A5000861317- GaN-based semiconductor devices and materials
- Semiconductor Quantum Structures and Devices
- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Ga2O3 and related materials
- Semiconductor materials and devices
- Conducting polymers and applications
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Innovative Energy Harvesting Technologies
- Advanced Surface Polishing Techniques
- Adhesion, Friction, and Surface Interactions
- Optical Coatings and Gratings
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Advanced Semiconductor Detectors and Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Electrical Contact Performance and Analysis
- Quantum Dots Synthesis And Properties
- Dielectric materials and actuators
- Semiconductor Lasers and Optical Devices
- Advanced Memory and Neural Computing
- Supercapacitor Materials and Fabrication
- Dark Matter and Cosmic Phenomena
Hefei University of Technology
2022-2025
Institute of Physics
2024
National University of Defense Technology
2024
Chongqing University
2007-2023
Xidian University
2023
Beijing Institute of Technology
2018-2021
Guilin University of Electronic Technology
2015
Tao Systems (United States)
2013
National Taiwan University of Science and Technology
2011
National Yang Ming Chiao Tung University
2003-2009
Abstract Wind energy is one of the most promising and renewable sources; however, owing to limitations device structures, collecting low-speed wind by triboelectric nanogenerators (TENGs) still a huge challenge. To solve this problem, an ultra-durable highly efficient windmill-like hybrid nanogenerator (W-HNG) developed. Herein, W-HNG composes coupled TENG electromagnetic generator (EMG) adopts rotational contact-separation mode. This unique design efficiently avoids wear friction materials...
A fluorinated polyimide film is synthesized toward the transparent triboelectric nanogenerator applied on touch screen surface to convert mechanical energy into electrical energy.
Abstract Material strain is one of the factors affecting contact electrification. Previous works have investigated influence polymer on electrification from perspective material transfer by means experimental methods. However, detailed electron mechanism, which most fundamental form still unclear. In this work, effect and its mechanism polydimethylsiloxane (PDMS) tensile with polytetrafluoroethylene (PTFE) are via first-principles calculations. The results show that number electrons...
This work presents a new low-voltage, magnetic-less ion pump that utilizes the pyroelectric principle. Both electron emission and high-voltage to realize an are supplied by material, whose activation only requires 5 V drive voltage. Structure optimization of is carried out in order reduce outgassing during operating period achieve better pumping performance. The characteristics optimized investigated simulation experiment, its performance experimentally tested speed calculated using...
Photoluminescence (PL) measurements were performed on cubic GaN films grown GaAs(100) substrates by metalorganic vapor phase epitaxy. The show a high optical quality that enables us to study the PL spectra in detail. From temperature and excitation intensity dependence, emission lines at 3.274 3.178 eV assigned excitonic transition donor–acceptor pair transition, respectively. We also observed two additional 3.088 3.056 eV. An 3.216 with full width half maximum value as small 73 meV was 300 K.
Abstract Triboelectric nanogenerators (TENGs) and dielectric elastomer generators (DEGs) are potentially promising energy conversion technologies, but they still have limitations due to their own intrinsic characteristics, including the low output of TENGs caused by air breakdown effect, external polarization voltage requirement for DEGs, which severely limit practical applications. Herein, coupling TENG with DEG is proposed build a mutual beneficial self‐excitation hybrid generator (named...
Ag/tungsten disulfide (WS2)–polyvinylpyrrolidone (PVP)/Cu memristors based on monolayer WS2 nanosheets and polyvinylpyrrolidone (PVP) nanocomposites were fabricated, the influence of PVP content switching behaviors was investigated. The results indicate that WS2–PVP show write-once read-many times (WORM) memory behavior. Remarkable resistive such as a low operating voltage (VSET < 1 V), high ratio (>103), good endurance (>100 cycles), data retention time (>200 s)...
GaN films were grown on 3C-SiC substrates by metalorganic vapor phase epitaxy (MOVPE) using 1,1-dimethylhydrazine (DMHy) as the N source. The crystal structure was strongly affected both growth temperature and V/III ratio. At 600° C, only hexagonal with their c -axis perpendicular to substrate surface grown. 800° relatively high ratios resulted in of oriented [111] direction while cubic obtained at lower ratios. origin [111]-oriented is also discussed.
Highly luminescent GaAsN alloy films have been successfully obtained with N concentrations up to 3.1% by metalorganic vapor phase epitaxy (MOVPE). The band-gap bowing parameter estimated from the photoluminescence (PL) peak energy is not constant but dependent on concentration; 24.0 eV for < 1% and 17.0 > at 20 K, 22.4 14.5 room temperature. From characteristic features of luminescence properties, band-edge states are found be much localized below conduction band edge, emission process low...
We report on the growth of high quality cubic GaN films GaAs (100) substrates by low pressure metalorganic vapor phase epitaxy. The exhibit a smooth surface which is free from cracks. X-ray diffraction shows nature films. rocking curve with ω scan that crystal improves markedly increasing temperatures. Photoluminescence measurements confirm full width at half maximum excitonic emission as narrow 70 meV 300 K.
The ATIC balloon-borne experiment measures the energy spectra of elements from H to Fe in primary cosmic rays about 100 GeV TeV. is comprised a fully active bismuth germanate calorimeter, carbon target with embedded scintillator hodoscopes, and silicon matrix that used as main charge detector. produces good resolution for protons helium but only partial heavier nuclei. In present paper, was improved backgrounds were reduced region Be Si by using upper layer hodoscope an additional flux...
Bonding layers, serving as the strain transmission mediums, may bring undesirable effects to sensing properties of fiber Bragg grating (FBG) sensors during their fatigue process. To analyze sensitivity and reflected spectrum FBG in different stages bonding sensitivities were derived according transfer models. Resorting T-matrix formalism, affected spectra stimulated. Theoretical analysis results show that there is a gradual decline stage crack initiation, significant distortions emerge...
Noble metal nanoantenna could effectively enhance light absorption and increase detection sensitivity. In this paper, we propose a periodic Ag diamond array to the of thin-film solar cells improve sensitivity via localized surface plasmon resonance. The effect arrays on enhancement is theoretically investigated using finite difference time domain (FDTD) method with manipulating spectral response by geometrical parameters nanoantennas. A maximum factor 1.51 has been achieved in study....
Abstract With the rapid development of robotics, intelligent robots have gradually entered human daily life and take responsibility for specific tasks, which brings tremendous convenience to people’s lives. In indoor places such as restaurants, hotels, logistics warehouses, SLAM technology can guide mobile complete delivery tasks. Aiming at solving problems particle degradation in traditional RBPF-based two-dimensional algorithm, our algorithm firstly proposes an improved filter method based...