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  1. Article ; Online: Fan-in/fan-out for heterogeneous 19-core fibers based on metasurfaces with nonuniform phase plates.

    Wang, Yang / Wang, Xutao / Li, Chunshu / He, Yichen / Huang, Zhanhua / Liu, Yaping / Yang, Zhiqun / Zhang, Lin

    Optics letters

    2023  Volume 49, Issue 1, Page(s) 5–8

    Abstract: In space-division-multiplexed transmission systems, it is essential to realize fan-in/fan-out ... a metasurface-based fan-in/fan-out device with nonuniform phase plates for heterogeneous 19-core fibers across ...

    Abstract In space-division-multiplexed transmission systems, it is essential to realize fan-in/fan-out devices that connect the cores between multicore fibers and single-mode fibers. In this Letter, we propose a metasurface-based fan-in/fan-out device with nonuniform phase plates for heterogeneous 19-core fibers across the full C band. Our results show that an average insertion loss of 0.85 dB and a maximum crosstalk of -25.5 dB can be achieved at 1550 nm. Across the C band, the insertion loss and crosstalk are better than 2.78 dB and -19.96 dB, respectively. The proposed concept can flexibly handle various fiber configurations without additional complexity.
    Language English
    Publishing date 2023-12-22
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.507445
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Numerical Study on Local Entropy Production Mechanism of a Contra-Rotating Fan.

    Jia, Xingyu / Zhang, Xi

    Entropy (Basel, Switzerland)

    2023  Volume 25, Issue 9

    Abstract: ... to investigate a contra-rotating fan as the research subject. An optimal design for load distribution along ... simulation (SST-DES) technique is constructed to evaluate the loss distribution of the contra-rotating fan ... Contra-rotating fans (CRFs) have garnered significant attention due to their higher power-to-weight ...

    Abstract Contra-rotating fans (CRFs) have garnered significant attention due to their higher power-to-weight ratio compared to traditional fans; however, limited focus has been given to the localization and development of local aerodynamic losses. Furthermore, there is a need for further research on the impact of load distribution along the radius on local entropy production. Therefore, this study aims to investigate a contra-rotating fan as the research subject. An optimal design for load distribution along the radius is achieved by constructing a surrogate model in combination with a genetic algorithm. The effectiveness of this design has been verified through experimentation using a specific test device. In this study, a local entropy production rate (EPR) model adapted to the shear stress transport-detached eddy simulation (SST-DES) technique is constructed to evaluate the loss distribution of the contra-rotating fan. This paper primarily focuses on comparing and analyzing the blade profile and overall performance of the CRFs before and after optimization. The EPR contribution of each interval along the radius is compared to the corresponding blade channel to identify the approximate range of high-EPR regions. Furthermore, an investigation is conducted to examine the distribution of EPR along the streamwise direction in these high-EPR regions. After that, by comparing the development of the flow structure near a stall before and after optimization, combined with the analysis of the EPR contours, the EPR mechanism of this CRF is revealed.
    Language English
    Publishing date 2023-09-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2014734-X
    ISSN 1099-4300 ; 1099-4300
    ISSN (online) 1099-4300
    ISSN 1099-4300
    DOI 10.3390/e25091293
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Genetic algorithm assisted bridge fiber design and fabrication for few-mode multi-core fiber Fan-in/Fan-out device.

    Zhang, Fengming / Liu, Zhuyixiao / Du, Haoze / Shao, Yuanhui / Shen, Lei / Yang, Liubo / Yan, Changkun / Zhao, Zhiyong / Tang, Ming

    Optics express

    2022  Volume 30, Issue 11, Page(s) 19042–19054

    Abstract: ... insertion loss few-mode multi-core fiber Fan-in/Fan-out device. The genetic algorithm is applied to optimize ... we have successfully drew the designed bridge fiber and fabricated the corresponding Fan-in/Fan-out device ...

    Abstract We present a rapid and precise method to design the multiple step-index bridge fiber for ultra-low insertion loss few-mode multi-core fiber Fan-in/Fan-out device. The genetic algorithm is applied to optimize the structural parameters to support multi-mode operation. Based on the proposed intelligent iteration platform, core-based multiplex/demultiplex optimization can be achieved with less than 1.0 dB insertion loss for the first 6 LP modes in space division multiplexing system consisting of few-mode multi-core fibers. Besides, we have successfully drew the designed bridge fiber and fabricated the corresponding Fan-in/Fan-out device. When connecting it with the single-core 6-mode fiber and 7-core 6-mode fiber, the average insertion losses of mode LP01, LP11a, LP11b, LP21a, LP21b, and LP02 are 0.88 dB, 1.11 dB, 1.07 dB, 1.42 dB, 1.33 dB, and 1.04 dB, respectively.
    Language English
    Publishing date 2022-10-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.457374
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Flight and Interaction Control of an Innovative Ducted Fan Aerial Manipulator.

    Zhang, Yibo / Xu, Bin / Xiang, Changle / Fan, Wei / Ai, Tianfu

    Sensors (Basel, Switzerland)

    2020  Volume 20, Issue 11

    Abstract: An innovative aerial manipulator with ducted fans is proposed to achieve side-on aerial ...

    Abstract An innovative aerial manipulator with ducted fans is proposed to achieve side-on aerial manipulation tasks in a confined environment, such as canopy sampling in dense forests. The dynamic model of the novel design is studied, and on this basis a composite controller is proposed to address the challenges of arm extension and physical interaction during the manipulation process. An adaptive controller is proposed for the aerial platform to achieve good stability and tracking performance under the manipulator motion, and an impedance controller is designed for the manipulator to ensure compliance and stability during physical contact. The experimental tests validate the effectiveness of the proposed prototype structure and controller design.
    Language English
    Publishing date 2020-05-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s20113019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Some inequalities for the Fan product of

    Wang, Gang / Wang, Yanan / Zhang, Yuan

    Journal of inequalities and applications

    2018  Volume 2018, Issue 1, Page(s) 257

    Abstract: In this paper, we investigate some inequalities for the Fan product of ...

    Abstract In this paper, we investigate some inequalities for the Fan product of
    Language English
    Publishing date 2018-09-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2028512-7
    ISSN 1029-242X ; 1025-5834
    ISSN (online) 1029-242X
    ISSN 1025-5834
    DOI 10.1186/s13660-018-1853-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Fan-ring interpolation method applied to the panorama unwrapping of the deep-hole parts.

    Feng, Xuan / Jing, Wenbo / Li, Lijie / Zhang, Weiyin / Wang, Shuzhen

    Journal of the Optical Society of America. A, Optics, image science, and vision

    2022  Volume 39, Issue 2, Page(s) 219–226

    Abstract: ... by handing between rectangle and circle to obtain more true images. A fan-ring interpolation based ... from the fan-ring interpolation can provide better quality in subjective and objective evaluation ...

    Abstract Image interpolation is a critical step in panoramic image unwrapping studies. Information calculated in the Cartesian coordinates, although broadly applied, applies to operation between rectangles that will destroy the compressed depth information. The polar coordinates, in contrast, can store depth information by handing between rectangle and circle to obtain more true images. A fan-ring interpolation based on the polar coordinates is proposed for unwrapping panoramic images in this study through replanning the pixel search path in the panorama, and is then supported by redefining third-order interpolation. We validate our method on synthetic and practical images. Compared with competitor models, the unwrapping image obtained from the fan-ring interpolation can provide better quality in subjective and objective evaluation with guaranteed accuracy.
    Language English
    Publishing date 2022-02-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 283633-6
    ISSN 1520-8532 ; 1084-7529 ; 0740-3232
    ISSN (online) 1520-8532
    ISSN 1084-7529 ; 0740-3232
    DOI 10.1364/JOSAA.439814
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 2689: Show issues Location:
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  7. Article ; Online: Evolution of groundwater hydrochemical characteristics and formation mechanism during groundwater recharge: A case study in the Hutuo River alluvial-pluvial fan, North China Plain.

    Wang, Ping / Zhang, Wei / Zhu, Yuchen / Liu, Yaci / Li, Yasong / Cao, Shengwei / Hao, Qichen / Liu, Shenghua / Kong, Xiangke / Han, Zhantao / Li, Binghua

    The Science of the total environment

    2024  Volume 915, Page(s) 170159

    Abstract: ... in the Hutuo River alluvial-pluvial fan in the North China Plain from 2019 to 2021. Hydrochemical, isotopic ...

    Abstract A pilot project for groundwater recharge from rivers is currently being carried out in North China Plain. To investigate the influence of river recharge on groundwater hydrochemical characteristics, dynamic monitoring and analysis of groundwater samples were conducted at a typical recharge site in the Hutuo River alluvial-pluvial fan in the North China Plain from 2019 to 2021. Hydrochemical, isotopic, and multivariate statistical analyses were used to systematically reveal the spatiotemporal variation of groundwater chemistry and its driving factors during groundwater recharge process. The results showed that the groundwater hydrochemical types and characteristics in different recharge areas and recharge periods exhibited obvious spatiotemporal differences. The groundwater type varied from HCO
    Language English
    Publishing date 2024-01-18
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.170159
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
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  8. Article ; Online: Optical fan for single-cell screening.

    Liu, Xiaoshuai / Li, Yuchao / Xu, Xiaohao / Zhang, Yao / Li, Baojun

    Journal of biophotonics

    2019  Volume 13, Issue 1, Page(s) e201900155

    Abstract: ... designed fiber probe with a flat facet, we propose an "optical fan" strategy to screen K562 cells ... The experimental results were interpreted by the numerical simulation, and the stiffness of optical fan was also ...

    Abstract The single-cell screening has attracted great attentions in advanced biomedicine and tissue biology, especially for the early disease diagnosis and treatment monitoring. In this work, by using a specific-designed fiber probe with a flat facet, we propose an "optical fan" strategy to screen K562 cells at the single-cell level from a populations of RBCs. After the 980-nm laser beam injected into the fiber probe, the RBCs were blown away but holding target K562 cells in place. Further, multiple leukemic cells can be screened from hundreds of red blood cells, providing an efficient approach for the cell screening. The experimental results were interpreted by the numerical simulation, and the stiffness of optical fan was also discussed.
    MeSH term(s) Computer Simulation ; Erythrocytes ; Light
    Language English
    Publishing date 2019-08-05
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2390063-5
    ISSN 1864-0648 ; 1864-063X
    ISSN (online) 1864-0648
    ISSN 1864-063X
    DOI 10.1002/jbio.201900155
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 6723: Show issues Location:
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  9. Article ; Online: Cross-sensitivity immune SPR sensor based on fan-shaped microstructured optical fiber for temperature and refractive index sensing.

    Zhang, Wandi / Luan, Nannan

    Optics express

    2023  Volume 31, Issue 17, Page(s) 27161–27170

    Abstract: ... cross-sensitivity problems, we propose a surface plasmon resonance sensor based on a fan-shaped ... microstructured optical fiber (MOF) for the simultaneous sensing of temperature and refractive index (RI). The fan ...

    Abstract To avoid coating and filling into the fiber holes, facilitate the phase-matching and eliminate cross-sensitivity problems, we propose a surface plasmon resonance sensor based on a fan-shaped microstructured optical fiber (MOF) for the simultaneous sensing of temperature and refractive index (RI). The fan-shaped structure is fabricated by polishing two sides of MOF with an angle of 120°. One side is coated with the gold film and polydimethylsiloxane layer for temperature sensing, and the other side is only coated with the gold film for RI sensing. The two sensing sides can support resonance peaks with two polarized directions at the angle of 120°, which are independent without cross-sensitivity. By monitoring the shifts of the two polarized peaks, our numerical results show that the temperature sensitivity is 2.932 nm/°C in the range of 30 °C to 40 °C, and RI sensitivity is 4235 nm/RIU in the range of 1.38 to 1.39, respectively.
    Language English
    Publishing date 2023-09-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.493786
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Effect of the Radial Velocity Distribution on the Loss Generation of a Contra-Rotating Fan in a Ventilation System.

    Jia, Xingyu / Zhang, Xi / Guo, Kui / Li, Xuehui

    Entropy (Basel, Switzerland)

    2023  Volume 25, Issue 3

    Abstract: Quantification of the loss generation of ducted contra-rotating fan (CRF) blades is difficult ...

    Abstract Quantification of the loss generation of ducted contra-rotating fan (CRF) blades is difficult to achieve, since there are no guide vanes between rotors. A blade design program was established to investigate the relationship between radial velocity distribution and incurred loss. Numerical and experimental techniques were used to confirm the optimal configuration's overall performance. The relationship between loss and velocity distribution under the impact of spanwise load distribution was confirmed by the entropy contour from various perspectives. The appropriate radial velocity distribution can improve the operating efficiency of a CRF by reducing the entropy around the annulus under design and near-stall conditions. This regularity could provide some strategies in the design of contra-rotating blades.
    Language English
    Publishing date 2023-03-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2014734-X
    ISSN 1099-4300 ; 1099-4300
    ISSN (online) 1099-4300
    ISSN 1099-4300
    DOI 10.3390/e25030433
    Database MEDical Literature Analysis and Retrieval System OnLINE

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