Article
Nanoscience & Nanotechnology
Agostino Di Francescantonio, Attilio Zilli, Davide Rocco, Laure Coudrat, Fabrizio Conti, Paolo Biagioni, Lamberto Duo, Aristide Lemaitre, Costantino De Angelis, Giuseppe Leo, Marco Finazzi, Michele Celebrano
Summary: By utilizing a nonlinear periodic metasurface, we have demonstrated all-optical routing of telecom photons upconverted to the visible range. This was achieved through the interference between two frequency-degenerate upconversion processes, namely third-harmonic and sum-frequency generation, controlled by tuning the relative phase and polarization between the pump beams. This technique allows for the modulation of the upconverted signal among the diffraction orders of the metasurface with high efficiency.
NATURE NANOTECHNOLOGY
(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
Multidisciplinary Sciences
Hyounghan Kwon, Tianzhe Zheng, Andrei Faraon
Summary: This study proposes nano-electromechanically tunable asymmetric dielectric metasurfaces as a platform for reflective SLMs. By utilizing the strong asymmetric radiation of perturbed high-order Mie resonances, the metasurfaces achieve large phase tuning, high reflection, and a wavelength-scale pixel size. Electrical control of diffraction patterns is also achieved by displacing the Mie resonators using nano-electro-mechanical forces.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Ivan Shutsko, Maximilian Buchmueller, Maik Meudt, Patrick Goerrn
Summary: Disordered hyperuniformity (DHU) is a significant manifestation of engineered disorder aiming to overcome limitations related to order. A novel and facile method for the fabrication of DHU metasurfaces is proposed, which allows for in-situ control of the k-space by illuminating the growing metasurface with light. The experimental confirmation of anisotropic stealthy DHU is achieved through light-controlled growth.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Tian Dong, Shaoxian Li, Manukumara Manjappa, Peidi Yang, Jiangping Zhou, Deyin Kong, Baogang Quan, Xieyu Chen, Chen Ouyang, Fei Dai, Jiaguang Han, Chunmei Ouyang, Xueqian Zhang, Junjie Li, Yang Li, Jungang Miao, Yutong Li, Li Wang, Ranjan Singh, Weili Zhang, Xiaojun Wu
Summary: The article demonstrates a nonlinear tera-nano metasurface that exhibits extremely large THz nonlinearity and sensitive self-modulation of resonances at moderate incident THz field strengths. The metasurface achieves a record deep-subwavelength confinement of strongly enhanced THz field in a nano-gap, showcasing remarkable THz field-tailored nonlinearity. These results enable a novel platform for enhanced nonlinear nano/micro composites for field-sensitive extreme THz nonlinear applications without the need for intense THz light sources.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ziyi Tang, Ling Li, Haochen Zhang, Jianing Yang, Jie Hu, Xuehua Lu, Yongqiang Hu, Song Qi, Ke Liu, Mingyang Tian, Jinjin Jin, Zuojun Zhang, He Lin, Yijia Huang
Summary: This study proposes a dual-frequency multifunctional Janus metasurface design method, which can simultaneously control the amplitude, phase, and polarization of electromagnetic waves. By breaking the symmetry, different functionalities are achieved in opposite propagation directions. Numerical simulations and experimental validations demonstrate the application of this metasurface in beam deflection and lens design.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Geng-Bo Wu, Shu-Yan Zhu, Stella W. Pang, Chi Hou Chan
Summary: This study proposes a waveguide-integrated superheterodyne metasurface architecture capable of converting guided modes into desired free-space modes, enabling complex light manipulation. It combines radio communications and photonics, providing a paradigm shift in metasurface designs and empowering integrated photonic devices with extraordinary free-space interactivity capability.
Article
Physics, Applied
Radoslaw Kolkowski, Tommi K. Hakala, Andriy Shevchenko, Mikko J. Huttunen
Summary: Optical metasurfaces have revolutionized light manipulation and opened up new opportunities in optics and photonics. Nonlocal metasurfaces, which utilize collective responses of nanoscale building blocks, show great potential in enhancing and controlling nonlinear optical phenomena. This article provides an overview of the principles and functionality of nonlocal metasurfaces, covering multiple scattering, radiation damping, quality factor, local-field enhancement, and temporal dynamics. Computational examples illustrate important aspects, and prospects for future research are discussed.
APPLIED PHYSICS LETTERS
(2023)
Review
Optics
Polina Vabishchevich, Yuri Kivshar
Summary: Nonlinear optics is well-established in studying the interaction between light and macroscopic nonlinear media, but the emerging field of optical metasurfaces provides a new platform for investigating nonlinear phenomena in planar geometries. Nonlinear optical metasurfaces introduce new functionalities to nonlinear optics by utilizing mode-matching, resonances, and relaxed phase-matching conditions. This review highlights recent advances in nonlinear metasurface photonics, including multi-frequency and cascading effects, asymmetric and chiral frequency conversion, nonperturbative nonlinear regimes, and nonlinear quantum photonics, enabled by the physics of Mie resonances and optical bound states in the continuum.
PHOTONICS RESEARCH
(2023)
Review
Physics, Multidisciplinary
Shuhang Qian, Kai Wang, Jiaxing Yang, Chao Guan, Hua Long, Peixiang Lu
Summary: This article comprehensively reviews the recent advances in hybrid nonlinear metasurfaces for light-field modulation. It discusses the advantages of hybrid systems in multifunctional light-field modulation, valleytronic modulation, and quantum technologies. The remaining challenges and future developments of hybrid metasurfaces are also summarized and prospected.
Article
Physics, Multidisciplinary
Kai Guo, Xiaoyu Li, Qianlong Kang, Zhongyi Guo
Summary: This paper proposes a double-layer dielectric metasurface based on phase change material, which can manipulate the light field in full space in the mid-infrared bands and dynamically control the focal intensity of reflected and transmitted light.
Article
Engineering, Electrical & Electronic
Constantinos Valagiannopoulos
Summary: Multistability is a key effect in memory components of various electronic, chemical, biological, and quantum systems, enabling different outputs based on past input values. We discovered that two electromagnetic metasurfaces with nonlinear Kerr-type admittances exhibit significant multistability in transmissivity. This feature arises from the discontinuous response caused by the change in material nature from dielectric to plasmonic and vice versa at different levels of input power.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Optics
Ahmed Mekawy, Dimitrios L. Sounas, Andrea Alu
Summary: This study explores the use of optical nonlinearities to break reciprocity in free-space propagation with a metasurface embedding Kerr nonlinearities. The designed devices demonstrate advantages in transmission ratio, operational bandwidth, and insertion loss.
Article
Nanoscience & Nanotechnology
Elena Mikheeva, Christina Kyrou, Fouad Bentata, Samira Khadir, Sebastien Cueff, Patrice Genevet
Summary: In this Perspective, the authors discuss the opportunities offered by time-modulated metasurfaces for dynamic wavefront engineering and space-time photonics. The authors examine the current state of the art in active metasurfaces and provide a clear vision of the latest developments and limitations. They also discuss the readiness of each technological approach for short- and long-term application perspectives. The authors conclude by discussing the prospects for spatiotemporal metasurface modulation and its potential for unlimited wavefront engineering capabilities.
Article
Physics, Applied
Yuxin Zhai, Hyung-Suk Kwon, Bogdan-Ioan Popa
Summary: This research introduces a method to design omnidirectional and broadband anomalous acoustic reflectors using nonresonant active scatterers, which can manipulate wave-vector components in a broadband manner for arbitrary sound directions. Experimental results show that active scatterers can change the metasurface geometry while preserving the device's functionality.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Multidisciplinary
Yeon Ui Lee, Shilong Li, Steven Edward Bopp, Junxiang Zhao, Zhaoyu Nie, Clara Posner, Sui Yang, Xiang Zhang, Jin Zhang, Zhaowei Liu
Summary: The use of organic hyperbolic materials (OHMs) has demonstrated an optical platform for achieving unprecedented fluorophore photostability without the need for any chemical specificity. This new platform, with its low-loss hyperbolic dispersion and large Purcell effect in the visible spectral range, may open up opportunities in nanophotonics and organic plasmonics for super-resolution imaging and engineering light-matter interactions at the nanoscale.
ADVANCED MATERIALS
(2021)
Article
Optics
Quanwei Li, Wei Bao, Zhaoyu Nie, Yang Xia, Yahui Xue, Yuan Wang, Sui Yang, Xiang Zhang
Summary: This paper proposes and experimentally demonstrates a new degree of freedom in optical quantum interference enabled by a non-unitary metasurface. By creating an anisotropic phase response, two extreme eigen-operations are achieved, allowing for dynamic and continuous control over the effective interaction of two single photons, beyond their intrinsic bosonic nature. This quantum operation provides opportunities for fundamental quantum light-matter interaction and innovative photonic quantum devices for various applications in quantum technologies.
Article
Chemistry, Physical
Xiaoze Liu, Jun Yi, Sui Yang, Erh-Chen Lin, Yue-Jiao Zhang, Peiyao Zhang, Jian-Feng Li, Yuan Wang, Yi-Hsien Lee, Zhong-Qun Tian, Xiang Zhang
Summary: Nonlinear phonon scattering in monolayer MoS2 strongly coupled to a plasmonic cavity mode has been demonstrated, showing enhanced valley polarization and sustained coherence in the stimulated regime. This suggests the potential of valley-cavity-based systems for various applications in cavity quantum electrodynamics.
Article
Multidisciplinary Sciences
Yahui Xue, Yang Xia, Sui Yang, Yousif Alsaid, King Yan Fong, Yuan Wang, Xiang Zhang
Summary: A new atomic-scale ion transistor has been developed using graphene channels around 3 angstroms in height controlled by electrical gating. The ultrafast and selective ion transport is achieved, with a diffusion coefficient reaching two orders of magnitude higher than in bulk water. In situ optical measurements suggest that the rapid ion transport is likely due to highly dense packing of ions and their concerted movement inside the graphene channels.
Article
Multidisciplinary Sciences
Shoufeng Lan, Xiaoze Liu, Siqi Wang, Hanyu Zhu, Yawen Liu, Cheng Gong, Sui Yang, Jing Shi, Yuan Wang, Xiang Zhang
Summary: The study reports the first observation of a strong magneto-chiral response to excitons in twisted bilayer tungsten disulfide, providing a new pathway for device applications. The unique ExMCh processes enable active control of magneto-chiral applications in photochemical reactions, asymmetric synthesis, and drug delivery.
NATURE COMMUNICATIONS
(2021)
Editorial Material
Nanoscience & Nanotechnology
Javier Aizpurua, Harry A. Atwater, Jeremy J. Baumberg, Sergei I. Bozhevolnyi, Mark L. Brongersma, Jennifer A. Dionne, Harald Giessen, Naomi Halas, Yuri Kivshar, Matthias F. Kling, Ferenc Krausz, Stefan Maier, Sergey V. Makarov, Maiken Mikkelsen, Martin Moskovits, Peter Norlander, Teri Odom, Albert Polman, Cheng Wei Qiu, Mordechai Segev, Vladimir M. Shalaev, Paivi Torma, Din Ping Tsai, Ewold Verhagen, Anatoly Zayats, Xiang Zhang, Nikolay I. Zheludev
Summary: Mark Stockman was a founding member and evangelist in the field of plasmonics, known for his influential and creative contributions to the science of light.
Article
Physics, Multidisciplinary
Yan Meng, Xiaoxiao Wu, Yaxi Shen, Dong Liu, Zixian Liang, Xiang Zhang, Jensen Li
Summary: This article introduces a new device based on non-Hermitian topological systems, which combines the advantages of topological robustness and non-Hermiticity to achieve continuous and quantitative control of energy distribution ratio of waves. The device can be used as a sensitive beam splitter or a coupler switch, with potential applications in elastic circuits or networks.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Optics
Minchol Lee, Donghoon Koo, Jeongmin Kim
Summary: This paper introduces a simple and fast method to extract the nonuniformities in phase response and optical flatness of liquid-crystal-on-silicon spatial light modulators (SLMs) at single-pixel resolution using Twyman-Green interferometry without a piezoelectric transducer. By modulating the interference intensity via the SLM gray level, the method requires fewer interferograms than typical N-step phase shift interferometry (PSI), while providing accurate flatness correction. The calibration method works well with as few as 18 interferograms in practice and can be quickly acquired without concern for phase drift. The calibration procedure is detailed, and the performance of the calibration is discussed.
Review
Nanoscience & Nanotechnology
Jeongmin Kim
Summary: Oblique plane microscopy (OPM) enables direct capture of object information in a tilted plane, eliminating the need for slow z-stack acquisition. It combines oblique lightsheet illumination to make lightsheet imaging compatible with biological samples on microscope slides. OPM has evolved into an advanced microscope platform with potential applications in various research fields.
Article
Optics
Minchol Lee, Jaehyun Park, Jeongmin Kim
Summary: The study introduces a method called line spectroscopic reflectometry (LSR) for rapid thickness measurement of large optically transparent layers. By simultaneously measuring 2048 points, the method greatly improves measurement speed. The study also demonstrates the capability of LSR for thickness measurement and inline area measurement of different samples.
Article
Biochemical Research Methods
Donghoon Koo, Minchol Lee, Youngseop Lee, Jeongmin Kim
Summary: Oblique plane microscopy-based single molecule localization microscopy (ob-STORM) has great potential for super-resolution imaging of thick biological specimens. However, the use of Gaussian point spread function (PSF) model in previous studies has resulted in limited imaging resolution and a narrow axial localization range. This study proposes a refined PSF model using cubic splines, which improves three-dimensional localization precision and enhances ob-STORM imaging of mouse retina tissues.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Nanoscience & Nanotechnology
Youngseop Lee, Yeunho Lee, Minchol Lee, Donghoon Koo, Dongwoo Kim, Hongrae Kim, Kangwon Lee, Jeongmin Kim
Summary: Stochastic optical reconstruction microscopy (STORM) provides super-resolution imaging by sparsely blinking dye molecules. This study introduces a 3-pyridinemethanol-based STORM buffer that matches the refractive index of oil immersion. The buffer enables high-quality STORM imaging and two-color imaging, and shows stability for 5 weeks. It is expected to improve imaging depth and localization in lightsheet STORM applications for thick tissues.
Review
Chemistry, Physical
Cheng Chang, Wei Chen, Ye Chen, Yonghua Chen, Yu Chen, Feng Ding, Chunhai Fan, Hong Jin Fan, Zhanxi Fan, Cheng Gong, Yongji Gong, Qiyuan He, Xun Hong, Sheng Hu, Weida Hu, Wei Huang, Yuan Huang, Wei Ji, Dehui Li, Lain-Jong Li, Qiang Li, Li Lin, Chongyi Ling, Minghua Liu, Nan Liu, Zhuang Liu, Kian Ping Loh, Jianmin Ma, Feng Miao, Hailin Peng, Mingfei Shao, Li Song, Shao Su, Shuo Sun, Chaoliang Tan, Zhiyong Tang, Dingsheng Wang, Huan Wang, Jinlan Wang, Xin Wang, Xinran Wang, Andrew T. S. Wee, Zhongming Wei, Yuen Wu, Zhong-Shuai Wu, Jie Xiong, Qihua Xiong, Weigao Xu, Peng Yin, Haibo Zeng, Zhiyuan Zeng, Tianyou Zhai, Han Zhang, Hui Zhang, Qichun Zhang, Tierui Zhang, Xiang Zhang, Li-Dong Zhao, Meiting Zhao, Weijie Zhao, Yunxuan Zhao, Kai-Ge Zhou, Xing Zhou, Yu Zhou, Hongwei Zhu, Hua Zhang, Zhongfan Liu
Summary: Research on two-dimensional materials has been rapidly increasing in the past seventeen years, starting from graphene and expanding into a diverse family with unique structures and properties, making them attractive candidates for various applications. Major breakthroughs have been made in the last five years in developing synthetic methods, exploring new properties, identifying innovative applications, and pushing for commercialization in the field of 2D materials.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Materials Science, Multidisciplinary
Sui Yang, Wei Bao, Xiaoze Liu, Jeongmin Kim, Rongkuo Zhao, Renmin Ma, Yuan Wang, Xiang Zhang
Summary: Halide perovskites possess remarkable photophysical properties that have led to high-performance lasers, but challenges in emission dynamics and laser size reduction remain. Plasmonic cavities have been used to address these challenges, but limitations still exist due to the trade-off between cavity size reduction and increased losses. The hybrid surface plasmon polaritons (SPPs) coupled with perovskites have shown to significantly reduce loss channels and enhance emission dynamics, paving the way for on-chip ultrafast optoelectronics.
