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  1. No Access

    Article

    Deep Learning Radiomics Nomogram Based on Multiphase Computed Tomography for Predicting Axillary Lymph Node Metastasis in Breast Cancer

    This study aims to develop and validate a deep learning radiomics nomogram (DLRN) for prediction of axillary lymph node metastasis (ALNM) in breast cancer patients.

    Jieqiu Zhang, Wei Yin, Lu Yang, **aopeng Yao in Molecular Imaging and Biology (2024)

  2. Article

    Open Access

    Development and validation of a radiopathomic model for predicting pathologic complete response to neoadjuvant chemotherapy in breast cancer patients

    Neoadjuvant chemotherapy (NAC) has become the standard therapeutic option for early high-risk and locally advanced breast cancer. However, response rates to NAC vary between patients, causing delays in treatme...

    Jieqiu Zhang, Qi Wu, Wei Yin, Lu Yang, Bo **ao, Jianmei Wang, **aopeng Yao in BMC Cancer (2023)

  3. No Access

    Article

    Tailoring circular dichroism via the Born-Kuhn model for meta-holograms

    Chirality, as one of the ubiquitous properties in nature, has aroused striking attention in the fields of physics and materials sciences. For tailoring of light with more degree of freedom, circular dichroism ...

    He Wang, Hongqiang Zhou, Tianhao Li, Zhe Qin in Science China Physics, Mechanics & Astrono… (2022)

  4. Article

    Open Access

    Metasurface with dynamic chiral meta-atoms for spin multiplexing hologram and low observable reflection

    Spin light manipulation based on chiral metasurfaces is a striking hotspot that has intrigued huge attention. Circular dichroism, a unique phenomenon of chiral atoms/molecules, has been regarded as another aux...

    He Wang, Zhe Qin, Lingling Huang, Yongfeng Li, Ruizhe Zhao, Hongqiang Zhou in PhotoniX (2022)

  5. No Access

    Article

    Synergy of absorbing and diffusing for RCS reduction using spin-selective coding metasurfaces

    It is well known that the mainly strategy for Radar Cross Section (RCS) reduction is absorbing, beam deflecting or diffusing. A lot of research has been conducted on RCS reduction basing on one or multiple mec...

    Yang Cheng, Yongfeng Li, He Wang, Qiqi Zheng, Jiafu Wang, Lin Zheng in Applied Physics A (2021)

  6. No Access

    Article

    A hybrid encoding method for frequency selective surface optimization design with angular stability property

    In this letter, a hybrid encoding method of topology optimization for frequency selective surface (FSS) with high angular stability is proposed. By combining two different encoding method of binary and real-nu...

    Sai Sui, Hua Ma, Jiafu Wang, Mingbao Yan, Jieqiu Zhang, Shaobo Qu in Applied Physics A (2019)

  7. Article

    Open Access

    Achieving circular-to-linear polarization conversion and beam deflection simultaneously using anisotropic coding metasurfaces

    An anisotropic coding metasurface (CM) is proposed for achieving circular-to-linear polarization conversion and beam deflection. Different phase coding consequences were independently achieved for two orthogon...

    Yao **g, Yongfeng Li, Jieqiu Zhang, Jiafu Wang, Maochang Feng in Scientific Reports (2019)

  8. No Access

    Article

    Efficient orbital angular momentum vortex beam generation by generalized coding metasurface

    A method to efficiently generate orbital angular momentum (OAM) vortex beam is proposed by introducing generalized coding metasurface (CM). Firstly, a linearly polarized (LP) cross-polarization transmission un...

    Qiqi Zheng, Yongfeng Li, Yajuan Han, Maochang Feng, Yongqiang Pang in Applied Physics A (2019)

  9. No Access

    Article

    Ultra-wideband and high-efficiency transparent coding metasurface

    In this paper, we propose a new way to control the transparent far-field beam by varying coded sequence combinations based on transparent coding metasurface. As an example, an ultra-wideband and high-efficienc...

    Maochang Feng, Yongfeng Li, Jiafu Wang, Qiqi Zheng, Sai Sui, Chao Wang in Applied Physics A (2018)

  10. Article

    Open Access

    Thermally Tunable Ultra-wideband Metamaterial Absorbers based on Three-dimensional Water-substrate construction

    Distilled water has frequency dispersive characteristic and high value of imaginary part in permittivity, which can be seen as a good candidate of broadband metamaterial absorbers(MAs) in microwave. Here, an i...

    Yang Shen, Jieqiu Zhang, Yongqiang Pang, Lin Zheng, Jiafu Wang in Scientific Reports (2018)

  11. No Access

    Article

    Broadband reflectionless metamaterials with customizable absorption–transmission-integrated performance

    Broadband reflectionless metamaterials with customizable absorption–transmission-integrated performance are proposed, discussed, and demonstrated in this paper. The three-dimensional metamaterial absorbers (MA...

    Yang Shen, Jieqiu Zhang, Yongqiang Pang, Yongfeng Li, QiQi Zheng in Applied Physics A (2017)

  12. Article

    Open Access

    Wideband, wide-angle coding phase gradient metasurfaces based on Pancharatnam-Berry phase

    A new concept of the coding phase gradient metasurface (CPGM) is proposed, which is constructed using the phase gradient metasurface as the coding elements. Different from the previous coding metasurface (CM),...

    Qiqi Zheng, Yongfeng Li, Jieqiu Zhang, Hua Ma, Jiafu Wang in Scientific Reports (2017)

  13. Article

    Open Access

    High-efficiency tri-band quasi-continuous phase gradient metamaterials based on spoof surface plasmon polaritons

    A high-efficiency tri-band quasi-continuous phase gradient metamaterial is designed and demonstrated based on spoof surface plasmon polaritons (SSPPs). High-efficiency polarizaiton conversion transmission is f...

    Yongfeng Li, Hua Ma, Jiafu Wang, Yongqiang Pang, Qiqi Zheng in Scientific Reports (2017)

  14. Article

    Open Access

    Microwave birefringent metamaterials for polarization conversion based on spoof surface plasmon polariton modes

    We propose the design of wideband birefringent metamaterials based on spoof surface plasmon polaritons (SSPPs). Spatial k-dispersion design of SSPP modes in metamaterials is adopted to achieve high-efficiency tra...

    Yongfeng Li, Jieqiu Zhang, Hua Ma, Jiafu Wang, Yongqiang Pang in Scientific Reports (2016)

  15. No Access

    Article

    Wideband, co-polarization anomalous reflection metasurface based on low-Q resonators

    Wideband anomalous reflection using metasurface is usually accompanied by polarization conversion, which changes the polarization state of reflected waves. In this paper, we propose to realize wideband, co-pol...

    Yongfeng Li, Jieqiu Zhang, Yaodong Zhang, Hongya Chen, Ya Fan in Applied Physics A (2016)

  16. Article

    Open Access

    Reconfigurable all-dielectric metamaterial frequency selective surface based on high-permittivity ceramics

    Based on effective medium theory and dielectric resonator theory, we propose the design of reconfigurable all-dielectric metamaterial frequency selective surfaces (FSSs) using high-permittivity ceramics. The F...

    Liyang Li, Jun Wang, Jiafu Wang, Hua Ma, Hongliang Du, Jieqiu Zhang in Scientific Reports (2016)

  17. No Access

    Article

    Two-dimensional QR-coded metamaterial absorber

    In this paper, the design of metamaterial absorbers is proposed based on QR coding and topology optimization. Such absorbers look like QR codes and can be recognized by decoding softwares as well as mobile ph...

    Sai Sui, Hua Ma, Jiafu Wang, Yongqiang Pang, Jieqiu Zhang, Shaobo Qu in Applied Physics A (2015)

  18. No Access

    Article

    Generation of stable bright pulse and the dark soliton interaction in nonlinear left-handed materials

    In homogeneous and isotropic nonlinear left-handed materials (LHMs), using the split step Fourier transform method, we demonstrate that two dark electromagnetic solitons which are the solutions of coupled nonl...

    Dongqi Yang, Jieqiu Zhang, Jianqi Zhang, Biwu Chen, Jiafu Wang in Applied Physics A (2012)

  19. No Access

    Article

    A new family of windows — convolution windows and their applications

    A new family of windows is constructed by convolutions via a few rectangular windows with same time width and is thus referred to as convolution windows. The expressions of the second-order up to the eighth-order...

    Jieqiu Zhang, Changhong Liang, Yanpu Chen in Science in China Ser. E Engineering & Mate… (2005)