A5108701104- Laser Material Processing Techniques
- Orbital Angular Momentum in Optics
- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Photonic Crystals and Applications
- Advanced optical system design
- Advanced Fiber Optic Sensors
- Advanced Measurement and Detection Methods
- Photonic and Optical Devices
- Surface Modification and Superhydrophobicity
- Advanced Surface Polishing Techniques
- Optical Coatings and Gratings
- Advanced Fiber Laser Technologies
- Optical Systems and Laser Technology
- Laser-induced spectroscopy and plasma
- Image and Signal Denoising Methods
- Microfluidic and Bio-sensing Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Laser-Ablation Synthesis of Nanoparticles
- Photorefractive and Nonlinear Optics
- Gas Dynamics and Kinetic Theory
- Membrane Separation Technologies
- Micro and Nano Robotics
- Nanofabrication and Lithography Techniques
- Nonlinear Optical Materials Studies
State Key Laboratory on Integrated Optoelectronics
2018-2024
Jilin University
2018-2024
China Academy of Space Technology
2024
Shandong Shierming Eye Hospital
2024
Shijiazhuang University
2024
Shijiazhuang Tiedao University
2024
Heilongjiang Earthquake Agency
2024
Tsinghua University
2020-2023
Shandong Academy of Sciences
2019-2022
Nanchang University
2021
Abstract Nanoscale surface texturing, drilling, cutting, and spatial sculpturing, which are essential for applications, including thin-film solar cells, photonic chips, antireflection, wettability, friction drag reduction, require not only high accuracy in material processing, but also the capability of manufacturing an atmospheric environment. Widely used focused ion beam (FIB) technology offers nanoscale precision, is limited by vacuum-working conditions; therefore, it applicable to...
Inspired by natural creatures, the development of a device that collects water from fog represents an important research direction.
We present here a kind of novel multifunctional ultrathin aluminum foil which consists large-area regular micropore arrays covered with nanostructures.
Abstract Soft robots controlled by different actuation schemes are flourishing owing to the continued development of smart materials. However, most existing actuators powered a single source with predetermined mechanical properties and motion characteristics. Speed, power, efficiency these thus far inferior their conventional counter parts. How preload or alter internal energy distribution trigger rapid kinetic release combined re‐programmability is challenge corresponding solutions will...
Shadow removal aims to restore the image content in shadowed regions. While deep learning-based methods have shown promising results, they still face key challenges: 1) uncontrolled of all shadows, or 2) controllable but heavily relies on precise shadow region masks.To address these issues, we introduce a novel paradigm: prompt-aware removal. Unlike existing approaches, our paradigm allows for targeted from specific subjects based user prompts (e.g., dots, lines, subject masks). This...
Video inpainting aims to fill in corrupted regions of the video with plausible contents. Existing methods generally assume that locations are known, focusing primarily on "how inpaint". This reliance necessitates manual annotation using binary masks indicate "whereto However, these is labor-intensive and expensive, limiting practicality current methods. In this paper, we expect relax assumption by defining a new blind setting, enabling networks learn mapping from inpainted result directly,...
A novel Janus oil barrel with tapered microholes is fabricated for the first time remediation of spill accidents.
We report a systematical study on the liquid assisted femtosecond laser machining of quartz plate in water and under different etching solutions. The ablation features showed better structuring quality improved resolution with 1/3~1/2 smaller as compared those made air. It has been demonstrated that induced periodic structures are present to lesser extent when processed redistribution oxygen revealed strong surface modification, which is related selectivity irradiated regions. Laser KOH HF...
The deformation and instability of embankment slope is one the common engineering diseases in highway engineering. After disaster occurs, it easy to cause huge economic losses casualties. Therefore, great significance value carry out stability evaluation for improving quality ensuring safety con-struction. In view this, this paper took super-high fill project 8th section Cangrong Expressway Rongxian County, Guangxi, China as research object. Firstly, a set three-level evaluating indicator...
We report rapid and mask-free fabrication of a sapphire concave microlens array by combined method femtosecond laser holographic processing wet etching. The features high efficiency, as crater arrays can be created on through parallel manner, the subsequent etching facilitates formation with smooth surface. More importantly, size spacing microlenses well tuned varying distance craters time. Two types 25 40 μm have been successfully fabricated, both which showed good imaging performance. This...
We systematically studied femtosecond laser-inscribed self-organized nanogratings and geometric phase elements such as a polarization diffraction focusing lens Q-plate in sapphire crystal. Besides the void structures observed focus, with periods of 150~300 nm were observed, depending on nanoslit that took role seeding effect by localized light field enhancement. The non-polarized refractive index change birefringence measured values around <mml:math...
We demonstrate a versatile method for fast and flexible fabrication of either one or an array microlenses. Multi-foci axial intensity distribution generated by phase pattern displayed on spatial light modulator irradiates silica, causing ablation its internal modification. The following wet etching step defines the diameter r, while radius curvature R (hence, focal length f) is maintained same. As result, numerical aperture NA=r/f changes from 0.2 to 0.4 same pulse energy (but different...
A one-step method for synthesizing nano-diamonds (NDs), femtosecond pulsed laser ablation, of bulk diamond in DI water is reported. The mean size NDs 3.0 nm observed by TEM. UV-Vis absorption spectrum reveals that there are two peaks NDs. For prepared NDs, it can be seen from emission dual occurs under the excitation either 260 nm or 280 nm, while disappears after surface passivation. Moreover, intensity visible blue fluorescence emitted significantly enhanced passivated In addition, found...
Herein, well-dispersed cobalt phosphide (CoP) electrocatalysts embedded in nitrogen-doped carbon (CoP@NC) were developed as an iodine host for zinc batteries. Benefiting from the high electrical conductivity of matrix and strong interaction well efficient electrocatalytic activity CoP with species, achieved rapid conversion while effectively suppressing formation polyiodides dendrites.
Birefringence of 3 × 10 - is demonstrated inside cross-sectional regions 100 μ m, inscribed by axially stretched Bessel-beam-like fs-laser pulses along the c-axis sapphire. A high birefringence and retardance λ / 4 at mid-visible spectral range (green) can be achieved using beams with axial extension 30-40 m. Chosen conditions laser-writing ensure that there are no formations self-organized nano-gratings. This method adopted for creation polarization optical elements fabrication spatially...
Laser cutting of semiconductor wafers and transparent dielectrics has become a dominant process in manufacturing industries, encompassing wide range applications from flat display panels to microelectronic chips. Limited by the diffraction barrier imposed on beam width its longitudinal extend laser focus, trade-off must be made between accuracy aspect ratio conventional processing, with typically approaching micron order $10^2$. Herein, we propose method circumvent this limitation. It is...
Here a continuous axial-spiral phase microplate (CAsPP), based on combining logarithmic axicon and spiral plate, was proposed for generating high-quality higher-order Bessel vortex beams. The novel optical component implemented via femtosecond laser direct writing possesses compact geometry unique properties. CAsPP with diameter of 80 µm controllable long focus ranging from 50 to 600 exhibits good self-healing ability after free transmission about 45 µm. Unique properties were demonstrated...
The nanoresolution of geometric phase elements for visible wavelengths calls a flexible technology with high throughout and free from vacuum. In this article, we propose high-efficiency simple manufacturing method the fabrication femtosecond–laser direct writing (FsLDW) thermal annealing by combining advantages processing smoothing effect. By using femtosecond laser at wavelength 343 nm circular polarization, free-form nanogratings period 300 170-nm-wide grooves were obtained in 50 s...
In this paper, we demonstrate that the superposition of two vortex beams with controlled topological charges can be realized by integrating holographic plates blazed grating. First, plate grating was designed and fabricated laser direct writing for generating well-separated beam. Then, relationship between periods discrete angles systemically investigated. Finally, through setting angle different revolving direction plates, composite fork-shaped field in a particular position. The (l = 1, 0,...
Optical systems provide a new and practical platform for studying Bloch oscillations. This study investigates the fundamental-mode propagation of polarization-dependent By using three-dimensional properties femtosecond laser direct writing, we fabricate polymer-based gradient waveguide array determine oscillations under different polarization inputs by birefringence equivalent refractive index, thus exhibiting period. Our results new, to best our knowledge, paradigm two-dimensional optical...
We explored how leader‐follower dyadic communication influences leader‐member exchange (LMX) quality, and LMX in turn, followers’ job satisfaction task performance. Paired data were collected from 205 dyads China. conducted polynomial regression response surface analysis to test our hypotheses. Results showed that quality was higher when the leader’s style fitted of follower, each more closely. Furthermore, effects asymmetrical misfit identified situations where followers had better work...