A5088830655- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- 2D Materials and Applications
- Plasmonic and Surface Plasmon Research
- MXene and MAX Phase Materials
- Orbital Angular Momentum in Optics
- Optical Wireless Communication Technologies
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Quantum Mechanics and Non-Hermitian Physics
- Antenna Design and Analysis
- Graphene research and applications
- Liquid Crystal Research Advancements
- Diamond and Carbon-based Materials Research
- Advanced Optical Imaging Technologies
- Chaos-based Image/Signal Encryption
- graph theory and CDMA systems
- Random lasers and scattering media
- Semiconductor materials and devices
- Phase-change materials and chalcogenides
- Advancements in Semiconductor Devices and Circuit Design
- Terahertz technology and applications
- Force Microscopy Techniques and Applications
- Topological Materials and Phenomena
- Photonic Crystals and Applications
Institute of Physics
2017-2025
Chinese Academy of Sciences
2016-2025
BOE Technology Group (China)
2023-2025
Czech Academy of Sciences, Institute of Physics
2025
University of Chinese Academy of Sciences
2018-2024
Peking University
2022
Songshan Lake Materials Laboratory
2022
Collaborative Innovation Center of Quantum Matter
2017
Ningbo Institute of Industrial Technology
2016
Two-dimensional (2D) materials have attracted considerable interest due to their remarkable properties and potential applications for nanoelectronics, electrodes, energy storage devices, among others. However, many well-studied 2D lack appreciable conductivity tunable mechanical strength, limiting in flexible devices. Newly developed MXenes open up the opportunity design novel conductive electronic materials. Here, using density functional theory (DFT), we investigate systematically effects...
With unusual electromagnetic radiation properties and great application potentials, optical toroidal moments have received increasing interest in recent years. 3D metamaterials composed of split ring resonators with specific orientations micro‐/nanoscale are a perfect choice for moment realization frequency considering the excellent magnetic confinement quality factor, which, unfortunately, currently beyond reach existing micro‐/nanofabrication techniques. Here, metamaterial operating...
Metalenses as miniature flat lenses exhibit a substantial potential in replacing traditional optical component. Although the metalenses have been intensively explored, their functions are limited by poor active ability, narrow operating band and small depth of field (DOF). Here, we show dielectric metalens consisting TiO2 nanofins array with ultrahigh aspect ratio to realize multiband varifocal function. Regulating orbital angular momentum (OAM) phase assignment covering 2π range, its focal...
Recently, multidimensional metasurfaces, which can modulate multiple optical parameters of input and output lights simultaneously, have aroused intensive interest. Here, we demonstrate switchable images 3D integrated beam splitters based on hyperbolic metamaterials (HMMs). On one hand, a image controlled by helicity wavelengths is achieved arranging HMMs with different polarization conversion performance. the other polarization-multiplexed broadband splitter generated spatially engineering...
Abstract Terahertz waves have widespread applications in various fields ranging from wireless communication to fundamental physics. Achieving bright and broadband terahertz sources still remains a challenge. Recent research has revealed that all‐dielectric metasurfaces with strong electromagnetic resonances negligible Ohmic loss can enhance nonlinear optical processes weaken the influences of phase‐matching conditions, providing new opportunities for developing sources. Here, an metasurface...
Exceptional points (EPs), known as non-Hermitian singularities, have been observed and investigated in parity-time symmetric metasurfaces. However, the chirality tunability metasurfaces still need to be explored. Here, we propose a dynamic topological metasurface with meta-atom consisting of two orthogonally oriented nanorods, which are placed on phase change material Ge2Sb2Te5 (GST) SiO2 dielectric layer, respectively. When GST is converted from amorphous state (a-GST) crystalline (c-GST),...
Abstract Photonic routing holds immense significance in the fields of photonic integrated circuits (PICs) for free‐space optical linking. The emergence programmable metasurfaces with powerful phase regulation capability provides a promising strategy achieving designated wavefront modulation and thus communication waveband. Here, bilayer four‐level codable unit pixels, which realize controllable near‐infrared (NIR) region is reported. pixel consists underneath amorphous silicon ( α ‐Si)...
Abstract Chiral metasurfaces offer crucial opportunities to expand the application potential for chiral photonics, but its desired freely structural control and giant circular dichroism (CD) allow more greater challenges. Here, different from previous with single regulation, a kind of bifunctional metasurface based on 3D bended asymmetric construction is proposed, which shows CD combined chirality at 5.2 µm. The abundant spatial freedom, consisting an array split ring resonators (SRRs), can...
The secure storage and transmission of information are core measures that ensure data security. Within intricate landscapes, reconfigurable encryption mechanisms serve as robust defenses against potential breaches encrypted data. Here, we propose a visual secret sharing (VSS) strategy leverages the capabilities optical metasurfaces exhibits dual-channel secondary scheme. This method employs three shared keys (SKs) hidden in near-field spin-decoupled far-field channels metasurface to perform...
Exceptional points (EPs) are unique features of non-Hermitian systems, where eigenvalues and eigenvectors coalesce, enabling functionalities such as ultrasensitive sensing topological energy transfer. While higher-order EPs have been studied in microdisk cavities circuits, their realization metasurfaces has challenging. In this work, we demonstrate the first a third-order EP (EP3) terahertz by tuning near-field interaction between three gold split-ring resonators. This transition from...
Abstract Metasurfaces are 2D artificial nanostructures that exhibit fascinating optical phenomena and flexible capabilities. Multi-optical-parameter metasurfaces have advantages over single-function or single-dimensional metasurfaces, especially in practical applications like holography, sub-diffraction imaging, vectorial fields. However, achieving multi-optical-parameter control is challenging due to a lack of design strategy, limited manipulation channels, signal-to-noise ratio problems....
Ge2Sb2Te5 (GST) is a kind of non-volatile chalcogenide phase-change material, which has significant difference in permittivity between its amorphous and crystalline states the infrared range. On account this remarkable property, combination GST metamaterials great potential tunable meta-devices. In paper, perfect absorber based on nanocross-resonator array stacked above spacer layer an Au mirror (i.e., metal-dielectric-metal configuration) designed experimentally demonstrated. A thin indium...
Twisted bilayer (tB) transition metal dichalcogenide (TMD) structures formed from two pieces of a periodic pattern overlaid with relative twist manifest novel electronic and optical properties correlated phenomena. Here, twisted flower-like MoS2 MoSe2 bilayers were artificially fabricated by the chemical vapor deposition (CVD) method. Photoluminescence (PL) studies demonstrated that an energy band structural indirect gap to direct happened in region away flower center tB (MoSe2) patterns,...
As artificial materials composed of subwavelength structures, metasurfaces have a strong ability to control linear and nonlinear light fields, which greatly promotes the development nanophotonics. Recently, plasmonic been proven behave as saturable absorbers (SAs) with modulation performance much higher than that other SAs, exhibiting excellent polarization transfer functions. However, due dependence resonance, working bandwidth metasurface saturated is usually very narrow, not favorable for...
Phase change materials have been widely exploited in active metasurfaces due to their large index contrast. Despite recent advances phase-change metasurfaces, it remains a challenge integrate diverse reconfigurable optical functionalities into single metasurface. Here, we demonstrate an effective strategy realize wavefront control by combining Ge2Sb2Te5-rod array with laser writing technology. Through arbitrarily modifying the position and power of source, process helps site-selective...
Abstract Through considering an unconventional parameter of electromagnetic waves, Janus metasurfaces offer a new strategy to integrate multiple functionalities into single device. However, the traditional lack reconfigurability and suffer from complex manufacture process due common multilayer structures. Herein, it is shown that multi‐encrypted metasurface integrating with phase change material Ge 2 Sb Te 5 (GST) can achieve tunable switching dual two‐faced spatial asymmetric wavefront...
The realization of tunable metasurfaces is fundamental importance for boosting the electromagnetic field control ability. Especially, it important to put forward new modulation methods further understand their underlying mechanism and expand application range. In this paper, electromagnetically induced transparency (EIT) based on phase change material Ge2Sb2Te5 (GST) are proposed experimentally demonstrated. Different from previous directly introducing GST film below metasurfaces, here a...
Abstract As an inherent characteristic of light, polarization plays important roles in information storage, display and even encryption. Metasurfaces, composed specifically designed subwavelength units a two-dimensional plane, offer great convenience for manipulation, yet improving their integrability broadband fidelity remain significant challenges. Here, based on the combination various cross-nanofins (CNs), new type metasurface multichannel hybrid distribution near-field is proposed....
On-chip polarization-sensitive photodetectors are highly desired for ultra-compact optoelectronic systems. It has been demonstrated that photodetection can be realized using intrinsic chiral and anisotropy materials. However, these only realize the detection of either circularly polarized light (CPL) or linear (LPL) not applicable to multiple-polarization-sensitive photodetection. Herein, we experimentally demonstrate a metasurface-integrated semiconductor at visible wavelengths. This device...
Abstract Micro/nano origami is a fascinating 3D fabrication technology, showing strong ability to control structural space degrees of freedom, but which are usually only able achieve single‐direction and hence its controlling spatial orientation still limited certain extent. Here, the bidirectional induced by focused ion beam irradiation proposed break through freedom realize challenging micro/nanofabrication. It found that FIB‐induced deformation mainly relies on both materials doses, can...
Strain engineering, aiming to tune physical properties of semiconductors, provides a promising paradigm for modern micro/nanoelectronics. Two-dimensional materials (2DMs) are the ideal candidates next generation strain engineered devices because their intrinsic exceptional mechanical flexibility and strength. However, conventional modulation methods in 2DMs cannot satisfy demand future device applications, strained structures by these lack consistency, reproducibility, design flexibility....
Abstract Dark excitons are fascinating for condensed matter physics, quantum information processing, and optoelectronics due to their long lifetimes. However, direct optical access dark is still challenging the violation of spin selection rule. Here, a new scheme brightening spin‐forbidden exciton in WS 2 monolayers by creating artificial out‐of‐plane shear strain that induces an effective in‐plane pseudo‐magnetic field proposed. To reveal excitons, low‐temperature magneto‐photoluminescence...