A5073212115- Advanced X-ray Imaging Techniques
- Digital Holography and Microscopy
- Optical measurement and interference techniques
- Topological Materials and Phenomena
- Laser-Plasma Interactions and Diagnostics
- Graphene research and applications
- 2D Materials and Applications
- Laser Material Processing Techniques
- Advanced Electron Microscopy Techniques and Applications
- Optical Systems and Laser Technology
- Quantum and electron transport phenomena
- Adaptive optics and wavefront sensing
- Laser-Matter Interactions and Applications
- Astrophysical Phenomena and Observations
- Crystallography and Radiation Phenomena
- Advanced Optical Sensing Technologies
- Quantum, superfluid, helium dynamics
- Electrocatalysts for Energy Conversion
- Plant Micronutrient Interactions and Effects
- Inorganic Chemistry and Materials
- Advanced Optical Imaging Technologies
- Functional Brain Connectivity Studies
- Quantum many-body systems
- Atherosclerosis and Cardiovascular Diseases
- Cold Atom Physics and Bose-Einstein Condensates
Huaian First People’s Hospital
2025
First Hospital of Jilin University
2023-2024
Shanghai Institute of Optics and Fine Mechanics
2014-2024
Jilin University
2023-2024
Jingdezhen Ceramic Institute
2024
Fujian University of Technology
2023
Zhoukou Normal University
2023
Hangzhou Dianzi University
2023
Affiliated Hospital of Youjiang Medical University for Nationalities
2023
Tianjin University
2022-2023
Abstract The recent discovery of a Weyl semimetal in TaAs offers the first fermion observed nature and dramatically broadens classification topological phases. However, it has proven challenging to study rich transport phenomena arising from emergent fermions. series Mo x W 1− Te 2 are inversion-breaking, layered, tunable semimetals already under as promising platform for new electronics recently proposed host Type II, or strongly Lorentz-violating, Here we report at =25%. We use pump-probe...
ZrSiS materials show unsaturated magnetoresistance until a magnetic field of 53 T with butterfly-shaped angular dependence. Intense Shubnikov-de Haas oscillations resolve bulk Dirac cone nontrivial Berry phase. Combined angle-resolved photoemission spectroscopy and theoretical calculations, is proved to be material both surface bands. As service our authors readers, this journal provides supporting information supplied by the authors. Such are peer reviewed may re-organized for online...
Members of the Mo${}_{x}$W${}_{1-x}$Te${}_{2}$ series are predicted to be Weyl semimetals, hosting type-II fermions, which have yet experimentally realized and unusual because they strongly violate Lorentz invariance. Crucially, points in this system sit above Fermi level. Here, authors show that for a cone, although not type-I if point is level, then it's necessary see band structure level observe topological arc. The also discover pump-probe angle-resolved photoemission beautifully...
An optical alignment and a corresponding reconstruction algorithm are proposed to realize single shot Ptychographical Iterative Engine (PIE). Multiple light beams generated by cross grating used illuminate the specimen, resulting diffraction patterns formed on detector plane each beam recorded simultaneously. The modulus phase images properly reconstructed with standard PIE algorithm. method omits needs for mechanical x-y scanning of hence dramatically reduces data acquisition time.
High-mobility (Smx Bi1-x )2 Se3 topological insulators (with x = 0.05) show a Curie temperature of about 52 K, and the carrier concentration Fermi wave vector can be manipulated by intentional Te introduction with no significant influence on temperature. The origin ferromagnetism is attributed to trivalent Sm dopant, as confirmed X-ray magnetic circular dichroism first-principles calculations. order 10(19) cm(-3) mobility reach 7200 cm(2) V(-1) s(-1) pronounced Shubnikov-de Haas oscillations.
A red nanowire LED with an InGaN bulk active region, directly grown on a p-Si (111) substrate, is demonstrated. The exhibits relatively good wavelength stability upon increasing injection current and narrowing of the linewidth without quantum confined Stark effect. Efficiency droop sets in at high current. output power external efficiency are 0.55 mW 1.4% 20 mA (20 A/cm2) peak 640 nm, reaching 2.3% 70 625 nm. operation substrate results large carrier currents due to naturally formed tunnel...
Ultrafast imaging can capture the dynamic scenes with a nanosecond and even femtosecond temporal resolution. Complementarily, phase provide morphology, refractive index, or thickness information that intensity cannot represent. Therefore, it is important to realize simultaneous ultrafast for achieving as much possible in detection of scenes. Here, we report single-shot intensity- phase-sensitive compressive sensing-based coherent modulation technique, shortened CS-CMUI, which integrates...
A single shot multi-wavelength phase retrieval method is proposed by combining common coherent modulation imaging (CMI) and a low rank mixed-state algorithm together. radiation beam consisting of illuminated on the sample to be observed, exiting field incident random plate form speckle patterns, which incoherent superposition diffraction patterns each wavelength. The complex amplitude including both modulus wavelength can reconstructed simultaneously from recorded intensity using algorithm....
Cracking is one of the main problems in concrete structures and affected by various parameters. The step-by-step laboratory method, which includes casting specimens, curing for a certain period, testing, remains source worry terms cost time. Novel machine learning methods anticipating behavior raw materials on ultimate output are being introduced to address difficulties outlined above such as excessive consumption time money. This work estimates splitting-tensile strength containing recycled...
A method based on highly tilted illumination and non-paraxial iterative computation is proposed to improve the image quality of single-shot 3D ptychography. thick sample illuminated with a cluster laser beams that are separated by large enough angles record each diffraction pattern distinctly in single exposure. structure accurately reconstructed from recorded patterns using modified multi-slice algorithm process illumination. Sufficient number noticeably low crosstalk enhances fidelity...
Wavefront control is a significant parameter in inertial confinement fusion (ICF). The complex transmittance of large optical elements which are often used ICF obtained by computing the phase difference illuminating and transmitting fields using Ptychographical Iterative Engine (PIE). This can accurately effectively measure with irregular surface profiles, otherwise not measurable commonly interferometric techniques due to lack standard reference plate. Experiments done Continue Phase Plate...
Classic interferometry was commonly adopted to realize ultrafast phase imaging using pulsed lasers; however, the reference beam required makes optical structure of system very complex, and high temporal resolution reached by sacrificing spatial resolution. This study presents a type single-shot multiplexed coherent diffraction technique with both resolutions simple setup, nanosecond femtosecond scale can be realized lasers different pulse durations. applies algorithm avoid data division in...
Abstract The properties of a series phase measurement techniques, including interferometry, the Hartmann–Shack wavefront sensor, knife-edge technique, and coherent diffraction imaging, are summarized their performance in high power laser applications is compared. advantages, disadvantages, application ranges each technique discussed.
Weyl semimetals have sparked intense research interest, but experimental work has been limited to the TaAs family of compounds. Recently, a number theoretical works predicted that compounds in Mo$_x$W$_{1-x}$Te$_2$ series are semimetals. Such proposals particularly exciting because quasi two-dimensional crystal structure well-suited many transport experiments, while WTe$_2$ and MoTe$_2$ already subject numerous for device applications. However, with available ARPES techniques it is...
A coherent-modulation-imaging-based (CMI) algorithm has been employed for on-shot laser beam diagnostics in high-power facilities, where high-intensity short-pulsed lasers from terawatt to petawatt are designed realize inertial confinement fusion (ICF). single-shot intensity measurement is sufficient wave-front reconstruction, both the near-field and far-field at same time. The iterative reconstruction process computationally very efficient was completed dozens of seconds by additional use a...
A single-shot phase retrieval algorithm based on a random aperture and partially saturated diffraction pattern is proposed. The in the area could be retrieved during iterative process, which circumvents problem of limited dynamic range detector. Besides, easier to manufactured if accuracy high enough, design value used directly for iterations. It has potential adapted different wavelengths without additional transmission measurement wave modulator. validity been demonstrated by simulations...
We propose a simple single-shot spatiotemporal measurement technique called coherent modulation imaging for the spatio-spectrum (CMISS), which reconstructs full three-dimensional high-resolution characteristics of ultrashort pulses based on frequency-space division and imaging. demonstrated it experimentally by measuring amplitude phase single pulse with spatial resolution 44 µm accuracy 0.04 rad. CMISS has good potential high-power ultrashort-pulse laser facilities can measure even...
An exact modal decomposition method plays an important role in revealing the characteristics of a few-mode fiber, and it is widely used various applications ranging from imaging to telecommunications. Here, ptychography technology successfully achieve fiber. In our method, complex amplitude information test fiber can be recovered by ptychography, then weight each eigenmode relative phase between different eigenmodes easily calculated orthogonal projection operations. addition, we also...