Query：
学者姓名：刘世炳
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-Author
Language
Clean All
Abstract ：
In this paper, using laser direct writing technology, a femtosecond laser was used to process a periodic grating structure on a 99.99% tungsten target. The specific parameters of the laser are as follows: a center wavelength of 800 nm, pulse width of 35 fs, repetition rate of 1 kHz, and maximum single pulse energy of 3.5 mJ. The surface morphology of the samples was characterized and analyzed using a scanning electron microscope (SEM, Coxem, Republic of Korea) and atomic force microscope (AFM, Being Nano-Instruments, China). The thermal radiation infrared spectrum of the tungsten target with grating structures was measured using a Fourier transform infrared spectrometer (Vertex 70, Bruker, Germany). The results show that as the laser fluence increases, the depth of the groove, the width of the nanostructure region, and the width of the direct writing etching region all increase. The peak thermal radiation enhancement appears around the wavenumber of 900 cm-1 when the laser fluence is sufficient. Additionally, its intensity initially increases and then decreases as the laser fluence increases. If the grating period is too large, the impact on thermal radiation is not clear. The heating temperature significantly affects the intensity of thermal radiation but does not have a noticeable effect on the position of thermal radiation peaks. Moreover, the relative weighting of different wavenumbers changes as the temperature increases.
Keyword ：
direct writing processing direct writing processing thermal radiation thermal radiation femtosecond laser femtosecond laser grating structure grating structure
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Guo, Ruxue , Zhou, Ping , Zhang, Wanyun et al. Study on the Thermal Radiation Characteristics of Tungsten Surface Grating Structures Prepared by Femtosecond Laser Direct Writing [J]. | COATINGS , 2024 , 14 (8) . |
| MLA | Guo, Ruxue et al. "Study on the Thermal Radiation Characteristics of Tungsten Surface Grating Structures Prepared by Femtosecond Laser Direct Writing" . | COATINGS 14 . 8 (2024) . |
| APA | Guo, Ruxue , Zhou, Ping , Zhang, Wanyun , Song, Haiying , Liu, Shibing . Study on the Thermal Radiation Characteristics of Tungsten Surface Grating Structures Prepared by Femtosecond Laser Direct Writing . | COATINGS , 2024 , 14 (8) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
For linearly polarized femtosecond laser-induced periodic nanostructures on a metal surface, the underlying physics of self-formation patterns is yet to be fully explained. We demonstrated here that the stabilized periodic interface electrostatic field (Coulomb field) arising from the surface phase-locking resonant dominates the self -formation of ripple structures. The kinetics of ultrafast laser ablation on solid surface were discussed. The threshold fluence and upper limit fluence for self-formation of ripple structures were calculated. The underlying mechanisms were clarified with both simulation and experimental results. Analytical formula for the interspace between ripples (i.e., wavelength of surface Langmuir wave) was developed. As illustrated by the experimental results, the competition of the two ablation mechanisms, namely surface Coulomb ablation and direct ultrafast laser ablations, was shown to result in distinct structuring patterns for a typical Gaussian pulse laser irradiation on the target surface at the appropriate laser energy fluence.
Keyword ：
Coulomb ablation Coulomb ablation Femtosecond laser Femtosecond laser Subwavelength structure Subwavelength structure Surface two-plasmon resonance effect Surface two-plasmon resonance effect
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Bing , Wang, Yang , Song, Haiying et al. Threshold effect on the femtosecond laser-induced periodic subwavelength structure: An analytical approach [J]. | OPTICS AND LASER TECHNOLOGY , 2023 , 158 . |
| MLA | Wang, Bing et al. "Threshold effect on the femtosecond laser-induced periodic subwavelength structure: An analytical approach" . | OPTICS AND LASER TECHNOLOGY 158 (2023) . |
| APA | Wang, Bing , Wang, Yang , Song, Haiying , Lam, Yee Cheong , Shaymaa, Elshaimaa Memara , Liu, Shibing . Threshold effect on the femtosecond laser-induced periodic subwavelength structure: An analytical approach . | OPTICS AND LASER TECHNOLOGY , 2023 , 158 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
微坑阵列结构具有耐磨损、抗腐蚀、提高生物相容性与抗菌性等特点，应用十分广泛。飞秒激光独特的超快加工效应使其在高质量微坑加工中独具优势。应用随机森林回归(RFR)算法和人工神经网络(ANN)算法对飞秒激光加工的微坑阵列几何形状和质量进行了预测，分析了激光加工参数对微坑的直径、深度和表面粗糙度(Ra)的影响。通过均方根误差、确定系数以及平均绝对误差对RFR与ANN 2种模型的预测能力进行了评估。结果显示：ANN模型的整体预测准确率相比RFR略高一些，R~2值为0.81,直径、深度、粗糙度预测的R~2分别为0.67、0.79、0.85。利用数据增强方法对数据集进行了扩增，ANN模型的准确率进一步提高，整体R~2为0.91,直径、深度、粗糙度预测的R~2分别为0.81、0.91、0.95。研究结果表明，ANN模型在飞秒激光加工微坑阵列的预测中相比RFR具有更优异的预测性能，且随着数据量的增加，这种优势更加明显，也进一步验证了ANN模型的潜力。
Keyword ：
机器学习 机器学习 参数预测 参数预测 激光加工 激光加工 人工神经网络 人工神经网络
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王泽林 , 王冰 , 宋海英 et al. 基于机器学习的飞秒激光加工微坑阵列特征预测 [J]. | 材料保护 , 2023 , 56 (10) : 67-73,129 . |
| MLA | 王泽林 et al. "基于机器学习的飞秒激光加工微坑阵列特征预测" . | 材料保护 56 . 10 (2023) : 67-73,129 . |
| APA | 王泽林 , 王冰 , 宋海英 , 刘世炳 . 基于机器学习的飞秒激光加工微坑阵列特征预测 . | 材料保护 , 2023 , 56 (10) , 67-73,129 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明提供了一种全波段可调偏振的非线性光学特性原位检测装置，飞秒激光器产生飞秒激光脉冲，经过光学参量放大器后经过第一可变光阑，中性密度滤光片，可变衰减片，被第一分束镜分为参考光路和信号光路。参考光路中，光束经过第二分束镜，反射光经过第一聚焦透镜进入第一光谱仪，透射光经过第二聚焦透镜进入第一功率计；信号光路中，光束经过第三聚焦透镜入射至样品上，经第二可变光阑和第三分束镜，反射光经过第四聚焦透镜进入第二光谱仪，透射光经过第五聚焦透镜进入第二功率计。实现原位的可调偏振的飞秒Z扫描测试、二次谐波测试、荧光发射光谱和荧光激发光谱的一体化测试，极大程度上降低样品测量位置变化带来的误差，同时节约时间和成本。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘丹敏 , 刘峻峰 , 刘世炳 et al. 一种全波段可调偏振的非线性光学特性原位检测装置 : CN202310650506.6[P]. | 2023-06-03 . |
| MLA | 刘丹敏 et al. "一种全波段可调偏振的非线性光学特性原位检测装置" : CN202310650506.6. | 2023-06-03 . |
| APA | 刘丹敏 , 刘峻峰 , 刘世炳 , 宋海英 , 李亚超 , 谢奇源 et al. 一种全波段可调偏振的非线性光学特性原位检测装置 : CN202310650506.6. | 2023-06-03 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Surface nanostructuring could enhance surface properties such as strength, self-cleaning, anti-fog and anti-bacterial properties. Femtosecond laser-induced periodic surface structures (LIPSS) is a nanoscale structure created with laser technique. However, its quality is significantly influenced by the complicated interrelationship between the various laser processing and material parameters. Hitherto the selection of the appropriate laser parameters mainly depends on personal experience in conjunction with many time-consuming experimental trials. To have a simple, fast, and intelligent process, a hybrid machine learning method is proposed to determine the optimized processing window for femtosecond laser-induced nanostructures. Firstly, k-means clustering method was applied to automatically classify the laser-induced nanostructures into good and bad quality classes. Before clustering, dimensionality reduction methods were applied to reduce the high dimension of image data and to extract features. Different dimensionality reduction methods including principal component analysis (PCA), local linear embedding (LLE), t-random adjacent embedding (t-SNE) and transfer learning were explored. Transfer learning showed a much better result compared with other dimensionality reduction methods. Transfer learning VGG19 model achieved the highest accuracy of 90.6 %. After clustering, the image was labelled as good and bad clusters accordingly. The labeled image was trained using artificial neural network (ANN), random forest (RF), decision tree (DT), support vector machine (SVM), k-nearest neighbors (KNN) and Naive Bayesian Classifier (NBC) algorithms for the prediction of laser processing results. The results show that DT gives the best accuracy of 96.7 %. Finally, an optimal laser processing window for femtosecond laser-induced nanostructures was determined.
Keyword ：
Intelligent manufacturing Intelligent manufacturing Laser machining Laser machining Transfer learning Transfer learning Optimal process window Optimal process window
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Bing , Wang, Peng , Song, Jie et al. A hybrid machine learning approach to determine the optimal processing window in femtosecond laser-induced periodic nanostructures [J]. | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY , 2022 , 308 . |
| MLA | Wang, Bing et al. "A hybrid machine learning approach to determine the optimal processing window in femtosecond laser-induced periodic nanostructures" . | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 308 (2022) . |
| APA | Wang, Bing , Wang, Peng , Song, Jie , Lam, Yee Cheong , Song, Haiying , Wang, Yang et al. A hybrid machine learning approach to determine the optimal processing window in femtosecond laser-induced periodic nanostructures . | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY , 2022 , 308 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The optical filter based on the micro-nano structure on the material surface is an important optical device, which is widely used in many fields. The filter is fabricated on the substrate with different shapes and sizes of micro-nano array structure, and the wavelength selectivity is realized by adjusting the processing parameters. In this paper, the finite-difference time-domain (FDTD) method is used to simulate the spectral properties of periodic array structures on the Au surface, and the spectral response characteristics of different surface structural parameters to the incident light are obtained. The simulation results show that the periodic pore array has a directional modulation function on the reflectivity and transmittance of the material surface. In the same circular aperture array structure, the wavelength selection ability is proportional to the interval distance of the array period, but the transmission peak linewidth decreases with the increase of the interval distance. The structural spectrum of the cylindrical array is closely related to the structural period. The period of the array structure increases in proportion, the center wavelengths of the reflection and transmission peak of the spectrum are red-shifted. When the height of the array structure increases proportionally, the positions of the center wavelengths of the reflection and transmission peak remain almost unchanged. When the period of the array structure increases, the center wavelength of the reflection and transmission peaks appear red-shifted, and the line width is also narrowed. For the periodic ring array structure, as the inner diameter increases, the reflection peak is significantly red-shifted, and the smaller the ring width, the faster the red-shift of the reflection peak with the wavelength. By controlling the ratio of inner diameter-to-outer diameter, the spectral characteristics of the structured surface can be effectively controlled. These simulation results provide a basis for the preparation of optical filters in the future and a new idea for the study of micro-nano characteristic structures on the surface of materials.
Keyword ：
surface multilevel micro-nano structures surface multilevel micro-nano structures spectral selective manipulation spectral selective manipulation FDTD FDTD
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Guo, Xiangjing , Song, Haiying , Du, Bairui et al. Study on Spectral Selective Manipulation Characteristics of Surface Multilevel Micro-Nano Structures by FDTD Simulation [J]. | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2022 , 23 (5) . |
| MLA | Guo, Xiangjing et al. "Study on Spectral Selective Manipulation Characteristics of Surface Multilevel Micro-Nano Structures by FDTD Simulation" . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 23 . 5 (2022) . |
| APA | Guo, Xiangjing , Song, Haiying , Du, Bairui , Tan, Shengwang , Liu, Shibing . Study on Spectral Selective Manipulation Characteristics of Surface Multilevel Micro-Nano Structures by FDTD Simulation . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2022 , 23 (5) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this paper, the effect of femtosecond laser irradiation on the wettability of semiconductor materials InAs and GaAs coated with silver film was studied. The experimental results show that the semiconductor material can be transformed from hydrophilic to hydrophobic. Laser power and scanning period play a decisive role in the morphology of micro-nano structures, and different micro-nano structures have different hydrophobicity. The higher the surface roughness is, the greater the contact angle is, and the maximum contact angle can reach 143 & DEG;. The existence of silver film further increases the surface roughness in two different ways. For InAs samples, the existence of silver film does not change the surface morphology of the micro-nano structure, which is fish-scale structure. However, the size of the microstructure is increased, and the hydrophobicity is significantly improved. The contact angle increases from 122.6 & DEG; to 139.8 & DEG;. For the GaAs sample, the existence of the silver film changed the surface morphology of the micro-nano structure. The morphology changed from a laser induced periodic structure to the convex structure, and the contact angle increased from 122 & DEG; to 143 & DEG;. The process can be used for surface modification of semiconductor materials, which is well applied to optoelectronic devices to achieve self-cleaning and anticorrosion functions of the surface and prolong the service life of optoelectronic devices.
Keyword ：
silver film-assisted semiconductor materials silver film-assisted semiconductor materials hydrophobic property hydrophobic property femtosecond laser micro/nano fabrication femtosecond laser micro/nano fabrication
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Shuang , Song, Haiying , Wang, Shengnan et al. Surface micro-nano hydrophobic structuring on silver-coated semiconductor substrate by femtosecond laser irradiation [J]. | JOURNAL OF LASER APPLICATIONS , 2022 , 34 (1) . |
| MLA | Liu, Shuang et al. "Surface micro-nano hydrophobic structuring on silver-coated semiconductor substrate by femtosecond laser irradiation" . | JOURNAL OF LASER APPLICATIONS 34 . 1 (2022) . |
| APA | Liu, Shuang , Song, Haiying , Wang, Shengnan , Du, Bairui , Wang, Bing , Emara, Elshaimaa M. et al. Surface micro-nano hydrophobic structuring on silver-coated semiconductor substrate by femtosecond laser irradiation . | JOURNAL OF LASER APPLICATIONS , 2022 , 34 (1) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The transient dynamics of anisotropic properties of GaAs was systematically studied by polarization-dependent ultrafast time-resolved transient absorption. Our findings revealed that the anisotropy of reflectivity was enhanced in both pump-induced and probe-induced processes, suggesting an extraordinary resonance absorption of photon-phonon coupling (PPC) with intrinsic anisotropic characteristic in carrier relaxation, regardless of the concrete crystallinity and orientation of GaAs sample. The results, delivering in-depth cognition about the polarization-dependent ultrafast carrier dynamics, also proved the paramount importance of interaction between polarized laser and semiconductor.
Keyword ：
GaAs GaAs photon-phonon coupling photon-phonon coupling ultrafast pump-probe ultrafast pump-probe polarization-dependence polarization-dependence
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Ya-Chao , Ge, Chao , Wang, Peng et al. Polarization-dependent ultrafast carrier dynamics in GaAs with anisotropic response [J]. | CHINESE PHYSICS B , 2022 , 31 (6) . |
| MLA | Li, Ya-Chao et al. "Polarization-dependent ultrafast carrier dynamics in GaAs with anisotropic response" . | CHINESE PHYSICS B 31 . 6 (2022) . |
| APA | Li, Ya-Chao , Ge, Chao , Wang, Peng , Liu, Shuang , Ma, Xiao-Ran , Wang, Bing et al. Polarization-dependent ultrafast carrier dynamics in GaAs with anisotropic response . | CHINESE PHYSICS B , 2022 , 31 (6) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
A very prominent characteristic of the femtosecond laser induced nanostructures is the periodic shorter than laser wavelength. To improve its actual application value, in this work, we studied the characteristic of nano-texturing fabrication by fs laser scanning W (tungsten) metal surface, the regular uniform large area nano-gratings are fast fabricated on flat surface and cylindrical surface.
Keyword ：
Large area nano-gratings Large area nano-gratings Different metal surfaces Different metal surfaces Femtosecond laser Femtosecond laser
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Song, Haiying , Liu, Shibing . Large Area Nano-gratings Fast Fabricated by Femtosecond Laser on Different Metal Surfaces [J]. | PROCEEDINGS OF THE 38TH INTERNATIONAL MATADOR CONFERENCE , 2022 : 83-89 . |
| MLA | Song, Haiying et al. "Large Area Nano-gratings Fast Fabricated by Femtosecond Laser on Different Metal Surfaces" . | PROCEEDINGS OF THE 38TH INTERNATIONAL MATADOR CONFERENCE (2022) : 83-89 . |
| APA | Song, Haiying , Liu, Shibing . Large Area Nano-gratings Fast Fabricated by Femtosecond Laser on Different Metal Surfaces . | PROCEEDINGS OF THE 38TH INTERNATIONAL MATADOR CONFERENCE , 2022 , 83-89 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明公开了一种用于磁性二维材料超快时间分辨检测的透射系统，包括飞秒激光光源、激光分束单元、泵浦光路、泵浦光路、低温磁场系统、单波长瞬态透射率数据采集系统和瞬态吸收光谱数据采集系统；所述激光分束单元包括第一分束镜和第二分束镜；所述飞秒激光光源与第一分束镜光路连接，所述第一分束镜与探测光路和泵浦光路光路连接，所述探测光路和泵浦光路与低温磁场系统光路连接，所述低温磁场系统与第二分束镜光路连接。本发明提供了一种用于磁性二维材料超快时间分辨检测的透射系统，可根据需求切换使用单波长瞬态透射率测试或者宽带瞬态吸收光谱测试，在同一系统中实现两种测试技术为简化实验设备和提高工作效率提供了极大的便利。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘世炳 , 李亚超 , 宋海英 et al. 一种用于磁性二维材料超快时间分辨检测的透射系统 : CN202211401205.1[P]. | 2022-11-09 . |
| MLA | 刘世炳 et al. "一种用于磁性二维材料超快时间分辨检测的透射系统" : CN202211401205.1. | 2022-11-09 . |
| APA | 刘世炳 , 李亚超 , 宋海英 , 麻晓冉 , 汪鹏 , 葛超 . 一种用于磁性二维材料超快时间分辨检测的透射系统 : CN202211401205.1. | 2022-11-09 . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
