A5000820398- Gyrotron and Vacuum Electronics Research
- Terahertz technology and applications
- Pulsed Power Technology Applications
- Microwave Engineering and Waveguides
- Particle accelerators and beam dynamics
- Antenna Design and Analysis
- 2D Materials and Applications
- Acoustic Wave Resonator Technologies
- Powdery Mildew Fungal Diseases
- Topological Materials and Phenomena
- Near-Field Optical Microscopy
- Photonic and Optical Devices
- Diamond and Carbon-based Materials Research
- Reproductive Biology and Fertility
- Advancements in Semiconductor Devices and Circuit Design
- Remote Sensing and Land Use
- Advanced Nanomaterials in Catalysis
- Laser Design and Applications
- Sperm and Testicular Function
- Electronic and Structural Properties of Oxides
- Spectroscopy and Chemometric Analyses
- Semiconductor materials and devices
- Full-Duplex Wireless Communications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Metamaterials and Metasurfaces Applications
Anhui East China Institute of Optoelectronic Technology (China)
2015-2025
Wuhu Institute of Technology
2024
China Academy of Launch Vehicle Technology
2019
Xi'an Jiaotong University
2018
Northwest Institute of Nuclear Technology
2018
The n-TiO2 nanoballs-sticks (TiO2 NBSs) were successfully deposited on p-lightly boron-doped diamond (LBDD) substrates by the hydrothermal method. temperature-dependent optoelectronic properties and carrier transport behavior of NBS/p-LBDD heterojunction investigated. photoluminescence (PL) detected four distinct emission peaks at 402 nm, 410 429 456 nm that have potential to be applied in white-green light-emitting devices. results I-V characteristic exhibited excellent rectification...
Abstract A high performance continuous-wave (CW) backward wave oscillator (BWO) with planar slow structure (SWS) and sheet electron beam in Y-band is presented this paper. The mode selection discussed by studying the dispersion curve of SWSs, distributions electric field, particle-in-cell simulation results, showing that designed BWO operates fundamental TM 11 . SWSs are fabricated using UV-LIGA technology processing error less than 0.003 mm. gun can provide 2.5 mm × 0.14 maximum current...
A high performance continuous-wave (CW) clinotron with a sheet electron beam at 0.26 THz is presented in this paper. The mode selection discussed by studying the dispersion curve of frequency structure, distribution electric field, coupling impedance, and particle-in-cell simulation result, showing that designed operates fundamental TM10. planar comb gratings are fabricated using wire electrical discharge machining technology processing error less than 0.005 mm. gun can provide 2.5 mm × 0.14...
Utilizing in situ Raman spectroscopy, resistivity, and Hall-effect measurements, we conducted an extensive investigation on the continuous electronic phase transitions transport properties of two-dimensional (2D) tellurium (Te) under high pressure at room low temperature (80–300 K). The distinguishable decrease A1 mode's full width half maximum trigonal (Te-I) indicated transition 2.2 GPa. following experiments located Lifshitz semiconductor-semimetal 0.9 1.9 GPa, respectively, was also...
In this paper, we propose an extended interaction oscillator (EIO) operating with a high-order mode in the Y band. Compared to conventional EIO fundamental mode, it operates TM31 mode. Since inner surface of is much larger, which increases power capacity device. The difficulty manufacturing such enlarged cavity thereby mitigated. By optimizing multi-gap structure, designing magnet subsystem, and preparing e-gun configuration confirmed. Finally, through particle-in-cell simulations,...
In order to develop an extended interaction klystron (EIK) with high performance in the terahertz range, staggered-tuned structure is numerically studied, manufactured, and measured. First, circuit optimized get strength avoid mode overlapping output cavity, ensuring efficiency stability for device. Then clustered cavities are staggered tuned improve its bandwidth. The particle-in-cell (PIC) code employed research performances of device under different conditions accordingly practicable...
This study presents the development of a continuous wave diffraction radiation oscillator utilizing sheet electron beam. The comprises slow-wave system formed by double-comb gratings, an open resonant cavity consisting spherically curved mirror and cylindrically mirror, beam generated diode gun. A permanent magnetic focusing stabilizes transmission within system. Through combination mechanical electronic tuning, generates stable signal output in TEM00q mode. oscillator's frequency tuning...
The sperm tail is related to motility, which a prerequisite for fertilization. At present, electron microscopy commonly used observe the ultrastructure of tail, requires sectioning, coating, and other treatments. This belongs injury based observation. article uses terahertz near-field technology directly perform non-destructive imaging can internal axonal structure mitochondrial sheath.
The fingerprint technology of traditional Chinese medicine is a more effective method to ensure the quality stability and control medicine. As core medicine, terahertz time-domain spectroscopy (THz-TDS) very suitable for detection In this paper, free-space transmission system developed by us was used detect compound banlangen tablets. absorption spectra refractive index tablets with different thicknesses, manufacturers batches were studied. results showed that: difference in thickness, batch...
A continuous wave backward oscillator is studied in this paper. The design of the slowing system completed through theoretical calculation and numerical simulation, manufactured precision machining. In order to improve output power electron tube, a high resistance diode gun used produce sheet beam with emission current density. test shows that developed BWO can work frequency range 250 ~ 310 GHz, 20 mW 42 mW.
Two types of compact, THz radiation sources are developed in An Hui Huadong Photoelectric Technology Institute recently. One is Oroton and the other backward wave oscillator (BWO). This paper will give main technical characteristics these two sources.
Multiple conductor method is used to calculate the attenuation of attenuator-coated helix slow-wave structure. The results have high-accuracy for practice and coincide with experimental data.
In this paper, two transmission terahertz time-domain spectral systems (THz-TDS) are developed, their difference is the off-axis parabolic mirror. Based on THz- TDS, influence of sample fixture, sapphire thickness and mirror dielectric constant window studied, transmittance 0.5 mm 66.0%.
The quality and efficacy of bupleurum are affected by different natural environments such as soil, climate water source in places. This article conducts spectral detection research on radix bupleuri from regions based ultraviolet to mid infrared spectroscopy technology. fingerprint feature maps were obtained. By analyzing comparing the regions, it was found that characteristic peaks obvious consistency is good. There certain differences optical density, densities can be used distinguish...
The nucleus is located inside the head of human sperm and related to fertilization ability sperm. Currently, commonly used method electron microscopy observation for sectioning imaging, which belongs scope destructive imaging. Alternatively, Observing under an microscope after staining, It cumbersome operate. This article based on near-field imaging technology in terahertz technology, utilizing penetration nanoscale accuracy directly observe near field unprocessed sperm, achieving...
Real-time multiple trace gas monitoring instrument, based on photoacoustic spectroscopy has an important application in space capsule. The quantum cascade laser (QCL) is used instrument. However, the requirement of short current pulse edge and high repetition frequency makes design driver QCL great challenge. long heat fast widen its linewidth. On other hand, low rate does not meet requirements measurement. In this work, we improve capacitor charge-discharge circuit a new driver. frequency....