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Polarisation optics for biomedical and clinical applications:a review

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Light(Science & Applications) 2021年第11期10卷 2028-2047页

作者： Chao He Honghui He jintao Chang Binguo Chen Hui ma ma.tin j.booth Department of Engineering Science University of OxfordParks RoadOxford OX13PJUK Guangdong Engineering Center of Polarisation Imaging and Sensing Technology Tsinghua Shenzhen International Graduate SchoolTsinghua University518055 ShenzhenChina Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua University518055 ShenzhenChina Department of Physics Tsinghua University100084 BeijingChina Department of Biomedical Engineering Tsinghua University100084 BeijingChina

many polarisation techniques have been harnessed for decades in biological and clinical research,each based upon measurement of the vectorial properties of light or the vectorial transformations imposed on light by *** advanced vector measurement/sensing techniques,physical interpretation methods,and approaches to analyse biomedically relevant information have been developed and *** this review,we focus mainly on summarising methodologies and applications related to tissue polarimetry,with an emphasis on the adoption of the Stokes-Mueller *** recent breakthroughs,development trends,and potential multimodal uses in conjunction with other techniques are also *** primary goal of the review is to give the reader a general overview in the use of vectorial information that can be obtained by polarisation optics for applications in biomedical and clinical research.

关键词： clinical optics breakthrough

Shrinking multiplexed orbital angular momentum to the nanoscale

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Light(Science & Applications) 2021年第11期10卷 2026-2027页

作者： Chao He Yijie Shen Andrew Forbes ma.tin j.booth Department of Engineering Science University of OxfordParks RoadOxford OX13PJUK Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Department of Engineering Science University of OxfordParks RoadOxfordOX13PJUK

Orbital angular momentum interactions at the nanoscale have remained elusive because the phase structure becomes *** researchers have shown how to overcome this with tightly focused beams,demonstrating a recordhigh si... 详细信息

关键词： momentum nanoscale overcome

Vectorial adaptive optics

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eLight 2023年第1期3卷 35-44页

作者： Chao He jacopo Antonello ma.tin j.booth Department of Engineering Science University of OxfordParks RoadOxford OX13PJUnited Kingdom

Adaptive optics normally concerns the feedback correction of phase *** correction has been of benefit in various optical systems,with applications ranging in scale from astronomical telescopes to super-resolution *** we extend this powerful tool into the vectorial domain,encompassing higher-dimensional feedback correction of both polarisation and *** technique is termed vectorial adaptive optics(V-AO).We show that V-AO can be implemented using sensor feedback,indirectly using sensorless AO,or in hybrid form combining aspects of *** validate improvements in both vector field state and the focal quality of an optical system,through correction for commonplace vectorial aberration sources,ranging from objective lenses to biological *** technique pushes the boundaries of traditional scalar beam shaping by providing feedback control of extra vectorial degrees of *** paves the way for next generation AO functionality by manipulating the complex vectorial field.

关键词： field optics correction

magnetron sputtered nickel oxide with suppressed interfacial defect states for efficient inverted perovskite solar cells

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journal of Energy Chemistry 2025年第1期100卷 348-355页

作者： Guoqiang ma Qin Tan Zhaoning Li jingwei Xiu jiafeng Wang Tianle Cheng Dong He Qiang Sun Xuhang ma Francesco Lamberti Zhubing He Department of materials Science and Engineering Institute of Innovative Materials (I2M) Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG)Southern University of Science and Technology (SUSTech) Core Research Facilities Southern University of Science and Technology Department of Chemical Sciences Department of Industrial Engineering University of Padova

Widely used spin-coated nickle oxide （NiOx） based perovskite solar cells often suffer from severe interfacial reactions between the NiOxand adjacent perovskite layers due to surface defect states,which inherently impair device performance in a long-term view,even with surface molecule *** this study,we developed high-quality magnetron-sputtered NiOxthin films through detailed process optimization,and compared systematically sputtered and spin-coated NiOxthin film surfaces from materials to *** sputtered NiOxfilms exhibit improved crystallinity,smoother surfaces,and significantly reduced Ni3+or Ni vacancies compared to their spin-coated ***,the interface between the perovskite and sputtered NiOxfilm shows a substantially reduced density of defect *** solar cells （PSCs） fabricated with our optimally sputtered NiOxfilms achieved a high power conversion efficiency （PCE） of up to 19.93%and demonstrated enhanced stability,maintaining 86.2% efficiency during 500 h of maximum power point tracking under one standard sun ***,with the surface modification using (4-(2,7-dibromo-9,9-dimethylacridin-10（9H）-yl)butyl)p hosphonic acid （DmacPA）,the device PCE was further promoted to 23.07%,which is the highest value reported for sputtered NiOxbased PSCs so far.

关键词： Perovskite

Zwitterion-doped liquid crystal speckle reducers for immersive displays and vectorial imaging

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Light(Science & Applications) 2023年第11期12卷 2363-2377页

作者： Yihan jin Nathan P.Spiller Chao He Grahame Faulkner ma.tin j.booth Steve j.Elston Stephen M.Morris Department of Engineering Science University of OxfordParks RoadOxford OX13PJUK

Lasers possess many attractive features(e.g.,high brightness,narrow linewidth,well-defined polarization)that make them the ideal illumination source for many different scientific and technological endeavors relating to imaging and the display of high-resolution ***,their high-level of coherence can result in the formation of noise,referred to as speckle,that can corrupt and degrade ***,we demonstrate a new electro-optic technology for combatting laser speckle using a chiral nematic liquid crystal(LC)dispersed with zwitterionic *** are presented that demonstrate when driven at the optimum electric field conditions,the speckle noise can be reduced by>90%resulting in speckle contrast(C)values of C=0.07,which is approaching that required to be imperceptible to the human *** LC technology is then showcased in an array of different display and imaging applications,including a demonstration of speckle reduction in modern vectorial laser-based imaging.

关键词： polarization speckle crystal

Advances in Graphene‑Based Electrode for Triboelectric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： Bin Xie Yuanhui Guo Yun Chen Hao Zhang jiawei Xiao maoxiang Hou Huilong Liu Li ma Xin Chen Chingping Wong State Key Laboratory of Precision Electronic manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearable electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexible and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from problems such as durability,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs based on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-based TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-based TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-based TENGs.

关键词： Triboelectric nanogenerator Precision processing Graphene electrode Self-powered sensor

Adaptive optical microscopy: the ongoing quest for a perfect image

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Light(Science & Applications) 2014年第1期3卷 243-249页

作者： ma.tin j.booth Department of Engineering Science University of OxfordOxford OX13PJUK Centre for Neural Circuits and Behaviour University of OxfordOxford OX13SRUnited Kingdom School in Advanced Optical Technologies Friedrich-Alexander Universita¨t Erlangen-Nu¨rnberg91052 ErlangenGermany

Adaptive optics is becoming a valuable tool for high resolution microscopy,providing correction for aberrations introduced by the refractive index structure of *** is proving particularly promising for applications that require images from deep within biological tissue *** review recent developments in adaptive microscopy,including methods and applications.A range of advances in different microscope modalities is covered and prospects for the future are discussed.

关键词： aberrations adaptive optics microscopy

Subcellular spatial resolution achieved for deep-brain imaging in vivo using a minimally invasive multimode fiber

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Light(Science & Applications) 2018年第1期7卷 1-6页

作者： Sebastian A.Vasquez-Lopez Raphaël Turcotte Vadim Koren ma.tin Plöschner Zahid Padamsey ma.tin j.booth TomášČižmár Nigel j.Emptage Department of Pharmacology University of OxfordMansfield RoadOxford OX13QTUK Department of Engineering Science University of OxfordParks RoadOxford OX13PJUK School of Engineering Physics and MathematicsCollege of ArtScience&EngineeringUniversity of DundeeNethergateDundee DD14HN ScotlandUK. Institute of Scientific Instruments of the CAS Královopolská14761264 BrnoCzech Republic

Achieving intravital optical imaging with diffraction-limited spatial resolution of deep-brain structures represents an important step toward the goal of understanding the mammalian central nervous system1–*** in wavefrontshaping methods and computational power have recently allowed for a novel approach to high-resolution imaging,utilizing deterministic light propagation through optically complex media and,of particular importance for this work,multimode optical fibers(MMFs)5–*** report a compact and highly optimized approach for minimally invasive in vivo brain imaging *** volume of tissue lesion was reduced by more than 100-fold,while preserving diffraction-limited imaging performance utilizing wavefront control of light propagation through a single 50-μm-core ***,we demonstrated high-resolution fluorescence imaging of subcellular neuronal structures,dendrites and synaptic specializations,in deep-brain regions of living mice,as well as monitored stimulus-driven functional Ca2+*** results represent a major breakthrough in the compromise between high-resolution imaging and tissue damage,heralding new possibilities for deep-brain imaging in vivo.

关键词： multimode fiber resolution

Low cross-talk optical addressing of trapped-ion qubits using a novel integrated photonic chip

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Light(Science & Applications) 2024年第10期13卷 2179-2191页

作者： Ana S.Sotirova Bangshan Sun jamie D.Leppard Andong Wang Mohan Wang Andres Vazquez-Brennan David P.Nadlinger Simon Moser Alexander jesacher Chao He Fabian Pokorny ma.tin j.booth Christopher j.Ballance University of Oxford Department of PhysicsOxford Ox13PUUK University of Oxford Department of Engineering ScienceOxford Ox13PJUk institute of Biomedical Physics Medical University of InnsbruckMullerstraBe 446020 InnsbruckAustria

Individual optical addressing in chains of trapped atomic ions requires the generation of many small,closely spaced beams with low ***,implementing parallel operations necessitates phase,frequency,and amplitude control of each individual ***,we present a scalable method for achieving all of these capabilities using a high-performance integrated photonic chip coupled to a network of optical fibre *** chip design results in very low cross-talk between neighbouring channels even at the micrometre-scale spacing by implementing a very high refractive index contrast between the channel core and ***,the photonic chip manufacturing procedure is highly flexible,allowing for the creation of devices with an arbitrary number of channels as well as non-uniform channel spacing at the chip *** present the system used to integrate the chip within our ion trap apparatus and characterise the performance of the full individual addressing setup using a single trapped ion as a light-field *** measurements showed intensity cross-talk below~10^(-3) across the chip,with minimum observed cross-talk as low as~10^(-5).

关键词： spacing cross optical