Review
Chemistry, Multidisciplinary
Jun Guan, Jeong-Eun Park, Shikai Deng, Max J. H. Tan, Jingtian Hu, Teri W. Odom
Summary: This review discusses the integration of plasmonic and dielectric metasurfaces with emissive or stimuli-responsive materials, enabling control of light-matter interactions at the nanoscale. Metasurfaces offer the ability to manipulate electromagnetic waves at the subwavelength level, while the combination with nanoscale emitters allows for enhanced photoluminescence, nanoscale lasing, controlled quantum emission, and formation of exciton-polaritons. Additionally, the use of functional materials that respond to external stimuli enables the engineering of tunable nanophotonic devices. Emerging metasurface designs, such as surface-functionalized, chemically tunable, and multilayer hybrid metasurfaces, hold promise for various applications including photocatalysis, sensing, displays, and quantum information.
Article
Physics, Multidisciplinary
Wilton J. M. Kort-Kamp, Abul K. Azad, Diego A. R. Dalvit
Summary: Space-time quantum metasurfaces provide a compact platform for manipulating quantum light, allowing continuous tuning of coherent light-matter interactions in space and time. They enable arbitrary control of the spectral, spatial, and spin properties of nonclassical light, leading to tailored entanglement of single photon degrees of freedom and generation of steered and vortex photon pairs. These metasurfaces have the potential to enable novel photonic functionalities, such as encoding quantum information into high-dimensional color qudits and generating reconfigurable hyperentanglement for high-capacity quantum communications.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Chen Xi Huang, Jingjing Zhang, Qiang Cheng, Tie Jun Cui
Summary: Polarization modulation (PoM) offers additional freedom for carrier wave modulation and enhances physical-layer security in wireless communication. A prototype of PoM wireless communications based on a digital coding metasurface has been demonstrated, showing potential for simplified multichannel communications and increased flexibility in antenna operation.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Bohan Li, Rocio Camacho-Morales, Neuton Li, Andrea Tognazzi, Marco Gandolfi, Domenico de Ceglia, Costantino De Angelis, Andrey A. Sukhorukov, Dragomir N. Neshev
Summary: By optimizing the nanostructured VO2 material, researchers have successfully improved its light transmission modulation to 0.73, which is twice the previous achieved modulation value. This research provides new opportunities for the application of VO2 materials.
PHOTONICS RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Isaac O. Oguntoye, Siddharth Padmanabha, Max Hinkle, Thalia Koutsougeras, Adam J. Ollanik, Matthew D. Escarra
Summary: Efficient and dynamic light manipulation at small scale can be achieved through active optical metasurfaces, which offer compact design and low power consumption. In this study, a dynamically tunable metasurface based on vanadium dioxide is demonstrated, allowing independent control of amplitude and phase without mechanical parts. The nanofabrication of vanadium dioxide enables computationally predicted continuously tuned amplitude and phase modulation. Experimental results show stable intermediate states and repeated modulation without degradation, indicating the potential for reprogrammable optical functionality.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Christopher Damgaard-Carstensen, Sergey I. Bozhevolnyi
Summary: In this work, electro-optically controlled optical metasurfaces for reflection modulation are demonstrated. By identifying a suitable low-loss waveguide mode and exploiting its resonant excitation, the modulation of reflected light power with superior characteristics is achieved compared to previous research. The electro-optic Pockels effect in a 300 nm-thick lithium niobate (LN) film is utilized to realize fast and efficient light modulation.
Article
Chemistry, Multidisciplinary
Wei Zhu, Yuancheng Fan, Ruisheng Yang, Guangzhou Geng, Quanhong Fu, Changzhi Gu, Junjie Li, Fuli Zhang
Summary: This article demonstrates silicon-based metasurfaces capable of generating versatile wavefronts under different polarization light incidence at visible wavelengths, with great potential for applications in integrated functional optical devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yue Li, Jianliang Xie, Longjiang Deng, Bo Peng
Summary: Dynamic properties are essential in modern optical devices, and active metasurfaces provide a promising approach for miniaturizing and integrating dynamic optical systems. Phase transition materials, with their high refractive index and simple control characteristics, are ideal candidates for designing active metasurfaces. In this study, we demonstrate a tunable metalens and switchable image coding metasurface in the near-infrared region by controlling the phase transition of vanadium oxide. This work opens up possibilities for active metasurfaces in imaging and encryption systems.
SCIENCE CHINA-MATERIALS
(2023)
Article
Optics
Hui Li, Jie Li, Chenglong Zheng, Hang Xu, Peng Li, Chunyu Song, Fan Yang, Jitao Li, Zhen Yue, Yating Zhang, Wei Shi, Jianquan Yao, Shouxin Duan, Yun Shen
Summary: Metasurfaces are artificially designed structures that can efficiently manipulate incident waves, and have recently gained attention in terahertz radiation for their ability to overcome the complexity of bulky optical systems. In this study, we demonstrate different designs of all-silicon terahertz metasurfaces for various applications. By combining geometric and propagation phases, we achieve switchable multiple phase modulation in orthogonal circularly polarized channels. The proposed scheme allows for locked phase modulation profiles and flexible manipulation of wavefronts.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hyeongju Chung, Inyong Hwang, Jaeyeon Yu, Gerhard Boehm, Mikhail A. Belkin, Jongwon Lee
Summary: Electrically reconfigurable metasurfaces based on the polaritonic coupling and electromagnetic modes enable the electrical control of the polarization state and wavefront of the reflected wave, opening new avenues for functional flat optics. The proposed electrically tunable metasurfaces can easily tune the operating wavelength and function at relatively low voltages, which will enable various applications in the mid-infrared region.
Article
Nanoscience & Nanotechnology
Chenglong Zheng, Jie Li, Guocui Wang, Jingyu Liu, Jitao Li, Zhen Yue, Hongliang Zhao, Xuanruo Hao, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: The study introduces a silicon bifunctional metasurface capable of independent amplitude and phase modulation in two circular polarized channels, demonstrating versatility and flexibility with results consistent with theoretical expectations. The proposed method has applications in dynamic holography, dynamic display, and other fields.
Article
Optics
Elena Mikheeva, Remi Colom, Karim Achouri, Adam Overvig, Felix Binkowski, Jean-yves Duboz, Sgbastien Cueff, Shanhui Fan, Sven Burger, Andrea Alu, Patrice Genevet
Summary: In this paper, we use temporal coupled mode theory to predict the location of phase singularities and control the induced phase modulation of light in wavefront-shaping devices. The study shows that breaking spatial inversion symmetry lifts the degeneracy of reflection zeros and introduces a complex singularity with a positive imaginary part. Our work establishes a general framework for predicting and studying the response of resonant systems in photonics and metaoptics.
Article
Nanoscience & Nanotechnology
Hooman Barati Sedeh, Hediyeh Mohammadi Dinani, Hossein Mosallaei
Summary: This paper demonstrates the possibility of achieving nonreciprocal responses in the near-infrared regime using a combination of time-modulated metasurfaces and static high-Q metasurgeries. The effects of operating wavelength and modulation frequency on power isolation level are investigated, with results showing that the isolation level can reach -30 dB.
Article
Automation & Control Systems
Xiaoyue Zhu, Chao Qian, Yuetian Jia, Jieting Chen, Yuan Fang, Zhixiang Fan, Jie Zhang, Dongdong Li, Reza Abdi-Ghaleh, Hongsheng Chen
Summary: Advanced wireless communication is achieved through index modulation with intelligent spatiotemporal metasurfaces, providing a simple and versatile platform for additional data transmission. The experimental demonstration shows the feasibility and potential for future smart cities.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Nanoscience & Nanotechnology
Sajjad Taravati, George Eleftheriades
Summary: This paper discusses the unique functionalities of microwave space-time-modulated metasurfaces, including spatiotemporal decomposition, digital coding, and nonreciprocal transmission, which far exceed the capabilities of traditional metasurfaces.