with multicontrast imaging for sperm quality analysis. This microscopy has dimensions of 16.5 × 14.0 × 25.0 cm, and its dark‐field (DF) imaging provides high‐contrast sperm image data which is suitable for CASA. According to DF imaging, we developed a software of LabCASA, which can used to assess the motility characteristics of sperm. Compared with TrackMate, the difference in motility parameters from our software was less than 10% in the coefficient of variation (CV). The sperm motility parameters vary with the chamber temperature, which further confirms the reliability of our system with DF imaging. The DF imaging provides strong robustness for tracking sperm's motion under different microscopes. For assessment of the motility parameters, our system can work at a lower cost with a plastic structure. This system with DF imaging is suitable for portable POCT of sperm quality analysis, which is highly cost‐effective in resource‐constrained circumstances. [ABSTRACT FROM AUTHOR]

Published
2024
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