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Multidimensional optical tweezers synthetized by rigid-body emulated structured light

Photonics Research 2023年第9期11卷 1524-1534页

作者： liuhao zhu YUPING TAI HEHE LI HUAJIE HU XINZHONG LI YANGJIAN CAI YIJIE SHEN School of Physics and Engineering Henan University of Science and TechnologyLuoyang 471023China State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China Shandong Provincial Engineering and Technical Center of Light Manipulations and Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250014China Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University East China Normal UniversityShanghai 200241China Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Centre for Disruptive Photonic Technologies School of Physical and Mathematical Sciences and The Photonics InstituteNanyang Technological UniversitySingapore 637378Singapore

Structured light with more extended degrees of freedom(DoFs)and in higher dimensions is increasingly gaining traction and leading to breakthroughs such as super-resolution imaging,larger-capacity communication,and ultraprecise optical trapping or *** DoFs for manipulating an object can access more maneuvers and radically increase maneuvering precision,which is of significance in biology and related microscopic ***,manipulating particles beyond three-dimensional(3D)spatial manipulation by using current all-optical tweezers technology remains *** overcome this limitation,we theoretically and experimentally present six-dimensional(6D)structured optical tweezers based on tailoring structured light emulating rigid-body *** method facilitates the evaluation of the methodology of rigid-body mechanics to synthesize six independent DoFs in a structured optical trapping system,akin to six-axis rigid-body manipulation,including surge,sway,heave,roll,pitch,and *** contrast to previous 3D optical tweezers,our 6D structured optical tweezers significantly improved the flexibility of the path design of complex trajectories,thereby laying the foundation for next-generation functional optical manipulation,assembly,and micromechanics.

关键词： rigid trapping breakthrough

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摆线光束的微粒等间距操控(特邀)

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红外与激光工程 2021年第9期50卷 98-104页

作者：朱刘昊秦雪云台玉萍李新忠河南科技大学物理工程学院河南洛阳471023 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 河南科技大学化工与制药学院河南洛阳471023

轨道角动量(OAM)的发现为光镊的研究开辟了新的道路。但具有OAM的光束在操纵微粒时,由于生物细胞不可能大小形状完全相同,所以当其进行旋转等操作时,粒子运动速度的不均匀会导致粒子之间的间距不可控。针对该问题,首先通过任意曲线塑形... 详细信息

轨道角动量(OAM)的发现为光镊的研究开辟了新的道路。但具有OAM的光束在操纵微粒时,由于生物细胞不可能大小形状完全相同,所以当其进行旋转等操作时,粒子运动速度的不均匀会导致粒子之间的间距不可控。针对该问题,首先通过任意曲线塑形技术,并为传统摆线公式附加曲率调控参数提出了一种调控模式丰富的摆线光束,理论分析了该光束的OAM和梯度力,证明了解决上述问题的可能性。最后在实验中实现了粒子在运动过程中的启停,且成功操纵三个粒子进行等间距旋转,实验测得三个微粒在整个旋转过程中间距变化的误差可以维持在纳米级。这项工作为未来光捕获和操纵多种微粒在其他领域的应用铺平了道路,特别是在生物科学领域。

关键词：物理光学全光光镊计算全息空间光调制

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多平面波干涉的光学涡旋晶格特性研究

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光学学报 2021年第21期41卷 185-192页

作者：秦雪云朱刘昊台玉萍汤洁李新忠河南科技大学物理工程学院河南洛阳471023 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 河南科技大学化工与制药学院河南洛阳471023

多平面波干涉(MPWI)是产生光学涡旋晶格(OVL)的一种经典方式。通过定义波矢空间坐标系,提出了一种基于MPWI的OVL调控方法,模拟生成了四个平面波和五个平面波干涉产生的OVL,计算了其梯度力和能流分布,分析了其在微粒操纵领域中的应用。然... 详细信息

多平面波干涉(MPWI)是产生光学涡旋晶格(OVL)的一种经典方式。通过定义波矢空间坐标系,提出了一种基于MPWI的OVL调控方法,模拟生成了四个平面波和五个平面波干涉产生的OVL,计算了其梯度力和能流分布,分析了其在微粒操纵领域中的应用。然后,通过调控其部分波矢大小和旋转波矢角度,得到了更加丰富灵活的光场分布。最终,通过分析其梯度力和能流分布,发现该调控方法可以定制适合粒子操纵的特殊光场。该研究丰富了基于MPWI的OVL的空间模式,为OVL的应用提供了新思路。

关键词：物理光学多平面波干涉光学涡旋晶格微粒操纵

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高阶衍射级光束的轨道角动量

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量子电子学报 2022年第1期39卷 127-135页

作者：樊海豪朱刘昊台玉萍李新忠河南科技大学物理工程学院河南洛阳471023 河南科技大学化工与制药学院河南洛阳471023 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

为研究高阶衍射级光束的轨道角动量,基于计算全息法在空间光调制器的傅里叶平面产生了不同衍射级的完美涡旋光束,并利用球面波干涉法对其拓扑荷值进行了测量。理论和实验结果表明不同衍射级p上的整数阶和分数阶完美涡旋光束的拓扑荷值l... 详细信息

为研究高阶衍射级光束的轨道角动量,基于计算全息法在空间光调制器的傅里叶平面产生了不同衍射级的完美涡旋光束,并利用球面波干涉法对其拓扑荷值进行了测量。理论和实验结果表明不同衍射级p上的整数阶和分数阶完美涡旋光束的拓扑荷值l都满足l=mp的关系,其中m是相位掩模板的拓扑荷值。并进一步对不同衍射级的光学涡旋阵列进行了实验研究,结果表明光学涡旋阵列中光学涡旋的拓扑荷值满足l=p的关系,高阶衍射级上的衍射光束比+1级衍射光束具有更大的轨道角动量。该研究为光学涡旋及光学涡旋阵列进一步的研究及应用提供了理论和实验参考。

关键词：傅里叶光学轨道角动量计算全息完美涡旋光束光学涡旋阵列

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霍曼转移结构光束设计及微粒操纵(特邀)

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光子学报 2022年第7期51卷 253-260页

作者：李新忠朱刘昊樊海豪魏文军马鑫秦雪云胡华杰台玉萍河南科技大学物理工程学院河南洛阳471023

结合光束塑形技术、坐标变换技术、傅里叶相移定理,成功产生了霍曼转移结构光束,其具备相位梯度,从而拥有在微观世界中输运粒子的能力,并且大小、结构、相位梯度,均可任意调控,在应用中可依据实际需求对光束进行相应的调整。搭建光镊实... 详细信息

结合光束塑形技术、坐标变换技术、傅里叶相移定理,成功产生了霍曼转移结构光束,其具备相位梯度,从而拥有在微观世界中输运粒子的能力,并且大小、结构、相位梯度,均可任意调控,在应用中可依据实际需求对光束进行相应的调整。搭建光镊实验光路,并使用霍曼转移结构光束对聚苯乙烯粒子进行了操控,其实验结果与理论相符,可以使粒子完美的沿着轨道进行输运。该研究在光学微操纵特别是粒子的变轨运输领域具有重要的意义。

关键词：物理光学光镊光操作全息术空间光调制器光学涡旋

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Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

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Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 12-17页

作者： Song Jiang Congwen zhu Ning Jiang State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The dominant annual cycle of sea surface temperature(SST)in the tropical Pacific exhibits an antisymmetric mode,which explains 83.4%total variance,and serves as a background of El Niño-Southern Oscillation(ENSO).However,there is no consensus yet on its anomalous impacts on the phase and amplitude of *** on data during 1982-2022,results show that anomalies of the antisymmetric mode can affect the evolution of ENSO on the interannual scale via Bjerknes feedback,in which the positive(negative)phase of the antisymmetric mode can strengthen El Niño(La Niña)in boreal winter via an earlier(delayed)seasonal cycle transition and larger(smaller)annual *** magnitude of the SST anomalies in the equatorial eastern Pacific can reach more than±0.3◦C,regulated by the changes in the antisymmetric mode based on random sensitivity *** reveal the spatial pattern of the annual cycle associated with the seasonal phase-locking of ENSO evolution and provide new insight into the impact of the annual cycle of background SST on ENSO,which possibly carries important implications for forecasting ENSO.

关键词： Annual cycle SST anomaly Antisymmetric mode ENSO

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Satellite remote sensing reveals overwhelming recovery of forest from disturbances in Asia

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 46-51页

作者： Yiying zhu Hesong Wang Anzhi Zhang School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina Key Laboratory of Regional Climate and Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Forestry and Landscape Architecture Xinjiang Agricultural UniversityUrumqiChina

Forest ecosystems play key roles in mitigating human-induced climate change through enhanced carbon uptake;however,frequently occurring climate extremes and human activities have considerably threatened the stability of *** the same time,detailed accounts of disturbances and forest responses are not yet well quantified in *** study employed the Breaks For Additive Seasonal and Trend method-an abrupt-change detection method-to analyze the Enhanced Vegetation Index time series in East Asia,South Asia,and Southeast *** approach allowed us to detect forest disturbance and quantify the resilience after *** showed that 20%of forests experienced disturbance with an increasing trend from 2000 to 2022,and Southeast Asian countries were more severely affected by ***,95%of forests had robust resilience and could recover from disturbance within a few *** resilience of forests suffering from greater magnitude of disturbance tended to be stronger than forests with lower disturbance *** summary,this study investigated the resilience of forests across the low and middle latitudes of Asia over the past two *** authors found that most forests exhibited good resilience after disturbance and about two-thirds had recovered to a better state in *** findings of this study underscore the complex relationship between disturbance and resilience,contributing to comprehension of forest resilience through satellite remote sensing.

关键词： Forest ecosystem Enhanced vegetation index Breaks for additive seasonal and trend method Disturbance Resilience

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“Slope-adsorption & plateau-pore filling” mechanism unlocking the potential of hard carbon anodes for “fast-charging & large-sized”batteries

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Science China Materials 2025年第1期 309-311页

作者： Tian Liang Xiaoming zhu Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology

To date, there has been no report on fast-charging and Ahlevel sodium-ion batteries (SIBs) by utilizing thick hard carbon anodes that demonstrate prolonged cycling life and high areal capacity at high rates. Further, the relationship among the complex structure of hard carbon, storage mechanism, and fastcharging performance in alkali-metal ion batteries has been a subject of ongoing debate [1,2].

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The emerging role of nitric oxide in the synaptic dysfunction of vascular dementia

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Neural Regeneration Research 2025年第2期20卷 402-415页

作者： Xiaorong Zhang Zhiying Chen Yinyi Xiong Qin Zhou Ling-Qiang zhu Dan Liu Department of Pathology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Jiujiang Clinical Precision Medicine Research Center JiujiangJiangxi ProvinceChina Center for Cognitive Science and Transdisciplinary Studies Jiujiang UniversityJiangxi ProvinceChina Department of Neurology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Rehabilitation Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

With an increase in global aging,the number of people affected by cerebrovascular diseases is also increasing,and the incidence of vascular dementia-closely related to cerebrovascular risk-is increasing at an epidemic ***,few therapeutic options exist that can markedly improve the cognitive impairment and prognosis of vascular dementia *** in Alzheimer’s disease and other neurological disorders,synaptic dysfunction is recognized as the main reason for cognitive *** oxide is one of the ubiquitous gaseous cellular messengers involved in multiple physiological and pathological processes of the central nervous ***,nitric oxide has been implicated in regulating synaptic plasticity and plays an important role in the pathogenesis of vascular *** review introduces in detail the emerging role of nitric oxide in physiological and pathological states of vascular dementia and summarizes the diverse effects of nitric oxide on different aspects of synaptic dysfunction,neuroinflammation,oxidative stress,and blood-brain barrier dysfunction that underlie the progress of vascular ***,we propose that targeting the nitric oxide-sGC-cGMP pathway using certain specific approaches may provide a novel therapeutic strategy for vascular dementia.

关键词： endoplasmic reticulum stress endothelial nitric oxide synthase gene therapy nitric oxide NO-sGC-cGMP pathway synaptic dysfunction vascular dementia

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