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Liquid lens based holographic camera for real 3D scene hologram acquisition using end-to-end physical model-driven network

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Light(Science & Applications) 2024年第3期13卷 488-497页

作者： Di wang Zhao-Song Li Yi Zheng You-Ran Zhao Chao Liu Jin-Bo Xu Yi-Wei Zheng Qian huang Chen-Liang Chang Da-Wei Zhang Song-Lin Zhuang qiong-hua wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China

With the development of artificial intelligence,neural network provides unique opportunities for holography,such as high fidelity and dynamic *** to obtain real 3D scene and generate high fidelity hologram in real time is an urgent ***,we propose a liquid lens based holographic camera for real 3D scene hologram acquisition using an end-to-end physical model-driven network(EEPMD-Net).As the core component of the liquid camera,the first 10 mm large aperture electrowetting-based liquid lens is proposed by using specially fabricated *** design of the liquid camera ensures that the multi-layers of the real 3D scene can be obtained quickly and with great imaging *** EEPMD-Net takes the information of real 3D scene as the input,and uses two new structures of encoder and decoder networks to realize low-noise phase *** comparing the intensity information between the reconstructed image after depth fusion and the target scene,the composite loss function is constructed for phase optimization,and the high-fidelity training of hologram with true depth of the 3D scene is realized for the first *** holographic camera achieves the high-fidelity and fast generation of the hologram of the real 3D scene,and the reconstructed experiment proves that the holographic image has the advantage of low *** proposed holographic camera is unique and can be used in 3D display,measurement,encryption and other fields.

关键词： calculation solution holographic

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Color liquid crystal grating based color holographic 3D display system with large viewing angle

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Light(Science & Applications) 2024年第1期13卷 103-112页

作者： Di wang Yi-Long Li Fan Chu Nan-Nan Li Zhao-Song Li Sin-Doo Lee Zhong-Quan Nie Chao Liu qiong-hua wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191China Display Technology Research Center Seoul National UniversityGwanak-ro 1Gwanak-guSeoul 08826Republic of Korea Key Lab of Advanced Transducers and Intelligent Control System Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China

Holographic 3D display is highly desirable for numerous applications ranging from medical treatments to military ***,it is challenging to simultaneously achieve large viewing angle and high-fidelity color reconstruction due to the intractable constraints of existing ***,we conceptually propose and experimentally demonstrate a simple and feasible pathway of using a well-designed color liquid crystal grating to overcome the inevitable chromatic aberration and enlarge the holographic viewing angle,thus enabling large-viewing-angle and color holographic 3D *** use of color liquid crystal grating allows performing secondary diffraction modulation on red,green and blue reproduced images simultaneously and extending the viewing angle in the holographic 3D display *** principle,a chromatic aberration-free hologram generation mechanism in combination with the color liquid crystal grating is proposed to pave the way for on such a superior holographic 3D *** proposed system shows a color viewing angle of~50.12°,which is about 7 times that of the traditional system with a single spatial light *** work presents a paradigm for achieving desirable holographic 3D display,and is expected to provide a new way for the wide application of holographic display.

关键词： holographic angle crystal

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Optical encryption of multiple three-dimensional objects based on multiple interferences and single-pixel digital holography

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Chinese Physics B 2018年第3期27卷 253-259页

作者： Ying wang Qi Liu Jun wang qiong-hua wang School of Electronics and Information Engineering Sichuan University Chengdu 610065 China

We present an optical encryption method of multiple three-dimensional objects based on multiple interferences and single-pixel digital holography. By modifying the Mach-Zehnder interferometer, the interference of the multiple objects beams and the one reference beam is used to simultaneously encrypt multiple objects into a ciphertext. During decryption, each three-dimensional object can be decrypted independently without having to decrypt other objects. Since the single- pixel digital holography based on compressive sensing theory is introduced, the encrypted data of this method is effectively reduced. In addition, recording fewer encrypted data can greatly reduce the bandwidth of network transmission. Moreover, the compressive sensing essentially serves as a secret key that makes an intruder attack invalid, which means that the system is more secure than the conventional encryption method. Simulation results demonstrate the feasibility of the proposed method and show that the system has good security performance.

关键词： multiple three-dimensional objects encryption single-pixel digital holography phase-shifting in- terference compressive sensing

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Tunable liquid crystal grating based holographic 3D display system with wide viewing angle and large size

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Light(Science & Applications) 2022年第7期11卷 1575-1584页

作者： Yi-Long Li Nan-Nan Li Di wang Fan Chu Sin-Doo Lee Yi-Wei Zheng qiong-hua wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijingChina Display Technology Research Center Seoul National UniversityGwanak-guSeoulRepublic of Korea

As one of the most ideal display approaches,holographic 3-dimensional(3D)display has always been a research hotspot since the holographic images reproduced in such system are very similar to what humans see the actual ***,current holographic 3D displays suffer from critical bottlenecks of narrow viewing angle and small ***,we propose a tunable liquid crystal grating-based holographic 3D display system with wide viewing angle and large *** tunable liquid crystal grating,providing an adjustable period and the secondary diffraction of the reconstructed image,enables to simultaneously implement two different hologram generation methods in achieving wide viewing angle and enlarged size,*** using the secondary diffraction mechanism of the tunable liquid crystal grating,the proposed system breaks through the limitations of narrow viewing angle and small size of holographic 3D *** proposed system shows a viewing angle of 57.4°,which is nearly 7 times of the conventional case with a single spatial light modulator,and the size of the reconstructed image is enlarged by about *** proposed system will have wide applications in medical diagnosis,advertising,education and entertainment and other fields.

关键词： holographic system angle

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Cross-talk-free integral imaging three-dimensional display based on a pyramid pinhole array

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Photonics Research 2015年第4期3卷 173-176页

作者： huan Deng qiong-hua wang Fei Wu Cheng-Gao Luo Yao Liu School of Electronics and Information Engineering Sichuan UniversityChengdu 610065China Institute of Three-Dimensional Display Technology Chengdu Technological UniversityChengdu 611730China

We propose a cross-talk-free integral imaging 3D display based on a pyramid pinhole array. The pyramid pinhole array is used to provide a point light source array. Since the generated point light source array is behind a transmission-type display panel that displays an elemental image array, the pseudoscopic problem can be resolved. By setting the appropriate parameters for the pyramid pinhole array, the cross talk can be *** experimentally verify the reconstruction of the orthoscopic and cross-talk-free 3D images using the proposed 3D display.

关键词： free Cross-talk-free integral imaging three-dimensional display based on a pyramid pinhole array EIA

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Integral imaging-based tabletop light field 3D display with large viewing angle

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Opto-Electronic Advances 2023年第6期6卷 19-30页

作者： Yan Xing Xing-Yu Lin Lin-Bo Zhang Yun-Peng Xia Han-Le Zhang Hong-Yu Cui Shuang Li Tong-Yu wang Hui Ren Di wang huan Deng qiong-hua wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China College of Electronics and Information Engineering Sichuan UniversityChengdu 610065China

Light field 3D display technology is considered a revolutionary technology to address the critical visual fatigue issues in the existing 3D *** light field 3D display provides a brand-new display form that satisfies multi-user shared viewing and collaborative works,and it is poised to become a potential alternative to the traditional wall and portable display ***,a large radial viewing angle and correct radial perspective and parallax are still out of reach for most current tabletop light field 3D displays due to the limited amount of spatial *** address the viewing angle and perspective issues,a novel integral imaging-based tabletop light field 3D display with a simple flat-panel structure is proposed and developed by applying a compound lens array,two spliced 8K liquid crystal display panels,and a light shaping diffuser *** compound lens array is designed to be composed of multiple three-piece compound lens units by employing a reverse design scheme,which greatly extends the radial viewing angle in the case of a limited amount of spatial information and balances other important 3D display *** proposed display has a radial viewing angle of 68.7°in a large display size of 43.5 inches,which is larger than the conventional tabletop light field 3D *** radial perspective and parallax are correct,and high-resolution 3D images can be reproduced in large radial viewing *** envision that this proposed display opens up possibility for redefining the display forms of consumer electronics.

关键词： tabletop light field 3D display integral imaging compound lens array radial viewing angle

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Biomimetic leaf structures for ultra-thin electromagnetic wave absorption

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Nano Research 2024年第5期17卷 4507-4516页

作者： Shikun Hou Ying wang Feng Gao Fei Jin Benfeng Zhu qiong Wu Hongliang Ge Zhihai Cao hua Yang Magnetism Key Laboratory of Zhejiang Province&College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Department of Materials Science and Engineering Guangdong Technion-Israel Institute of TechnologyShantou 515063China Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing&Finishing of Textiles Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China

Ultra-thin electromagnetic wave(EMW)absorbers present challenging demands on EMW absorption *** inspiration from heather leaf structures,this study introduces an innovative design strategy for EMW absorbing material,proposing biomimetic leaf SnO_(2) structures(bio-SnO_(2))on carbon fabric(CF).By employing leaf-shaped SnS2 as precursors,biomimetic leaf SnO_(2) nanostructures are constructed on CF surface after a simple thermal treatment,resulting in bio-SnO_(2)@CF *** results indicate that bio-SnO_(2)@CF exhibits an exceptional minimum reflection loss of-54.8 dB at an incredibly thin thickness of 1.2 *** cross section(RCS)simulations further validate the outstanding EMW attenuation ability of bio-SnO_(2)@CF,attaining a maximum RCS reduction value of 16.9 dBm^(2) at an incident wave angle ofθ=0°.This novel research showcases the biomimetic structural design strategy and its remarkable function in enhancing the EMW absorbing performance at ultra-thin absorber thickness.

关键词： biomimetic leaf structures electromagnetic wave absorption ultra-thin thickness

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Large viewing angle holographic 3D display system based on maximum diffraction modulation

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Light(Advanced Manufacturing) 2023年第3期4卷 195-205页

作者： Di wang Nan-Nan Li Yi-Long Li Yi-Wei Zheng Zhong-Quan Nie Zhao-Song Li Fan Chu qiong-hua wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China Key Lab of Advanced Transducers and Intelligent Control System Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China

An ideal holographic 3D display should have the characteristics of large viewing angle,full color,and low speckle ***,the viewing angle of the holographic 3D display is usually limited by existing strategies,which vastly hinders its extensive *** this paper,a large viewing angle holographic 3D display system based on maximum diffraction modulation is *** core of the proposed system comprises the spatial light modulators(SLMs)and liquid crystal *** also present a new feasible scheme for the realization of large viewing angle holographic 3D *** is achieved by considering the maximum diffraction angle of SLM as the limited diffraction modulation range of each image *** doing so,we could not only give access to the maximum hologram size of the object,but also tune the reconstructed image of secondary diffraction by using a self-engineered liquid crystal *** importantly,the proposed maximum diffraction modulation scheme enables the viewing angle of the proposed system to be enlarged to 73.4°.The proposed system has huge application potential in the fields such as education,culture,and entertainment.

关键词： 3D display Liquid crystal grating Holographic 3D display Spatial light modulator

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Bioinspired Double-stranded Yarn with Alternating Hydrophobic/Hydrophilic Patterns for High-efficiency Fog Collection

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Chinese Journal of Polymer Science 2024年第7期42卷 968-975,I0008页

作者： Lan-Lan Hou Meng-Na Qiu Ya-qiong wang Tong-hua Bai Zhi-Min Cui Jing-Chong Liu Ying-Qun Qi Nü wang Yong Li Yong Zhao Beijing Institute of Graphic Communication Beijing102600China Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191China Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China Beijing Key Laboratory for Bioengineering and Sensing TechnologyDaxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing100083China

Efforts to develop innovative water harvesting strategies offer powerful solutions to alleviate the water crisis,especially in remote and arid *** by the hydrophobic/hydrophilic pattern of desert beetles and water self-propulsion property of spider silks,a double-strand hydrophobic PVDF-HFP/hydrophilic PAN nanofibers yarn is proposed by electrospinning and twisting *** double-strand cooperation approach allows for water deposition on hydrophobic PVDF-HFP segment and transport under the asymmetric capillary driving force of hydrophilic PAN segment,thus speeded up the aggregation and growth of *** effects of the composition and the diameter ratio of the two primary yarns were studied and optimized for boosting fog collection *** double-strand anisotropic yarn not only provide an effective method for water harvesting,but also hold the potential to inspire innovative design concepts for fog collection materials in challenging environments.

关键词： Fog collection Wettability Electrospinning Nanofibers Spider silk

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YTE-17 inhibits colonic carcinogenesis by resetting antitumor immune response via Wnt5a/JNK mediated metabolic signaling

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Journal of Pharmaceutical Analysis 2024年第4期14卷 525-541页

作者： hua Sui Wanli Deng qiong Chai Bing Han Yuli Zhang Zhenzhen Wei Zan Li Ting wang Jiling Feng Man Yuan Qingfeng Tang Hongxi Xu Medical Experiment Center Jiading Branch of Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai201803China Translational Medicine Research Center for Cancer Prevention and Treatment Shanghai General Hospital Jiading Branch-School of Pharmacy of Shanghai University of Traditional Chinese Medicine Joint LaboratoryShanghai201803China Department of Medical Oncology Putuo HospitalShanghai University of Traditional Chinese MedicineShanghai200062China School of Pharmacy Shanghai University of Traditional Chinese MedicineShanghai201203China The Second Clinical Medical College of Henan University of Traditional Chinese Medicine Zhengzhou450000China Shanghai University of Traditional Chinese Medicine Shanghai201203China Precision Research Center for Refractory Diseases Institute for Clinical ResearchShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai201620China

The density and composition of lymphocytes infiltrating colon tumors serve as predictive factors for the clinical outcome of colon *** previous studies highlighted the potent anti-cancer properties of the principal compounds found in Garcinia yunnanensis(YTE-17),attributing these effects to the regu-lation of multiple signaling ***,knowledge regarding the mechanism and effect of YTE-17 in the prevention of colorectal cancer is *** this study,we conducted isobaric tags for relative and absolute quantification(iTRAQ)analysis on intestinal epithelial cells(IECs)exposed YTE-17,both in vitro and in vivo,revealing a significant inhibition of the Wnt family member 5a(Wnt5a)/c-Jun N-terminal kinase(JNK)signaling ***,we elucidated the influence and mechanism of YTE-17 on the tumor microenvironment(TME),specifically focusing on macrophage-mediated T helper 17(Th17)cell induction in a colitis-associated cancer(CAC)model with Wnt5a ***,we performed the single-cell RNA sequencing(scRNA-seq)on the colonic tissue from the Wnt5a-deleted CAC model to characterize the composition,lineage,and functional status of immune mesenchymal cells during different stages of colorectal cancer(CRC)***,our findings demon-strate a significant reduction in M2 macrophage polarization and Th17 cell phenotype upon treatment with YTE-17,leading to the restoration of regulatory T(Treg)/Th17 cell balance in azoxymethane(AOM)/dextran sodium sulfate(DSS)***,we also confirmed that YTE-17 effectively inhibited the glycolysis of Th17 cells in both direct and indirect co-culture systems with M2 ***,our study shed light on potential mechanisms linking the non-canonical Wnt5a/JNK signaling pathway and well-established canonical b-catenin oncogenic pathway in ***,we proposed that Wnt5a/JNK signaling activity in IECs promotes the development of cancer stem cells with b-catenin activity within

关键词： Tumor microenvironment Intestinal epithelial cells Treg/Th17 cells Metabolism Wnt5a/JNK signaling Tumorigenesis

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