A5043874208- Gyrotron and Vacuum Electronics Research
- Data Quality and Management
- Topic Modeling
- Terahertz technology and applications
- Photocathodes and Microchannel Plates
- Particle Accelerators and Free-Electron Lasers
- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Advanced Sensor and Control Systems
- Advanced Measurement and Detection Methods
- Particle accelerators and beam dynamics
- Web Data Mining and Analysis
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Optical Systems and Laser Technology
- Advanced Graph Neural Networks
Shenyang Ligong University
2024
Tsinghua University
2017-2018
Smith–Purcell radiation (SPR) is electromagnetic generated by free electrons passing over a periodic grating. Here, having the electron beam pass through 30 nm wide slots in an Al grating greatly shortens SPR wavelength, and directional, ultra-broadband, tunable light source spanning λ0≈230–1100 nm demonstrated. By adjusting energy, backward can be tuned λ0=251–340 nm. This work extends wavelength of from previously reported 320 nm to 230 nm, provides means realizing integrated free-electron...
Knowledge graphs in the field of network security can integrate diverse, heterogeneous, and fragmented data, further explore relationships between provide support for deep analysis. Currently, there is sparse information knowledge graphs. The limited provided by traditional text encoding models leads to insufficient reasoning ability, greatly restricting development this field. Starting from encoding, paper first addresses issue inadequate capabilities using a learning model assistance. It...
Smith–Purcell radiation (SPR) is the electromagnetic wave generated by free electrons passing above a diffraction grating, and it has played an important role in free-electron light sources particle accelerators. Orbital angular momentum (OAM) new degree of freedom that can significantly promote capacity information carried electro-magnetic beam. In this paper, we propose integrable method for generating vortex (VSPR), namely, SPR carrying OAM, having bunches pass on planar holographic...
Named-Entity Recognition (NER) as a core task in Natural Language Processing (NLP) aims to automatically identify and classify specific types of entities from unstructured text. In recent years, the introduction Transformer architecture its derivative BERT model has pushed performance NER unprecedented heights. However, these models often have high requirements for computational power memory resources, making it difficult train deploy them on small computing platforms. Although ALBERT...
We demonstrated high order Smith-Purcell radiation in deep ultraviolet wavelength region. Having free electrons passing through a slot 2μm-long two-dimensional Aluminum grating, the with as short 237nm has been derived.
We demonstrate an on-chip integrated Cherenkov radiation (CR) emitter, in which the no-threshold CR could be realized and a broadband is observed with electron energy of only 0.25–1.4keV.