A5080580973- Topological Materials and Phenomena
- Advanced Condensed Matter Physics
- Molecular Junctions and Nanostructures
- Organic Light-Emitting Diodes Research
- Plasmonic and Surface Plasmon Research
- 2D Materials and Applications
- Strong Light-Matter Interactions
- Organic Electronics and Photovoltaics
- Spectroscopy and Quantum Chemical Studies
- Iron-based superconductors research
- Advanced Fiber Laser Technologies
- Terahertz technology and applications
- Gas Sensing Nanomaterials and Sensors
- Laser-Matter Interactions and Applications
- Analytical Chemistry and Sensors
- Mechanical and Optical Resonators
- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
- Calibration and Measurement Techniques
- Conducting polymers and applications
- Semiconductor Quantum Structures and Devices
- Physics of Superconductivity and Magnetism
- Quantum Information and Cryptography
- Perovskite Materials and Applications
- Nanowire Synthesis and Applications
Max Planck Institute for Solid State Research
2021-2025
Southwest Medical University
2025
State Key Laboratory on Integrated Optoelectronics
2010-2024
Jilin University
2010-2024
Shenyang Institute of Automation
2021-2024
Chinese Academy of Sciences
2014-2024
University of Science and Technology of China
2013-2024
Chongqing Public Health Medical Center
2024
Central South University
2019-2023
Beijing University of Posts and Telecommunications
2021-2023
Abstract The coherent interaction between quantum emitters and photonic modes in cavities underlies many of the current strategies aiming at generating controlling states. A plasmonic nanocavity provides a powerful solution for reducing effective mode volumes down to nanometre scale, but spatial control atomic scale coupling with single molecular emitter is challenging. Here we demonstrate sub-nanometre over molecule close proximity by monitoring evolution Fano lineshapes Lamb shifts...
Achieving strong coupling between plasmonic oscillators can significantly modulate their intrinsic optical properties. Here, we report the direct observation of ultrafast hot electron transfer from an Au grating array to MoS2 monolayer in regime localized surface plasmons (LSPs) and plasmon polaritons (SPPs). By means femtosecond pump-probe spectroscopy, measured time is approximately 40 fs with a maximum external quantum yield 1.65%. Our results suggest that LSPs SPPs has synergetic effects...
Abstract Electrically driven molecular light emitters are considered to be one of the promising candidates as single-photon sources. However, it is yet demonstrated that electrically emission can indeed generated from an isolated single molecule notwithstanding fluorescence quenching and technical challenges. Here, we report such a well-defined located inside precisely controlled nanocavity in scanning tunneling microscope. The effective suppression plasmonic enhancement allow us achieve...
The manipulation of light in an integrated circuit is crucial for the development high-speed electro-optic devices. Recently, molybdenum disulfide (MoS2) monolayers generated broad interest optoelectronics because their huge exciton binding energy, tunable optical emission, direct electronic band-gap structure, etc. Miniaturization and multifunctionality devices further require light–matter interaction at single-nanoparticle level. strong exciton–plasmon that between MoS2 metallic...
We report angle resolved photoemission experiments on a newly discovered family of kagome metals RV_{6}Sn_{6} (R=Gd, Ho). Intrinsic bulk states and surface the vanadium layer are differentiated from those other atomic sublattices by real-space resolution measurements with small beam spot. Characteristic Dirac cone, saddle point, flat bands lattice observed. Our results establish two-dimensional (2D) as new platform to investigate intrinsic physics.
The dangling-bond-free surfaces of van der Waals (vdW) materials make it possible to build ultrathin junctions. Fundamentally, the interfacial phenomena and related optoelectronic properties vdW junctions are modulated by interlayer coupling effect. However, weak heterostructures limits charge transfer efficiency, resulting in low photoresponsivity. Here, a bilayer MoS2 homogeneous junction is constructed stacking as-grown onto self-healed monolayer MoS2. homojunction barrier ∼165 meV...
Abstract Abnormal elevated levels of cytokines such as interferon (IFN), interleukin (IL), and tumor necrosis factor (TNF), are considered one the prognosis biomarkers for indicating progression to severe or critical COVID‐19. Hence, it is great significance develop devices monitoring their in COVID‐19 patients, thus enabling detecting patients that worsening treat them before they become critically ill. Here, an intelligent aptameric dual channel graphene‐TWEEN 80 field effect transistor...
Abstract Two dimensional excitonic devices are of great potential to overcome the dilemma response time and integration in current generation electron or/and photon based systems. The ultrashort diffusion length exciton arising from ultrafast relaxation low carrier mobility greatly discounts performance devices. Phonon scattering localization crucial understand modulation flux two disorder energy landscape, which still remain elusive. Here, we report an optimized scheme for dominated by...
Van Hove singularity (VHS) has been considered as a driving source for unconventional superconductivity. A VHS in two-dimensional (2D) materials consists of saddle point connecting electron-like and hole-like bands. In rare case, when appears at Fermi level, both conduction can coexist, giving rise to an enhanced density states well attractive component Coulomb interaction electronic pairing. However, this van scenario is often destroyed by incorrect chemical potential or competing...
Abstract Kagome lattice composed of transition-metal ions provides a great opportunity to explore the intertwining between geometry, electronic orders and band topology. The discovery multiple competing that connect intimately with underlying topological structure in nonmagnetic kagome metals A V 3 Sb 5 ( = K, Rb, Cs) further pushes this topic quantum frontier. Here we report new class vanadium-based compounds bilayers, namely 6 4 , which, together compose series generic chemical formula m...
In Kagome metal CsV$_3$Sb$_5$, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi$_3$Bi$_5$ is a Ti-based to parallel CsV$_3$Sb$_5$. Here, we report angle-resolved photoemission experiments first-principles calculations on pristine Cs-doped samples. Our results reveal that the van Hove singularity (vHS) in can be tuned large energy range...
A self-decoupled porphyrin with a tripodal anchor has been synthesized and deposited on Au(111) using different wet-chemistry methods. Nanoscale electroluminescence from single molecules or aggregates realized by tunneling electron excitation. The molecular origin of the luminescence is established vibrationally resolved fluorescence spectra observed. rigid not only acts as decoupling spacer but also controls orientation molecule. Intense can be obtained emission enhancement provided good...
We demonstrate single-photon superradiance from artificially constructed nonbonded zinc-phthalocyanine molecular chains of up to 12 molecules. excite the system via electron tunneling in a plasmonic nanocavity and quantitatively investigate interaction localized plasmon with single-exciton superradiant states resulting dipole-dipole coupling. Dumbbell-like patterns obtained by subnanometer resolved spectroscopic imaging disclose coherent nature coupling associated while second-order photon...
Manipulation of light-matter interaction is critical in modern physics, especially the strong coupling regime, where generated half-light, half-matter bosonic quasiparticles as polaritons are important for fundamental quantum science and applications optoelectronics nonlinear optics. Two-dimensional transition metal dichalcogenides (TMDs) ideal platforms to investigate because their huge exciton binding energy large absorption coefficients. Further studies on exciton-plasmon by combining...
Scanning-tunneling-microscope-induced light emission serves as a powerful approach in revealing and manipulating the optical properties of molecular species, intermolecular energy transfer, plasmon-molecule coupling. Earlier studies have established existence up-conversion electroluminescence diverse situations, but underlying microscopic mechanisms are still under active debate, dominated by triplet-triplet annihilation plasmonic pumping. Here we report on experimental realization from...
Abstract Tracking electron motion in molecules is the key to understanding and controlling chemical transformations. Contemporary techniques attosecond science are able generate trace consequences of this real time, but not space. Scanning tunnelling microscopy, on other hand, can locally probe valence density molecules, cannot alone provide dynamical information at ultrafast timescale. Here we show that, by combining scanning microscopy technologies, quantum electronic coherences induced...
Eu dopant increases the phase transition pressure from wurtzite to rocksalt structure compared with CdS nanoparticles. The PL peaks of Eu<sup>3+</sup> ions can used as probe after quenching CdS.
Atopic dermatitis (AD) is the most common skin disorder in infancy. However, diagnosis and definite significance of infantile AD remains a debated issue.To analyse phenotypes infancy, to establish diagnostic criteria estimate prevalence this condition China.This multicentric study, which 12 locations were chosen from different metropolitan areas China. Following careful complete history-taking examination, was made severity based on SCORAD index determined by local experienced...
Terahertz scanning tunneling microscopy (THz-STM) has enabled studies of ultrafast dynamics in materials down to the atomic scale. However, despite recent advances, more work is needed better understand and quantify subpicosecond THz pulse-induced tunnel currents corresponding THz-STM images nanoscale features on surfaces. Here, we perform a metal surface fully characterize observed current imaging at steps defects using Bardeen model three-dimensional (3D) tip geometry. We show that...
Abstract Strong light-matter interactions in two-dimensional transition metal dichalcogenides (TMDCs) with robust spin-valley degrees of freedom open up the prospect valleytronic devices. A thorough understanding on dynamics valley polarizations strong coupling regime is urgently required. Here, multiple polarized TMDCs-SPPs hybrid systems were constructed by combining monolayer WS 2 flakes to linear, circular, and spiral Ag gratings, resulting linear circular modulation coherent states,...