Article
Chemistry, Physical
Tianqi Zhao, Bo Fang, Wenkang Huang, Jianxun Lu, Yinglai Wu, Changyu Shen, Chenxia Li, Xufeng Jing
Summary: In this paper, we propose an all-dielectric encoded particle metasurface using the Pancharatnam-Berry phase principle for efficient and flexible manipulation of transmitted beams. We also introduce an error analysis theory for rectangular beams and provide a method to achieve standard beam.
SURFACES AND INTERFACES
(2022)
Article
Quantum Science & Technology
Long Chen, Jian Wei You, Ze Gu, Qian Ma, Tie Jun Cui
Summary: This study develops an analog quantum bit based on Pancharatnam-Berry phase metasurfaces. It not only provides a theoretical foundation to go beyond the information limit of classical bits but also develops a feasible physics platform to investigate quantum information science.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Qingrong Deng, Jianing Yang, Xiang Lan, Wenting Zhang, Hengyu Cui, Zhengwei Xie, Ling Li, Yijia Huang
Summary: Pancharatnam-Berry (PB) phase, as one of the main approaches to implement phase gradient in metasurfaces, has attracted enormous interest. The recently proposed generalized PB phase, which indicates that phase gradient could be achieved by high-order symmetry metallic meta atoms, can also be implemented in all-dielectric metasurfaces with higher efficiency. Functional devices are designed by merging generalized PB phase and propagation phase, and a detailed comparison between meta atoms with different rotational symmetries is conducted to illustrate the difference between classical and generalized PB phase.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Liangui Deng, Zile Li, Zhiqiang Guan, Jin Tao, Gongfa Li, Xiaoli Zhu, Qi Dai, Rao Fu, Zhou Zhou, Yan Yang, Shaohua Yu, Guoxing Zheng
Summary: It is shown that a bilayer metasurface can achieve arbitrary complex-amplitude modulation by arranging the orientation angles of nanostructures, increasing the lateral resolution and simplifying the design and fabrication process.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Multidisciplinary
Wenguo Zhu, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen
Summary: This research demonstrates a novel wave-vector-varying PB phase that naturally arises in transmission and reflection processes for paraxial beams with small incident angles. This new photonic spin Hall effect can address the contradiction between spin separation and energy efficiency in the conventional PSHE.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Jianfeng Zhu, Mengze Li, Jiexin Lai, Yang Yang
Summary: This work demonstrates a polarization-maintaining metasurface for spin-decoupled beam shaping using multimaterial additive manufacturing. The wavefronts of LHCP and RHCP can be independently controlled while maintaining the same spin state.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Changqing Li, Zhengyong Song
Summary: In this work, dynamically switchable metasurfaces based on vanadium dioxide are presented, achieving state switching of reflected wavefront for circularly polarized wave in the terahertz band. Phase modulation is achieved by rotating the vanadium dioxide strip, and the phase transition between metallic and insulating states enables the design of applications such as gradient metasurfaces, vortex beam generators, and reflective lenses with switchable focusing function.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Ling Wang, Yang Yang, Feng Gao, Shuhua Teng, Jinggui Zhang, Li Deng, Weijun Hong, Zhuofang Li
Summary: This paper presents a strategy of using polarization-insensitive unit cells to manipulate incident waves with arbitrary circularly polarized and linearly polarized states. The proposed method is significant for designing microwave-transmissive metasurfaces capable of polarization insensitivity.
Article
Materials Science, Multidisciplinary
Ziying Zhang, Xueqian Zhang, Yuehong Xu, Xieyu Chen, Xi Feng, Meng Liu, Quan Xu, Ming Kang, Jiaguang Han, Weili Zhang
Summary: This study demonstrates a chiral-selective metasurface absorber using a single-layer free-standing metasurface and coherent control method, actively tuning the strength of chiral-selective behavior by changing the phase difference between two coherent inputs. It achieves near unity absorption for one circularly polarized incidence and high-efficiency cross-polarization conversion for the other circularly polarized incidence. This approach enriches functionalities and improves the performance of conventional single-layer metasurfaces, with potential applications in various practical cases.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Physical
Jinhao Xin, Zhiqiang Du, Zekai Zhou, Zhengyong Song
Summary: This paper presents three plasmonic metasurfaces, which implement multiple functions including normal reflection, focused beam, anomalous reflection, and computational focusing, on a single plasmonic metasurface. By fine-tuning the geometric dimensions and orientation angle of the meta-atom, the geometric phase is combined with the propagation phase to produce an independent phase response, providing novel approaches for the integration of multifunctional EM modulation.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Ruirui Zhang, Manna Gu, Rui Sun, Xiangyu Zeng, Yuqin Zhang, Yu Zhang, Chen Cheng, Zijun Zhan, Chao Chen, Xiaorong Ren, Changwei He, Chunxiang Liu, Chuanfu Cheng
Summary: By manipulating two spin components in metasurfaces, independent wavefield control in primary and converted spin channels is achieved, providing higher optical freedom.
Article
Engineering, Electrical & Electronic
Feng Zhao, Jiashuai Xu, Zhengyong Song
Summary: This paper utilizes graphene-based Pancharatnam-Berry metasurfaces to achieve beam steering in the terahertz band, designing metasurfaces that can generate multiple beams in space.
IEEE PHOTONICS JOURNAL
(2022)
Article
Physics, Multidisciplinary
Ze-Guo Chen, Ruo-Yang Zhang, C. T. Chan, Guancong Ma
Summary: This study demonstrates the realization of non-Abelian braiding of multiple degenerate acoustic waveguide modes, exploring the dynamics and geometric phase variations. By switching the order of different braiding processes, the non-Abelian characteristics are revealed.
Article
Nanoscience & Nanotechnology
Weikang Pan, Zhuo Wang, Yizhen Chen, Shiqing Li, Xiaoying Zheng, Xinzhang Tian, Cong Chen, Nianxi Xu, Qiong He, Lei Zhou, Shulin Sun
Summary: A new strategy is proposed to efficiently generate arbitrary spin-polarized scattering far-field patterns from surface-wave (SW) excitations on a designer Pancharatnam-Berry (PB) metasurface. PB meta-atoms serve as subwavelength scatter to decouple impinging SW to spin-polarized propagating waves (PW), and interference among PWs generated by scatterings at different PB meta-atoms can generate tailored far-field patterns. Designed PB metasurfaces in the microwave regime can generate desired radiation patterns within a broad frequency band, including unidirectional radiation, line/point focusing, vortex beam, and hologram.
Article
Materials Science, Multidisciplinary
Ling-Jun Yang, Sheng Sun, Wei E. I. Sha
Summary: Inspired by the envelope-modulation theory, a novel and universal method for manipulating the OAM spectrum in wide bandwidth is proposed using shape-tailored metasurfaces. This approach successfully demonstrates the generation of broadband-modulated OAM spectra and comb-like OAM spectra, showing potential for advancing OAM-based applications.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Cuo Wu, Shailesh Kumar, Danylo Komisar, Chao Meng, Yadong Deng, Zhiming Wang, Sergey Bozhevolnyi, Fei Ding
Summary: Hybrid plasmonic nanocircuits allow efficient coupling and routing of single photons generated by quantum emitters, while also providing control over the polarization of the photons. This study proposes and demonstrates a QE-driven hybrid plasmonic nanocircuit that uses ultracompact polarization out-couplers to generate versatile polarized photons.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Cuo Wu, Shailesh Kumar, Yinhui Kan, Danylo Komisar, Zhiming Wang, Sergey Bozhevolnyi, Fei Ding
Summary: We demonstrate a room-temperature on-chip integrated OAM source that emits well-collimated single photons carrying entangled spin and OAM states. Our research bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.
Article
Materials Science, Multidisciplinary
Yingcheng Qiu, Shan Zhang, Guanglin Zhang, Zhengyi He, Xiaoqiang Feng, Fei Ding, Shiwei Tang, Gang Wang
Summary: By growing a bottom 2D graphene directly on a Ge substrate and synthesizing a middle 3D graphene in-situ using 2D graphene as the buffer layer, and transferring a top 2D graphene to form a vertical 2D/3D/2D graphene sandwich structure on the Ge substrate, the light absorption and photodetection performance can be improved.
DIAMOND AND RELATED MATERIALS
(2022)
Correction
Chemistry, Multidisciplinary
Tong Cai, Bin Zheng, Jing Lou, Lian Shen, Yihao Yang, Shiwei Tang, Erping Li, Chao Qian, Hongsheng Chen
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Soren Im Sande, Sergey I. Bozhevolnyi, Fei Ding
Summary: In this work, single-celled metasurfaces are designed and experimentally demonstrated to achieve broadband and spin-multiplexed holograms. The phase modulation relies on the geometric phase provided by a high-performance nanoscale half-wave plate operating in reflection. Four different multiplexing strategies are implemented and systematically assessed in terms of background levels, image fidelities, hologram efficiencies, and polarization conversion ratios.
Article
Optics
Dengpan Wang, Guangming Wang, Shiwei Tang, Tong Cai
Summary: A bi-layer anisotropic Huygens' metasurface is proposed to design ultra-compact bifunctional transparent meta-devices based on the polarization dependent property. A bifunctional transparent meta-device is designed, fabricated and experimentally demonstrated, behaving as a beam deflector and a focusing lens under different polarized incident waves. The measured total efficiency of the beam deflector is about 64% at 10 GHz and the measured relative efficiency of the focusing lens achieves about 80%.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Ziru Cai, Yingtao Ding, Zhiming Chen, Ziwei Zheng, Fei Ding
Summary: Optical metasurfaces have the potential to revolutionize wave plates with their compact size and diverse functionalities. However, most metasurface wave plates are passive and lack dynamic capabilities. In this study, we propose a dynamic dual-functional meta-wave plate based on Sb2Se3 meta-molecules, which enables reconfigurable polarization conversion. Comprehensive simulations are performed to verify the phase change process. This design opens up new possibilities for integrated adaptive photonics with dynamic and multiplexed functionalities.
Article
Chemistry, Physical
Pengfei Zhao, Xinyi Ding, Chuang Li, Shiwei Tang
Summary: In this paper, a tunable metasurface based on a simple metal-insulator-metal structure is proposed, which can be realized by the mutual transformation of insulating and metallic states of vanadium dioxide (VO2). The metasurface can achieve functional switching of photonic spin Hall effect (PSHE), absorption and beam deflection. Our design only consists of one layer of artificial structure with two materials and is easy to realize in the experiment, providing new ideas for the research of tunable multifunctional metasurface.
Article
Nanoscience & Nanotechnology
Lili Gui, Chuanshuo Wang, Fei Ding, Hao Chen, Xiaosheng Xiao, Sergey I. Bozhevolnyi, Xiaoguang Zhang, Kun Xu
Summary: In this study, a wavelength-tunable vortex fiber laser assisted by a metasurface is proposed and demonstrated. The laser can directly generate orbital angular momentum (OAM) beams with customizable topological charges. By combining a broadband gap-surface plasmon metasurface and an intracavity tunable filter, the laser's center wavelength can be continuously tuned from 1015 nm to 1075 nm, which is nearly twice the range of other reported vortex fiber lasers.
Article
Materials Science, Multidisciplinary
Anisha Chirumamilla, Ioana-Malina Moise, Ziru Cai, Fei Ding, Karina B. Jensen, Deyong Wang, Peter K. Kristensen, Lars R. Jensen, Peter Fojan, Vladimir Popok, Manohar Chirumamilla, Kjeld Pedersen
Summary: Surface-enhanced Raman spectroscopy (SERS) is used to detect analyte molecules at ultra-low concentrations using efficient plasmonic nanostructures. However, large-scale fabrication of such nanostructures with electromagnetic field enhancement remains challenging. This work presents a one-step rapid fabrication technique to grow 3D nanopillars of Ag or Au, which can reliably detect analyte molecules at concentrations as low as 10^-18 M. The technique utilizes localized surface plasmons and surface plasmons at the metal/air interface for high enhancement and is evaluated using a portable handheld Raman spectrometer for potential on-site diagnostics.
APPLIED MATERIALS TODAY
(2023)
Article
Optics
Tianqi Liu, Qiang Fu, Yuanzhe Li, Xu Han, Shixuan Wang, Takashi Taniguchi, Kenji Watanabe, Dongyang Wan, Qi Zhang, Yingbo Zhao, Zhenhua Ni, Fei Ding, Zhenliang Hu, Xueyong Yuan, Junpen Lu
Summary: In this study, the brightness of WS2-based LEDs is enhanced by introducing self-assembled silver nanoparticles (NPs) on top of the LED. With the assistance of effective transient-mode charge injection, a 2.9-fold electroluminescence (EL) enhancement is observed in the experiment. Full-wave simulations confirm that the improvement comes from the scattering capability of silver NPs.
Article
Energy & Fuels
Anisha Chirumamilla, Fei Ding, Yuanqing Yang, Murugan Senthil Mani Rajan, Sergey I. Bozhevolnyi, Duncan S. Sutherland, Kjeld Pedersen, Manohar Chirumamilla
Summary: In this study, a simple large-area nanofabrication method was proposed to create tungsten nanodisc spectrally-selective emitters with high emissivity and thermal stability. The method showed invariance to changes in polarization and incidence angles. This research is significant in advancing the implementation of photonic/plasmonic thermal emitters in high-temperature stable and efficient thermal energy harvesting systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Optics
Chuang Li, Shiwei Tang, Ziwei Zheng, Fei Ding
Summary: The use of multifunctional metasurfaces is revolutionizing conventional electromagnetic devices, with their unprecedented capabilities and low losses. The attention has been drawn towards geometric metasurfaces that use single-celled elements to modulate the phase of circularly polarized waves. However, the opposite signs of geometric phase for two spins have limited its functionality. Moreover, the current geometric metasurfaces operate at a single wavelength in either transmission or reflection modes. To overcome these limitations, a double-layered metasurface composed of complementary elliptical and reversal ring resonator structures is proposed for simultaneous and independent control of reflected and transmitted circularly polarized waves at two terahertz frequencies, offering advanced functionalities.
CHINESE OPTICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Shiwei Tang, Yikai Xu, Fei Ding, Feng Liu
Summary: Topological defects in solid-state materials, such as dislocations and disclinations, can trap anomalous states associated with nontrivial momentum-space topology due to their unique real-space topology. The Burgers vector B is used to characterize the real-space topology of these defects, which can be tunable in a dielectric photonic crystal. This tunability allows for proper control and reversal of the helicity of topological interfacial states, leading to the proposal of a tunable topological optical switch. This research provides insights into the interplay between real and reciprocal space topologies and offers a practical approach for implementing scalable and tunable topological waveguides in dielectric photonic crystals.
