A5088965001- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Topological Materials and Phenomena
- Graphene research and applications
- Terahertz technology and applications
- Thermal Radiation and Cooling Technologies
- Random lasers and scattering media
- Advanced Fiber Optic Sensors
- Quantum optics and atomic interactions
- Strong Light-Matter Interactions
- Quantum Information and Cryptography
- Optical Network Technologies
- Mechanical and Optical Resonators
- Quantum Mechanics and Non-Hermitian Physics
- Neural Networks and Reservoir Computing
- Advanced Electron Microscopy Techniques and Applications
- Crystallography and Radiation Phenomena
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum and electron transport phenomena
- Gyrotron and Vacuum Electronics Research
- Near-Field Optical Microscopy
Zhejiang University
2015-2025
State Key Laboratory of Modern Optical Instruments
2014-2024
Alpha Omega Electromagnetics (United States)
2024
Zhejiang Lab
2024
Tarim University
2023
Hunan University
2022
Zhejiang University-University of Edinburgh Institute
2020-2022
Jinhua Academy of Agricultural Sciences
2022
Zhejiang University of Science and Technology
2022
University of Minnesota
2021
The manipulation of acoustic wave propagation in fluids has numerous applications, including some everyday life. Acoustic technologies frequently develop tandem with optics, using shared concepts such as waveguiding and metamedia. It is thus noteworthy that an entirely novel class electromagnetic waves, known topological edge states, recently been demonstrated. These are inspired by the electronic states occurring insulators, possess a striking technologically promising property: ability to...
Topological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated a few systems, including an array of coupled on-chip ring resonators at communication wavelengths. However, the intrinsic difference between electrons and photons determines that protection time-reversal-invariant systems does not share same robustness as its counterpart electronic insulators. Here, designer surface plasmon platform consisting tunable metallic...
Optical logic operations lie at the heart of optical computing, and they enable many applications such as ultrahigh-speed information processing. However, reported gates rely heavily on precise control input light signals, including their phase difference, polarization, intensity size incident beams. Due to complexity difficulty in these controls, two output states may suffer from an inherent instability a low contrast ratio intensity. Moreover, miniaturization becomes difficult if extra...
Abstract Topological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated a few systems, including an array of coupled on-chip ring resonators at communication wavelengths. However, the intrinsic difference between electrons and photons determines that ‘topological protection’ time-reversal-invariant systems does not share same robustness as its counterpart electronic insulators. Here designer surface plasmon platform consisting...
A fundamental building block for nanophotonics is the ability to achieve negative refraction of polaritons, because this could enable demonstration many unique nanoscale applications such as deep-subwavelength imaging, superlens, and novel guiding. However, highly squeezed plasmon polaritons in graphene phonon boron nitride (BN) with their wavelengths by a factor over 100, requires flip sign group velocity at will, which challenging. Here we reveal that strong coupling between graphene-BN...
Breakthroughs in the field of object recognition facilitate ubiquitous applications modern world, ranging from security and surveillance equipment to accessibility devices for visually impaired. Recently-emerged optical computing provides a fundamentally new modality accelerate its solution with photons; however, it still necessitates digital processing situ application, inextricably tied Moore's law. Here, an entirely perspective, we introduce concept neuro-metamaterials that can be applied...
properties of the optical surface plasmons in microwave and terahertz frequencies using subwavelength artificial structures to construct negative permittivity.The spoof also benefit from realization ultrathin corrugated metallic strips [14], as they are compatible with printed circuit boards (PCBs) integrated technologies.Since propagating localized were experimentally realized PCBs 2013 2014 [14, 15], this area flourishes prospective applications emerging circuits, sensing, wireless...
Abstract Anisotropic planar polaritons - hybrid electromagnetic modes mediated by phonons, plasmons, or excitons in biaxial two-dimensional (2D) van der Waals crystals have attracted significant attention due to their fundamental physics and potential nanophotonic applications. In this Perspective, we review the properties of hyperbolic variety methods that can be used experimentally tune them. We argue such natural, media should fairly common uniaxial 2D 1D crystals, identify untapped...
Abstract Recently, the studies of topological corner states (TCSs) have been extended from crystals to quasicrystals, which are referred as higher‐order quasicrystalline insulators (HOTQIs). However, TCSs complete quasi‐periodic structure in photonic systems yet be demonstrated. Moreover, there is only one TCS each region (HOTIs). Increasing number expected increase application potential TCSs. In this work, HOTQIs experimentally observed. It found that possess arrays, and array contains...
Free-electron radiation, such as Cherenkov radiation and transition can generate light at arbitrary frequencies is fundamental to diverse applications, ranging from electron microscopy, spectroscopy, lasers, particle detectors. Generally, the features of free-electron are stochastic when electrons interact with random media. Counterintuitively, here, we reveal a type that has both its intensity directionality invariant specific sorts long-range structural randomness. Essentially, this...
Two-dimensional graphene-like silicon carbide (2d-SiC) has emerged as an intriguing new class of layered nanostructure. Using density functional theory, key electronic and optical properties 2d-SiC nanosheets, in particular, mono- bilayer 2d-SiC, are investigated. The these nanosheets found to be highly dependent on their physical thickness geometric configuration. Multilayer exhibits indirect bandgap. We find that monolayer the other hand, a direct bandgap (∼2.5 eV) can tuned through...
Point-of-care (POC) and disposable biomedical applications demand low-power microfluidic systems with pumping components that provide controlled pressure sources. Unfortunately, external pumps have hindered the implementation of such due to limitations associated portability power requirements. Here, we propose demonstrate a 'finger-powered' integrated system as modular element head for variety advanced applications, including finger-powered on-chip microdroplet generation. By utilizing...
Superscattering, induced by degenerate resonances, breaks the fundamental single-channel limit of scattering cross section subwavelength structures; in principle, an arbitrarily large total can be achieved via superscattering. It thus provides a unique way to strengthen light-matter interaction at scale, and has many potential applications sensing, energy harvesting, bioimaging (such as magnetic resonance imaging), communication, optoelectronics. However, experimental demonstration...
Recent studies have revealed the counterintuitive possibility that increasing disorder can turn a topologically trivial insulator into nontrivial insulator, called topological Anderson (TAI). Here, we propose and experimentally demonstrate photonic TAI in two-dimensional disordered gyromagnetic crystal microwave regime. We directly observe disorder-induced phase transition from to with robust chiral edge states. also heterostructures host states at interfaces between domains different parameters.
Abstract Extensive researches have revealed that valley, a binary degree of freedom (DOF), can be an excellent candidate information carrier. Recently, valley DOF is introduced into photonic systems, and several valley‐Hall topological insulators (PTIs) are experimentally demonstrated. However, in the previous PTIs, kink states only work at single frequency band, which limits potential applications multiband waveguides, filters, communications, so on. To overcome this challenge, here PTI,...
Abstract Recent advances in engineered material technologies (e.g., photonic crystals, metamaterials, plasmonics, etc.) provide valuable tools to control Cherenkov radiation. In all these approaches, however, the particle velocity is a key parameter affect radiation designed material, while influence of trajectory generally negligible. Here, we report on surface Dyakonov–Cherenkov radiation, i.e. emission directional Dyakonov waves from swift charged moving atop birefringent crystal. This...
For over 80 years of research, the conventional description free-electron radiation phenomena, such as Cherenkov radiation, has remained unchanged: classical three-dimensional electromagnetic waves. Interestingly, in reduced dimensionality, properties are predicted to fundamentally change. Here, we present first observation surface waves, wherein free electrons emit narrow-bandwidth photonic quasiparticles propagating two-dimensions. The low dimensionality and narrow bandwidth effect enable...
The emerging field of free-electron quantum optics enables electron-photon entanglement and holds the potential for generating nontrivial photon states information processing. Although recent experimental studies have entered regime, rapid theoretical developments predict that qualitatively unique phenomena only emerge beyond a certain interaction strength. It is thus pertinent to identify maximal strength materials, geometries, particle energies enable one approach it. We derive an upper...
An in-plane pressure sensor (IPPS) consisting of graphene sandwiched by hexagonal boron nitride (h-BN) and a tunneling (TPS) h-BN are demonstrated. The responses as function external modeled. current varies 3 orders magnitude increases from 0 to 5 nN/nm2. IPPS is negatively correlated pressure, whereas TPS exhibits positive correlation pressure. design insensitive the number wrapping layers, indicating precise process control unnecessary. result paves viable avenue towards realizing atomic...
Revealing how 2D plasmons emerge and evolve in electron energy–loss spectroscopy (EELS).