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超高速和极高速光学成像技术研究进展(特邀)

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激光与光电子学进展 2024年第2期61卷 281-304页

作者：栗星柏晨李润泽彭彤田璇闵俊伟杨延龙但旦于湘华梁晋阳姚保利中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室陕西西安710119 中国科学院大学北京100049 魁北克大学国立科学研究院能源材料与通讯研究所应用计算成像实验室加拿大魁北克J3X1P7

高速成像技术在物理、化学、生物医学、材料科学及工业等众多领域扮演着十分重要的角色。受电荷存储和读取速度的限制,基于电子成像器件的数码相机成像速度难以进一步提高。近年来,随着成像新技术的发展,超高速和极高速光学成像的性能... 详细信息

高速成像技术在物理、化学、生物医学、材料科学及工业等众多领域扮演着十分重要的角色。受电荷存储和读取速度的限制,基于电子成像器件的数码相机成像速度难以进一步提高。近年来,随着成像新技术的发展,超高速和极高速光学成像的性能已得到显著提升,具备更高的时间分辨率、空间分辨率及更大的序列深度等。介绍高速成像技术的发展历程,根据成像方式,将近年来具有代表性的新型超高速和极高速光学成像技术分为直接成像和编码计算成像两个类别。分别介绍和讨论各种新型超高速和极高速光学成像技术的概念和原理,并比较各自的优缺点。最后,对这一领域的发展趋势和前景进行展望。本文旨在帮助研究者系统了解超高速和极高速光学成像技术的基本知识、最新研究发展趋势和潜在应用,为该领域科学研究提供参考。

关键词：高速成像超高速成像极高速成像时间分辨率空间分辨率序列深度

Digital holographic shape measurement using Fizeau microscopy

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Chinese Optics Letters 2015年第10期13卷 40-44页

作者： D.G.Abdelsalam junwei min Daesuk Kim Baoli Yao State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of Sciences Engineering and Surface Metrology Laboratory National Institute of Standards Division of Mechanical System Engineering Chonbuk National University

We present a Fizeau interferometer using a microscopic objective as a tool for surface contouring without the need for a numerical lens for reconstruction. The interferometer is associated with a telescope system to feature the object with collimated light. The experiment is conducted on two objects possessing different step *** phase maps from the captured off-axis holograms are calculated numerically, which allows us to deduce the contours of the objects. The great advantages of the presented technique are that it can be done in real time and there is no need for numerical lenses for micro-objects reconstruction.

关键词： interferometer holographic captured reconstructed numerically microscopic Reconstruction compensate wavefront filtered

Dual-wavelength in-line digital holography with untrained deep neural networks

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Photonics Research 2021年第12期9卷 2501-2510页

作者： CHEN BAI TONG PENG junwei min RUNZE LI YUAN ZHOU BAOLI YAO State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China Xi’an Jiaotong University Xi’an 710049China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266200China

Dual-wavelength in-line digital holography(DIDH)is one of the popular methods for quantitative phase imaging of objects with non-contact and high-accuracy *** technical challenges in the reconstruction of these objects include suppressing the amplified noise and the twin-image that respectively originate from the phase difference and the phase-conjugated *** contrast to the conventional methods,the deep learning network has become a powerful tool for estimating phase information in DIDH with the assistance of noise suppressing or twin-image removing ***,most of the current deep learning-based methods rely on supervised learning and training instances,thereby resulting in weakness when it comes to applying this training to practical imaging *** this paper,a new DIDH network(DIDH-Net)is proposed,which encapsulates the prior image information and the physical imaging process in an untrained deep neural *** DIDHNet can effectively suppress the amplified noise and the twin-image of the DIDH simultaneously by automatically adjusting the weights of the *** obtained results demonstrate that the proposed method with robust phase reconstruction is well suited to improve the imaging performance of DIDH.

关键词： neural networks network

Rosemary extract improves egg quality by altering gut barrier function,intestinal microbiota and oviductal gene expressions in late-phase laying hens

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Journal of Animal Science and Biotechnology 2024年第1期15卷 295-312页

作者： Lianhua Zhang junwei Ge Fei Gao min Yang Hui Li Fei Xia Hongtong Bai Xiangshu Piao Zhiying Sun Lei Shi Key Laboratory of Plant Resources Institute of BotanyChinese Academy of SciencesBeijing 100093China China National Botanical Garden Beijing 100093China College of Pharmacy Shandong University of Traditional Chinese MedicineJinan 250355China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Rosemary extract(RE)has been reported to exert antioxidant ***,the application of RE in late-phase laying hens on egg quality,intestinal barrier and microbiota,and oviductal function has not been systematically *** study was investigated to detect the potential effects of RE on performance,egg quality,serum parameters,intestinal heath,cecal microbiota and metabolism,and oviductal gene expressions in late-phase laying hens.A total of 21065-week-old“Jing Tint 6”laying hens were randomly allocated into five treatments with six replicates and seven birds per replicate and fed basal diet(CON)or basal diet supplemented with chlortetracycline at 50 mg/kg(CTC)or RE at 50 mg/kg(RE50),100 mg/kg(RE100),and 200 mg/kg(RE200).Results Our results showed that RE200 improved(Pmino acid metabolism of cecal microbiota and increased butyrate synthesizing enzymes,including 3-oxoacid Co A-transferase and butyrate-acetoacetate Co ***,transcriptomic analysis revealed that RE200 improved gene expressions and functional pathways related to immunity and albumen formation in the oviductal *** Dietary supplementation with 2

关键词： Intestinal health Laying hens Microbiota Oviductal function Phytochemicals Production

Gas diffusion in catalyst layer of flow cell for CO_(2) electroreduction toward C_(2+) products

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Nano Research 2024年第3期17卷 1101-1106页

作者： Xiqing Wang Qin Chen Yajiao Zhou Yao Tan Ye Wang Hongmei Li Yu Chen Mahmoud Sayed Ramadan A.Geioushy Nageh K.Allam junwei Fu Yifei Sun min Liu Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics and ElectronicsCentral South UniversityChangsha 410083China School of Energy and Power Engineering Beihang UniversityBeijing 100191China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China Central Metallurgical Research and Development Institute(CMRDI) P.O.Box 87Helwan 11421CairoEgypt Energy Materials Laboratory School of Sciences and EngineeringThe American University in CairoNew Cairo 11835Egypt Research Center for Advanced Energy and Carbon Neutrality Beihang UniversityBeijing 100191China

The use of gas diffusion electrode(GDE)based flow cell can realize industrial-scale CO_(2) reduction reactions(CO_(2)RRs).Controlling local CO_(2) and CO intermediate diffusion plays a key role in CO_(2)RR toward multi-carbon(C_(2+))*** this work,local CO_(2) and CO intermediate diffusion through the catalyst layer(CL)was investigated for improving CO_(2)RR toward C_(2+)*** gas permeability tests and finite element simulation results indicated CL can balance the CO_(2) gas diffusion and residence time of the CO intermediate,leading to a sufficient CO concentration with a suitable CO_(2)/H_(2)O supply for high C_(2+)*** a result,an excellent selectivity of C_(2+)products~79%at a high current density of 400 mA·cm^(-2) could be obtained on the optimal 500 nm Cu CL(Cu500).This work provides a new insight into the optimization of CO_(2)/H_(2)O supply and local CO concentration by controlling CL for C_(2+)products in CO_(2)RR flow cell.

关键词： gas diffusion electrode CO_(2)reduction Cu mass transfer C_(2)product

A Novel Fracturing Fluid with High-Temperature Resistance for Ultra-Deep Reservoirs

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Fluid Dynamics & Materials Processing 2024年第5期20卷 975-987页

作者： Lian Liu Liang Li Kebo Jiao junwei Fang Yun Luo Northwest Oilfield Branch China Petroleum&Chemical CorporationUrumqi830011China Sinopec Key Laboratory for Enhanced Recovery in Fractured and Cavernous Reservoir Urumqi830011China

Ultra-deep reservoirs play an important role at present in fossil energy *** to the related high temperature,high pressure,and high formation fracture pressure,however,methods for oil well stimulation do not produce satisfactory results when conventional fracturing fluids with a low pumping rate are *** response to the above problem,a fracturing fluid with a density of 1.2~1.4 g/cm^(3)was developed by using Potassium formatted,hydroxypropyl guanidine gum and zirconium crosslinking *** fracturing fluid was tested and its ability to maintain a viscosity of 100 mPa.s over more than 60 min was verified under a shear rate of 1701/s and at a temperature of 175℃.This fluid has good sand-carrying performances,a low viscosity after breaking the rubber,and the residue content is less than 200 mg/*** with ordinary reconstruction fluid,it can increase the density by 30%~40%and reduce the wellhead pressure of 8000 m level reconstruction ***,the new fracturing fluid can significantly mitigate safety risks.

关键词： Ultra-deep reservoir high-temperature resistance weighted fracturing fluid guanidine gum potassium formatted

Digital holographic microscopy with phase-shift-free structured illumination

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Photonics Research 2014年第3期2卷 87-91页

作者： Juanjuan Zheng Peng Gao Baoli Yao Tong Ye ming Lei junwei min Dan Dan Yanlong Yang Shaohui Yan State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China Institut für Technische Optik Universität StuttgartPfaffenwaldring 970569 StuttgartGermany Department of Bioengineering Clemson UniversityClemson-MUSC Bioengineering ProgramCharlestonSouth Carolina 29425USA

When structured illumination is used in digital holographic microscopy(DHM),each direction of the illumination fringe is required to be shifted at least three times to perform the phase-shifting *** this paper,we propose a scheme for spatial resolution enhancement of DHM by using the structured illumination but without phase *** structured illuminations of different directions,which are generated by a spatial light modulator,illuminate the sample sequentially in the object *** formed object waves interfere with a reference wave in an off-axis configuration,and a CCD camera records the generated *** the object waves are reconstructed numerically,a synthetic aperture is performed by an iterative algorithm to enhance the spatial *** resolution improvement of the proposed method is proved and demonstrated by both simulation and experiment.

关键词： illumination holographic phase

基于二维朗奇相位光栅的四波横向剪切干涉定量相位成像

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光子学报 2022年第11期51卷 212-221页

作者：宋金伟闵俊伟袁勋薛雨阁姚保利中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室西安710119 中国科学院大学北京100049

定量相位成像具有无标记、非入侵及三维观测的特点,在生物医学、工业检测等领域有着显著的优势。本文提出利用二维朗奇相位光栅实现基于四波横向剪切干涉的定量相位成像的方法。理论分析了光栅周期和照明波长对四波剪切干涉的影响,得到... 详细信息

定量相位成像具有无标记、非入侵及三维观测的特点,在生物医学、工业检测等领域有着显著的优势。本文提出利用二维朗奇相位光栅实现基于四波横向剪切干涉的定量相位成像的方法。理论分析了光栅周期和照明波长对四波剪切干涉的影响,得到了光栅周期与探测器像素尺寸的最佳匹配关系,论证了宽光谱光源照明下定量相位成像的可行性。实验搭建了结构紧凑的四波剪切干涉定量相位显微成像装置,实现了对PMMA微球、微透镜阵列和葡根霉菌切片的定量相位成像和测量。该装置可方便地与普通光学显微镜相结合,具有巨大的应用潜力。

关键词：干涉术四波横向剪切干涉定量相位成像相位测量相位光栅

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结构光照明光切片显微图像的高保真重构方法

光子学报 2023年第11期52卷 290-300页

作者：谢贤峰千佳李星党诗沛柏晨闵俊伟但旦姚保利中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室西安710119 中国科学院大学北京100049

光切片图像的质量与使用的重构算法直接相关,传统的均方根算法虽然简洁,但在原始图像信噪比和条纹对比度不高时重构效果不佳,得到的三维重建结果并不理想。针对该问题,提出一种去背景和去卷积相结合的光切片方法。与传统均方根算法相比... 详细信息

光切片图像的质量与使用的重构算法直接相关,传统的均方根算法虽然简洁,但在原始图像信噪比和条纹对比度不高时重构效果不佳,得到的三维重建结果并不理想。针对该问题,提出一种去背景和去卷积相结合的光切片方法。与传统均方根算法相比,该方法能有效减少残留条纹,提高微小细节的可见性。实验搭建了一套基于数字微镜器件的结构照明显微系统,以小鼠肾脏细胞、牛肺动脉内皮细胞等为样品进行了光切片实验。实验结果表明,该方法能获得更好的光切片和三维成像效果。

关键词：结构光照明显微镜光切片三维显微成像图像重构标准差