A5052175623- 2D Materials and Applications
- Graphene research and applications
- Perovskite Materials and Applications
- MXene and MAX Phase Materials
- Silicon and Solar Cell Technologies
- Multiferroics and related materials
- Quantum Dots Synthesis And Properties
- Advanced oxidation water treatment
- Advanced Photocatalysis Techniques
- Electronic and Structural Properties of Oxides
- Graphene and Nanomaterials Applications
- Supramolecular Self-Assembly in Materials
- Thin-Film Transistor Technologies
- Luminescence and Fluorescent Materials
- Advanced Sensor and Energy Harvesting Materials
- Magnetic properties of thin films
- Advanced Materials and Mechanics
- Advanced Surface Polishing Techniques
- Advanced biosensing and bioanalysis techniques
- Magnetic and transport properties of perovskites and related materials
- Ferroelectric and Piezoelectric Materials
- Gear and Bearing Dynamics Analysis
- Molecular Junctions and Nanostructures
- Machine Fault Diagnosis Techniques
- Photonic Crystals and Applications
Shanghai University
2008-2025
Rice University
2023-2025
Harbin University of Science and Technology
2024-2025
Harbin Institute of Technology
2017-2022
Pennsylvania State University
2021-2022
Columbia University
2020-2022
Huaqiao University
2020
Nanchang Institute of Technology
2019
Shanghai Institute of Applied Physics
2009
Larger monolayers with gold tapes Although the exfoliation of materials such as transition metal dichalcogenides produces high-quality electronic low defect densities, size is limited to micrometer scale. Liu et al. modified this method by creating atomically flat layers on polymer supports. The strong van der Waals adhesion layer allowed be exfoliated centimeter Multilayers could reassembled artificial structures, a MoSe 2 /WSe single-crystal bilayer twist angle chosen quench intralayer...
Charge separated interlayer excitons in transition metal dichalcogenide (TMDC) heterobilayers are being explored for moiré exciton lattices and condensates. The presence of permanent dipole moments the poorly screened Coulomb interaction make many body interactions particularly strong excitons. Here we reveal two distinct phase transitions MoSe2/WSe2 heterobilayer using time spatially resolved photoluminescence imaging: from trapped moiré-potential to modestly mobile gas as density increases...
Abstract Excitons play a dominant role in the optoelectronic properties of atomically thin van der Waals (vdW) semiconductors. These excitons are amenable to on-demand engineering with diverse control knobs, including dielectric screening, interlayer hybridization, and moiré potentials. However, external stimuli frequently yield heterogeneous excitonic responses at nano- meso-scales, making their spatial characterization conventional diffraction-limited optics formidable task. Here, we use...
Abstract The electronic properties of 2D materials play a critical role in determining their potential for device applications. Despite rapid developments semiconductors, studies fundamental parameters, including the gap and ionization energy, are limited, with significant discrepancies reported values. study focuses on tungsten disulfide (WS₂) investigates structure films comprising an increasing number layers deposited two different methods: direct synthesis via metal–organic chemical...
Optical spectroscopy, a noninvasive molecular sensing technique, offers valuable insights into material characterization, molecule identification, and biosample analysis. Despite the informativeness of high-dimensional optical spectra, their interpretation remains challenge. Machine learning methods have gained prominence in spectral analyses, efficiently unveiling analyte compositions. However, these still face challenges interpretability, particularly generating clear feature importance...
The optical properties of transition-metal dichalcogenides have previously been modified at the nanoscale by using mechanical and electrical nanostructuring. However, a clear experimental picture relating local electronic structure with emission in such structures has so far lacking. Here, we use combination scanning tunneling microscopy (STM) near-field photoluminescence (nano-PL) to probe single nanobubbles bilayer heterostructures WSe2 on MoSe2. We show from spectroscopy that there are...
Abstract The rapid development of low energy dissipation spintronic devices has stimulated the search for air‐stable 2D nanomaterials possessing room‐temperature ferromagnetism. Here experimental realization Mo 4/3 B 2 nanosheets is reported with intrinsic ferromagnetic characteristics by vacancy engineering. These are synthesized etching bulk MAB phase (Mo 2/3 Y 1/3 ) AlB into in ZnCl molten salt. show robust properties, a saturation magnetic moment 0.044 emu g −1 at 300 K, while...
The working conditions of planetary gearboxes are complex, and their structural couplings strong, leading to low reliability. Traditional deep neural networks often struggle with feature learning in noisy environments, reliance on one-dimensional signals as input fails capture the interrelationships between data points. To address these challenges, we proposed a fault diagnosis method for that integrates Markov transition fields (MTFs) residual attention mechanism. MTF was employed encode...
Abstract Optical spectroscopy is indispensable for research and development in nanoscience nanotechnology, microelectronics, energy, advanced manufacturing. Advanced optical tools often require both specifically designed high-end instrumentation intricate data analysis techniques. Beyond the common analytical tools, deep learning methods are well suited interpreting high-dimensional complicated data. They offer great opportunities to extract subtle information about properties of materials...
2D heterostructures have garnered tremendous attention for potential applications in electronics and optoelectronics. Heterostructures can be constructed by assembling individual atomically thin layers of materials into integrated devices, which involves three primary degrees freedom (DOFs), i.e., Lego‐like basic building blocks, out‐of‐plane stacking order, in‐plane twist‐angle alignment. By steering the DOFs materials, devices structures such as artificial Shockley junction, quantum wells,...
The electronic and optical properties of two-dimensional materials can be strongly influenced by defects, some which find significant implementations, such as controllable doping, prolonged valley lifetime, single-photon emissions. In this work, we demonstrate that defects created remote N2 plasma exposure in single-layer WS2 induce a distinct low-energy photoluminescence (PL) peak at 1.59 eV, is sharp contrast to caused Ar plasma. This PL has critical requirement on the dose, strongest for...
With the continual increasing application requirements of broadband vibration energy harvesters (VEHs), many attempts have been made to broaden bandwidth. As compared adopted only a single approach, integration multi-approaches can further widen operating Here, novel two-degree-of-freedom cantilever-based triboelectric nanogenerator is proposed obtain high bandwidth by integrating multimodal harvesting technique and inherent nonlinearity broadening behavior due contact between surfaces. A...