Ruonan Ji
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View article: A 0.18 cubic centimeter 3D meta-holographic zoom micro-projector
A 0.18 cubic centimeter 3D meta-holographic zoom micro-projector Open
Meta-holography has become a frontier hot spot of photonics, thanks to the rapid advancement of nanofabrication. Tunable meta-holography significantly enhances information capacity and meets the growing demands of adaptive imaging, offerin…
View article: Excitation of Tamm plasmon polariton in ultrathin metals
Excitation of Tamm plasmon polariton in ultrathin metals Open
Tamm plasmon polariton (TPP) has unique localization and manipulability but cannot be excited with ultrathin metal films. We propose a strategy to realize generalized TPP (GTPP) in an ultrathin metal film as metainterface by introducing a …
View article: Full Color 3D Meta‐Holography Based on Achromatic Fresnel Near‐Field Diffraction Algorithm
Full Color 3D Meta‐Holography Based on Achromatic Fresnel Near‐Field Diffraction Algorithm Open
Metasurface, composed of sub‐wavelength unit cells, can provide unprecedented control over the wavefront and bring new opportunities for the development of holography. How to realize achromatic color meta‐holography has always been an urge…
View article: Chiral Metasurfaces with Decoupled Intensity‐Phase Control for Multifunctional Optical Security and Holographic Displays
Chiral Metasurfaces with Decoupled Intensity‐Phase Control for Multifunctional Optical Security and Holographic Displays Open
Simultaneous and independent control of light's intensity and phase remains a critical challenge for multifunctional metasurfaces, as conventional designs suffer from inherent parameter correlations and orientation‐dependent limitations. H…
View article: Multi‐Wavelength Achromatic 3D Meta‐holography with Zoom Function
Multi‐Wavelength Achromatic 3D Meta‐holography with Zoom Function Open
With the development of nanofabrication technology, meta‐holography has shown unprecedented potential for light regulation. However, due to the wavelength mismatch, chromatic aberrations are inevitable in multi‐wavelength meta‐holography. …
View article: Decimeter-depth and polarization addressable color 3D meta-holography
Decimeter-depth and polarization addressable color 3D meta-holography Open
View article: High refractive index chalcogenide polymer-based planar refractive microlens components
High refractive index chalcogenide polymer-based planar refractive microlens components Open
View article: Ultra-wideband chiroptical response by tri-layer anisotropic plasmonic metamaterial
Ultra-wideband chiroptical response by tri-layer anisotropic plasmonic metamaterial Open
The use of plasmonic chiral metamaterials for the control of circular polarization has the potential to replace conventional optical equipment for polarization-related applications. The ultra-broadband chiroptic response using plasmonic co…
View article: Multi‐Type Topological States in Higher‐Order Photonic Insulators Based on Kagome Metal Lattices
Multi‐Type Topological States in Higher‐Order Photonic Insulators Based on Kagome Metal Lattices Open
Tunability of topological photonic structures opens a new avenue for photonics research. The rich physical characteristics of the topological photonics have great significance in practical implementations. In this paper, multi‐type topolog…
View article: Frequency and Angle Multiplexed Metadevices with Multifunctional Polarization Modulation
Frequency and Angle Multiplexed Metadevices with Multifunctional Polarization Modulation Open
Multifunctional polarization controllers are highly desirable in numerous fields due to their potential applications. Although the emergence of metasurfaces provides a powerful platform for manipulating the polarization of electromagnetic …
View article: Modular Design for Versatile Broadband Polarizing Metasurfaces with Freely Switching Functions (Adv. Funct. Mater. 27/2023)
Modular Design for Versatile Broadband Polarizing Metasurfaces with Freely Switching Functions (Adv. Funct. Mater. 27/2023) Open
Modular Polarizing Metasurfaces In article number 2215105, Miguel Navarro-Cía, Yahong Liu, Kun Song, and co-workers propose an ingenious strategy of modular design to construct multifunctional polarization controllers. Similar to building …
View article: Modular Design for Versatile Broadband Polarizing Metasurfaces with Freely Switching Functions
Modular Design for Versatile Broadband Polarizing Metasurfaces with Freely Switching Functions Open
Polarization is a fundamental property of electromagnetic waves that plays a key role in many physical phenomena and applications. Schemes to manipulate it are revisited with the emergence of metasurfaces, which have brought multi‐function…
View article: Piezoelectric Behavior of Single-Layer Oxidized-Mxene for Nanogenerators and Piezotronics
Piezoelectric Behavior of Single-Layer Oxidized-Mxene for Nanogenerators and Piezotronics Open
View article: A Single-Celled Metasurface for Multipolarization Generation and Wavefront Manipulation
A Single-Celled Metasurface for Multipolarization Generation and Wavefront Manipulation Open
Due to their unprecedented ability to flexibly manipulate the parameters of light, metasurfaces offer a new approach to integrating multiple functions in a single optical element. In this paper, based on a single-celled metasurface compose…
View article: Mechanically-Reconfigurable Edge States in an Ultrathin Valley-Hall Topological Metamaterial
Mechanically-Reconfigurable Edge States in an Ultrathin Valley-Hall Topological Metamaterial Open
Broadband topological metamaterials hold the key for designing the next generation of integrated photonic platforms and microwave devices given their protected back-scattering-free and unidirectional edge states, among other exotic propert…
View article: Mechanically‐Reconfigurable Edge States in an Ultrathin Valley‐Hall Topological Metamaterial
Mechanically‐Reconfigurable Edge States in an Ultrathin Valley‐Hall Topological Metamaterial Open
Broadband topological metamaterials hold the key for designing the next generation of integrated photonic platforms and microwave devices given their protected back‐scattering‐free and unidirectional edge states, among other exotic propert…
View article: Monolayer MXene Nanoelectromechanical Piezo‐Resonators with 0.2 Zeptogram Mass Resolution
Monolayer MXene Nanoelectromechanical Piezo‐Resonators with 0.2 Zeptogram Mass Resolution Open
2D materials‐based nanoelectromechanical resonant systems with high sensitivity can precisely trace quantities of ultra‐small mass molecules and therefore are broadly applied in biological analysis, chemical sensing, and physical detection…
View article: Weyl Point and Nontrivial Surface States in a Helical Topological Material
Weyl Point and Nontrivial Surface States in a Helical Topological Material Open
Topological material has been widely studied in recent years because of excellent physical properties. In this paper, a Weyl topological material composed of the double left-handed helixes is presented. It is demonstrated that the proposed…
View article: Dual-band all-dielectric chiral photonic crystal
Dual-band all-dielectric chiral photonic crystal Open
We present an all-dielectric chiral photonic crystal that guides the propagation of electromagnetic waves without backscattering for dual bands. The chiral photonic crystal unit cell is composed of four dielectric cylinders with increasing…
View article: Spin-decoupled metasurface for broadband and pixel-saving polarization rotation and wavefront control
Spin-decoupled metasurface for broadband and pixel-saving polarization rotation and wavefront control Open
In this paper, a strategy to achieve a simultaneous wavefront shaping and polarization rotation, without compromising the number of pixels and energy efficiency as well as having broadband operation range, is proposed. This strategy is bas…
View article: Chirality-Assisted Aharonov–Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation
Chirality-Assisted Aharonov–Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation Open
In this work, a quasi-nondispersive and spin-decoupled phase modulation strategy was proposed based on the chiral structure. Owing to the spin-dependent response of the chiral structure, the evolution of the Aharonov-Anandan (AA) geometric…
View article: Design of Multifunctional Janus Metasurface Based on Subwavelength Grating
Design of Multifunctional Janus Metasurface Based on Subwavelength Grating Open
In this paper, a Janus metasurface is designed by breaking the structural symmetry based on the polarization selection property of subwavelength grating. The structure comprises three layers: a top layer having a metallic nanostructure, a …
View article: Ultrathin Dielectric Perfect Absorber: Large‐Area Low‐Cost Dielectric Perfect Absorber by One‐Step Sputtering (Advanced Optical Materials 9/2019)
Ultrathin Dielectric Perfect Absorber: Large‐Area Low‐Cost Dielectric Perfect Absorber by One‐Step Sputtering (Advanced Optical Materials 9/2019) Open
Shaowei Wang, Wei Lu and co-workers (article number 1801596) have developed an ultrathin perfect absorber with a dielectric plasmonic nanocomposite (TiN@AlN) and antireflective coating. The absorptivity is ultra-high with average photon es…
View article: High-Efficiency and Wide-Angle Versatile Polarization Controller Based on Metagratings
High-Efficiency and Wide-Angle Versatile Polarization Controller Based on Metagratings Open
Metamaterials with their customized properties enable us to efficiently manipulate the polarization states of electromagnetic waves with flexible approaches, which is of great significance in various realms. However, most current metamater…
View article: Large-area, lithography-free, narrow-band and highly directional thermal emitter
Large-area, lithography-free, narrow-band and highly directional thermal emitter Open
In this work, the authors propose and experimentally demonstrate a large-area long-wavelength infrared thermal emitter, which is spectrally selective, highly directional, and easily fabricated.
View article: Broadband and high-efficiency transmissive-type nondispersive polarization conversion meta-device
Broadband and high-efficiency transmissive-type nondispersive polarization conversion meta-device Open
Metamaterials with tailored electromagnetic properties hold great promise for the manipulation of electromagnetic waves. Here, we propose an intriguing off-resonance meta-device to control the polarization states and dispersive features of…
View article: High-Speed Visible Light Communications: Enabling Technologies and State of the Art
High-Speed Visible Light Communications: Enabling Technologies and State of the Art Open
In the nearest decades, the rapidly increasing demand of wireless connectivity has resulted in the ubiquitous deployment of wireless systems as well as heavily congested wireless spectrum. Owing to the various inherent advantages, such as …
View article: Interference-aided spectrum fitting method for accurately film thickness determination
Interference-aided spectrum fitting method for accurately film thickness determination Open
A new approach was proposed to accurately determine the thickness of film, especially for ultra-thin film, through spectrum fitting with the assistance of interference layer. The determination limit can reach even less than 1 nm. Its accur…
View article: Colorful solar selective absorber integrated with different colored units
Colorful solar selective absorber integrated with different colored units Open
Solar selective absorbers are the core part for solar thermal technologies such as solar water heaters, concentrated solar power, solar thermoelectric generators and solar thermophotovoltaics. Colorful solar selective absorber can provide …
View article: Y2O3: Eu3+, Tb3+ spherical particles based anti-reflection and wavelength conversion bi-functional films: Synthesis and application to solar cells
Y2O3: Eu3+, Tb3+ spherical particles based anti-reflection and wavelength conversion bi-functional films: Synthesis and application to solar cells Open