A5071444038- Terahertz technology and applications
- Superconducting and THz Device Technology
- Gyrotron and Vacuum Electronics Research
- Spectroscopy and Laser Applications
- Semiconductor Quantum Structures and Devices
- Ferroelectric and Piezoelectric Materials
- Photonic and Optical Devices
- Pulsed Power Technology Applications
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Microwave Engineering and Waveguides
- Millimeter-Wave Propagation and Modeling
- Integrated Circuits and Semiconductor Failure Analysis
- Acoustic Wave Resonator Technologies
- Metamaterials and Metasurfaces Applications
- Membrane Separation Technologies
- Dielectric materials and actuators
- Topic Modeling
- Plasmonic and Surface Plasmon Research
- Advanced Chemical Sensor Technologies
- Humic Substances and Bio-Organic Studies
- Natural Language Processing Techniques
- Heavy metals in environment
- Cold Atom Physics and Bose-Einstein Condensates
- Silicon Carbide Semiconductor Technologies
Xi'an University of Technology
2015-2024
Beijing University of Posts and Telecommunications
2024
Yunnan University
2023
Tsinghua University
2023
Beijing University of Technology
2004-2022
Tibet University
2021
Guizhou University
2020-2021
Northeast Forestry University
2021
Xi'an Jiaotong University
2018-2019
China XD Group (China)
2019
We have designed, fabricated, and experimentally verified highly sensitive all-dielectric metasurface THz absorbers (AMTAs) device in the terahertz (THz) frequency range. By designing different structures of resonant, types absorber, which perfect absorption can be realized. The proposed AMTA with simplified designs is demonstrated by single-layer all-silicon array. Furthermore, simulated results changes under refractive index demonstrate that AMTAs act as sensors biochemical application,...
This work simultaneously achieved a large temperature change (Δ<italic>T</italic>, ∼0.70 K) at room and ultra-stable Δ<italic>T</italic>(±1.4% variation between 300 K with 380 in 0.78NaNbO<sub>3</sub>–0.22BaTiO<sub>3</sub>bulk ceramic.
Two types of plasmonic metamaterial absorbers (PMAs) formed from patterned all-dielectric resonators are designed and demonstrated experimentally in the terahertz (THz) range. Both PMAs use a simple grating design on highly N-doped silicon. The first shows broadband absorption with near-perfect peak absorbance at 1.45 THz bandwidth 1.05 for 90% absorbance, while second is dual-band absorber. Experiments show that absorber has two distinct peaks 0.96 1.92 rates 99.7 99.9%, respectively. A...
Abstract Terahertz (THz) near-field microscopy retains the advantages of THz radiation and realizes sub-wavelength imaging, which enables applications in fundamental research industrial fields. In most microscopies, sample surface must be approached by a detector or source, restricts choice. Here, technique was developed based on an air-plasma dynamic aperture, where two mutually perpendicular air-plasmas overlapped to form cross-filament above that modulated incident beam. imaging with...
The photonic energy of terahertz wave is in the same order magnitude as rotational and vibrational levels organic biological macromolecules, so it has unique advantages detecting cells macromolecules. However, life environment, dynamic time scale cell-environment interaction structural conformation change macromolecules are within picosecond to millisecond, water strong absorption wave, which become bottleneck problem for detection by technology. In this article, we developed a set single...
In the last several decades, glow discharge detectors (GDD) have been utilized to detect microwave radiation. Recently, these were used study higher frequencies within terahertz (THz) band of electromagnetic spectrum. Commercial neon lamps can act as GDDs, and their performance at 0.2 THz was investigated. A continuous-wave imaging system with GDD constructed images obtained by a Schottky diode compared. The experimental results indicate that an optimally designed will be efficient, fast,...
Semiconductor material is important to the performance of terahertz (THz) photoconductive antenna. In this paper, we investigate relationship between THz wave emission efficiency, noise, and stability properties fabricated low-temperature (LT) GaAs semi-insulating antennas with same structure, compare their power, signal-to-noise ratio, under experimental conditions. Both theoretical analysis results reveal that LT-GaAs antenna has high low due its short carrier lifetime resistivity, which...
To improve the terahertz (THz) generation of interdigitated photoconductive antenna (iPCA), we demonstrate, for first time, a novel design to pump emission arrays by reconfigurable structured light generated spatial modulator. The is modulated into shapes match antenna's every other electrode gap which has unidirectional bias field. This makes full used power and avoids THz pulses with opposite polarity causes unwanted destructive interference in far-field. Coherent combining efficiencies...
A fast terahertz (THz) continuous-wave detector based on weakly ionized plasma is developed. Its response time can be less than a microsecond according to calculation. By comparing with Schottky diode in THz interferometer, we illustrated that our has faster time, linear responsivity, and higher signal-to-noise ratio.
Terahertz (THz) radiation efficiency of a photoconductive antenna with Schottky contact electrodes is low because the electrical field limited to narrow region close anode. However, in gap an ohmic more uniform, which contributes improving THz generation efficiency. In this paper, semi-insulating (SI)-GaAs antennas and SI-GaAs were fabricated by using AuGeNi alloy Ti/Au electrodes, respectively. The voltage-ampere characteristic distribution two kinds tested. At same condition, intensity...