Mr. Chong Liu Profile

Chong Liu

at Nanchang Univ

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Author

Publications (3)

Proceedings Article | 22 March 2021 Poster + Paper

Bessel ultrasonic sensor for large volumetric optical-resolution photoacoustic microscopy for based on conical acoustic lens

Xianlin Song, Jianshuang Wei, Lingfang Song, Jinhong Zhang, Aojie Zhao, Qiming He, Bo Li, Chong Liu, Jiahui Liu

Proceedings Volume 11590, 1159013 (2021) https://doi.org/10.1117/12.2590881

KEYWORDS: Ultrasonics, Transducers, Acoustics, Sensors, Photoacoustic microscopy, Spherical lenses, Lens design, Ultrasonography, Silica, Prisms

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Proceedings Article | 5 March 2021 Presentation + Paper

Analysis on the photonic transmission and heat transfer of pulsed laser and breast cancer based on COMSOL multiphysics

Xianlin Song, Yuli Li, Ao Teng, Bo Li, Qiming He, Jinhong Zhang, Aojie Zhao, Zihao Li, Hao Chen, Jianshuang Wei, Lingfang Song, Cong Liu

Proceedings Volume 11622, 116220N (2021) https://doi.org/10.1117/12.2589051

KEYWORDS: Breast, Breast cancer, Tumors, Tumor growth modeling, Photoacoustic imaging, Mammary gland, Laser tissue interaction, Tissues, Oncology, Cancer

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Proceedings Article | 5 March 2021 Presentation + Paper

Vortex-beam photoacoustic microscopy for enhancing the depth of field

Cong Liu, Jiahao Zeng, Xianlin Song, Ao Teng, Jianshuang Wei, Lingfang Song, Xueyan Liu

Proceedings Volume 11642, 116423R (2021) https://doi.org/10.1117/12.2589253

KEYWORDS: Photoacoustic spectroscopy, Microrings, Tissues, Signal detection, Resonators, Ultrasonics, Finite element methods, Photoacoustic imaging, Brain, Pulsed laser operation

Read Abstract +

Photoacoustic imaging technology is a new functional imaging method in biomedical application field. It is based on photoacoustic effect. It combines the advantages of high resolution and rich contrast of optical imaging with the advantages of high penetration depth of acoustic imaging. It can be used for noninvasive detection of structural, functional and molecular abnormalities in biological tissues, Multi scale information of micro and macro world is detected. Photoacoustic microscope is a micro imaging device based on photoacoustic effect. It can measure the amplitude and phase of photoacoustic signals generated at different positions on the solid surface, so as to determine the optical properties, thermal properties, elasticity or geometric structure of samples. However, the traditional optical resolution photoacoustic microscopy imaging system usually uses strong focused Gaussian beam, which has long imaging time and weak penetrating ability, so it is difficult to achieve fast imaging of solid inner surface. The vortex beam has the characteristics of spiral wavefront structure, circular distribution of light intensity, definite orbital angular momentum and phase singularity. Based on the above characteristics, vortex light has high directivity, wide frequency band and wide bandwidth, which can be used for deep and efficient penetrating imaging of inner surface. In this paper, Matlab is used to generate the ideal and transmitted vortex light phase diagram and spot, and then k-wave simulation software is used to build the virtual simulation platform of vortex photoacoustic microscopy imaging system. In the MATLAB simulation, the vortex light beam irradiates on the vascular cells to image the vascular tissue. The results show that vorticity light has better penetrating ability and faster imaging speed than Gaussian light. This study is helpful to detect the deep structure and properties of vascular cells by using vortex light, and put forward a new idea for the deep fast imaging of solid surface.

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