A5014949503- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Microbial Natural Products and Biosynthesis
- Orbital Angular Momentum in Optics
- Photonic Crystals and Applications
- Advanced Antenna and Metasurface Technologies
- Quantum optics and atomic interactions
- Mechanical and Optical Resonators
- Metal-Catalyzed Oxygenation Mechanisms
- Quantum Information and Cryptography
- Click Chemistry and Applications
- Nanoplatforms for cancer theranostics
- Microbial bioremediation and biosurfactants
- Surface Roughness and Optical Measurements
- Fungal Biology and Applications
- Marine Toxins and Detection Methods
- Thermal Radiation and Cooling Technologies
- Photodynamic Therapy Research Studies
- Optical measurement and interference techniques
- Antenna Design and Analysis
- Plant biochemistry and biosynthesis
- ATP Synthase and ATPases Research
- Synthetic Organic Chemistry Methods
- Advanced Measurement and Metrology Techniques
- Marine and coastal ecosystems
Tsinghua University
2022-2025
Jiangnan University
2018-2024
Tsinghua–Berkeley Shenzhen Institute
2022-2023
Arbitrary polarized vortex beam induced by polarization singularity offers a new platform for both classical optics and quantum entanglement applications. Bound states in the continuum (BICs) have been demonstrated to be associated with topological charge singularities momentum space. For conventional symmetric photonic crystal slabs (PhCSs), BIC is enclosed linearly far fields winding angle of 2π, which unfavorable high-capacity multi-functionality integration-optics Here, we show that...
Harnessing linear and angular momenta of light is one the cornerstones in modern optics has found tremendous applications optical circuits, particle manipulation, metrology, quantum information processing, etc. Emerging theoretical protocols experimental explorations have created a surge interest lateral forces, which are perpendicular to wave propagation direction. However, there yet lack comprehensive holistic overview transverse (both angular) as well forces (OLFs). In this article, we...
Polarization singularities and topological vortices in photonic crystal slabs centered at bound states the continuum (BICs) can be attributed to zero amplitude of polarization vectors. We show that such features are also observed optical forces within vicinity BIC, around which force vectors wind momentum space. The carries charge used for trapping repelling nanoparticles. By tailoring asymmetry slab, will contain spinning behavior shifted zeros, lead three-dimensional asymmetric trapping....
C points, circular polarization in momentum space, play crucial roles chiral wave manipulations. However, conventional approaches of achieving intrinsic points using photonic crystals with broken symmetries suffer from a low Q factor and high sensitivity to structural geometry, rendering them fragile susceptible perturbations disorders. We report magneto-optical (MO) bound states the continuum (BICs) symmetry-preserved planar crystal. achieve at Γ point that are robust against variation both...
Abstract The construction of structural complexity and diversity natural products is crucial for drug discovery development. To overcome high dark toxicity poor photostability photosensitizer perylenequinones (PQs) photodynamic therapy, herein, we aim to introduce the biosynthesize desired unnatural PQs in fungus Cercospora through synthetic biology‐based strategy. Thus, first elucidate intricate biosynthetic pathways class B reveal how branching enzymes create their from a common ancestor....
The successful biomimetic or chemoenzymatic synthesis of target natural products (NPs) and their derivatives relies on enzyme discovery. Herein, we discover a fungal P450 BTG5 that can catalyze the formation bicyclo[3.2.2]nonane structure through an unusual two-step mechanism dimerization cyclization in biosynthesis beticolin 1, whose skeleton connects anthraquinone moiety xanthone moiety. Further investigation reveals BTG5-T318 not only determines substrate selectivity but also alters...
This study used light-mediated comparative transcriptomics to identify the biosynthetic gene cluster of beticolin 1 in Cercospora. It contains an anthraquinone moiety and unusual halogenated xanthone connected by a bicyclo[3.2.2]nonane. During elucidation pathway 1, novel non-heme iron oxygenase BTG13 responsible for ring cleavage was discovered. More importantly, discovery is well supported experimental evidence: (i) crystal structure inductively coupled plasma mass spectrometry revealed...
Herein, we present an adjustable absorber consisting of a periodically patterned elliptical graphene disk array, which absorbs in the THz region. When circularly polarized light beam illuminates this structure, its absorption spectrum displays two peaks, originate from F-P resonance fundamental edge plasmon mode along major and minor axes disk. The position these peaks can be modulated by changing Fermi level graphene. Furthermore, both bands merge into one broadband length axes. full width...
Bell state measurement is vital to quantum information technology. Conventional linear optical elements, however, cannot fully distinguish all polarization states without assisting of additional degrees freedom. Leveraging on a pair binary-pixel metasurfaces, we demonstrate direct four states. Each metasurface designed produce two output modes that linearly superpose three in the coincidence counting measurement. By rotating polarizers, achieves tunable anticorrelation between one and other...
Photonic spin Hall effect (PSHE) of type II hyperbolic metamaterials is achieved due to near filed interference, which provides a way decide the propagation direction subwavelength beam. In this paper, we propose graphene-based (GHMMs), composed alternating graphene/SiO2 multilayer. The numerical results show that when dipole emitter placed at boundary GHMMs, beam with λ/40 full-with half maximum can be excited and propagates along left or right channel, dependent on polarization handedness....
Circular dichroism (CD) of a stretchable chiral metamaterial with bilayer L-shaped and T-shaped Au patterns on the Polydimethylsiloxane substrate (SCMM-BLT) is investigated theoretically. Due to excitation plasmonic hybridization modes, CD effect happens. SCMM-BLT can produce large optical chirality (OC) 53.6% in mid-infrared region, we attribute double bands bonding antibonding modes. By stretching SCMM-BLT, shift longer wavelengths, which prove be candidate as tunable metamaterial. Our...
Based on in-plane anisotropy of black phosphorus (BP), anisotropic photonics topological transition (PTT) can be achieved by the proposed hyperbolic metamaterials structure, which is composed alternating BP/SiO2 multilayer. Through effective medium theory and calculated iso-frequency contour, PTT found carefully choosing incident plane other parameters. With finite element method transfer matrix method, a narrow angular optical transparency window with full width at half maximum 1.32° exists...
Abstract The construction of structural complexity and diversity natural products is crucial for drug discovery development. To overcome high dark toxicity poor photostability photosensitizer perylenequinones (PQs) photodynamic therapy, herein, we aim to introduce the biosynthesize desired unnatural PQs in fungus Cercospora through synthetic biology‐based strategy. Thus, first elucidate intricate biosynthetic pathways class B reveal how branching enzymes create their from a common ancestor....
Abstract This study used light‐mediated comparative transcriptomics to identify the biosynthetic gene cluster of beticolin 1 in Cercospora . It contains an anthraquinone moiety and unusual halogenated xanthone connected by a bicyclo[3.2.2]nonane. During elucidation pathway 1, novel non‐heme iron oxygenase BTG13 responsible for ring cleavage was discovered. More importantly, discovery is well supported experimental evidence: (i) crystal structure inductively coupled plasma mass spectrometry...
Abstract We propose a graphene embedded one-dimensional (1D) topological photonic crystal heterostructure, where the coupling occurs between edge mode (TEM) and Fabry–Perot cavity (CM). It is shown that leads to hybridization TEM CM, with Rabi splitting. Based on finite element method, dual-band near-perfect absorption found in splitting region near-infrared range. The resonant wavelengths of two peaks are 1537 1579 nm, respectively. And can be modulated by thickness defect layer, distance...
The dual-channel nearly perfect absorption is realized by the coupled modes of topological interface states (TIS) in near-infrared range. An all-dielectric layered heterostructure composed photonic crystals (PhC)/graphene/PhC/graphene/PhC on GaAs substrate proposed to excite TIS at adjacent PhC with opposite properties. Based finite element method (FEM) and transfer matrix (TMM), can be modulated periodic number middle PhC, Fermi level graphene, angle incident light (TE TM polarizations)....
C points, characterized by circular polarization in momentum space, play crucial roles chiral wave manipulations. However, conventional approaches of achieving intrinsic points using photonic crystals with broken symmetries suffer from low Q factor and are highly sensitive to structural geometry, rendering them fragile susceptible perturbations disorders. In this letter, we report the realization magneto-optical (MO) bound states continuum (BICs) a symmetry-preserved planar crystal,...
Hyperbolic metamaterials have recently been widely investigated in nanophotonics systems. Here, we propose an alternating graphene/${{\rm SiO}_2}$SiO2 multilayer structure as anisotropic medium with hyperbolic dispersion. When in-plane and out-of-plane effective permittivity is negative positive, respectively, the incident beam (transverse magnetic polarization wave) can be split into two subwavelength beams, a dark hollow achieved for circularly polarized incidence. Also, size of tuned by...