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学者姓名：刘世炳
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摘要 ：
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.
关键词 ：
Coulomb ablation Coulomb ablation Femtosecond laser Femtosecond laser Subwavelength structure Subwavelength structure Surface two-plasmon resonance effect Surface two-plasmon resonance effect
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| 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 . |
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摘要 ：
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。
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| 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 . |
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摘要 ：
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。
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| 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 . |
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摘要 ：
本发明公开了一种面向芯片实验室的拉曼光谱检测简化缩微方法，激光器发射的激光通过滤光片照射到微流控芯片的样品待检测区上；经过样品待检测区拉曼散射的光线经过滤光片组被光电探测器接收，经由信号处理电路进行数据采集并传输至终端设备。激光光源经过透过滤光片入射到待检测区的待检测样品介质表面，经过介质散射后的光向四周射出，含有多个拉曼峰值的拉曼散射射线经过多个不同的波长的窄带滤光片后，分别被不同的硅光电探测器接收，这些硅光电探测器分别将光信号转化为电信号后，传输至信号处理电路中进行光信号积分等操作，是一种面向嵌入芯片实验室工作的基于多个光谱探测器的拉曼光谱检测简化缩微方法。
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| GB/T 7714 | 刘世炳 , 刘天祺 , 宋海英 . 一种面向芯片实验室的拉曼光谱检测简化缩微方法 : CN202210184097.0[P]. | 2022-02-24 . |
| MLA | 刘世炳 et al. "一种面向芯片实验室的拉曼光谱检测简化缩微方法" : CN202210184097.0. | 2022-02-24 . |
| APA | 刘世炳 , 刘天祺 , 宋海英 . 一种面向芯片实验室的拉曼光谱检测简化缩微方法 : CN202210184097.0. | 2022-02-24 . |
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摘要 ：
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.
关键词 ：
Intelligent manufacturing Intelligent manufacturing Laser machining Laser machining Transfer learning Transfer learning Optimal process window Optimal process window
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| 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 . |
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摘要 ：
Natural structural colors inspire people to obtain the technology of spectral characteristics by designing and preparing micro-nano structures on the material's surface. In this paper, the finite difference time domain (FDTD) method is used to simulate the spectral selectivity of micro-nano grating on an Au surface, and the spectral response characteristics of different physical parameters to the incident light are obtained. The results show that, when the grating depth is shallow, the absorption peaks of TM polarized incident light on the material surface take on redshifts with the increase in the grating period. Meanwhile, when the depth-width ratio of the grating structure is high, the absorption peak appears in the reflection spectrum and presents a linear red shift with the increase in the grating period after the linearly polarized light TE wave incident on the surface of the micro-nano structure. At the same time, the wavelength of the absorption peak of the reflection spectrum and the grating period take on one-to-one correspondence relations, and when the TM polarized light is incident, the reflection spectrum exhibits obvious selective absorption characteristic peaks at certain grating periods (for example, when the period is 0.4 mu m, there are three absorption peaks at the wavelengths of 0.7, 0.95, and 1.55 mu m). These simulation results can provide a good theoretical basis for the preparation of micro-nano structures with spectral regulation function in the practical application.
关键词 ：
FDTD simulations FDTD simulations spectral characteristics spectral characteristics surface micro-nano structures surface micro-nano structures
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| GB/T 7714 | Ma, Xiaoran , Du, Bairui , Tan, Shengwang et al. Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method [J]. | NANOMATERIALS , 2021 , 11 (10) . |
| MLA | Ma, Xiaoran et al. "Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method" . | NANOMATERIALS 11 . 10 (2021) . |
| APA | Ma, Xiaoran , Du, Bairui , Tan, Shengwang , Song, Haiying , Liu, Shibing . Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method . | NANOMATERIALS , 2021 , 11 (10) . |
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摘要 ：
The design and fabrication of the micro-nanostructures on materials surface is a challenging technology which can modulate and control the selective broadband spectra radiation, and the light-matter interaction mechanism behind have become the main research direction of filters, absorbers, heat radiators and other devices. Due to its high carrier mobility and excellent optical properties, graphene combined with microstructure, is likely to make great contributions to the field of spectral manipulation. In this paper, the finite-difference time-domain (FDTD) method is used to simulate the combination of graphene and microstructure. Using graphene to assist silicon, copper and nickel materials with different structures by exploring their spectral selectivity manipulation. Regarding the presence or absence of graphene, we designed grating structure model and pore array structure model for these three materials respectively, and studied the change of reflection spectrum by changing the micro-nanostructures parameters of the model. It was found that when the graphene and the substrate lattice were properly matched, the absorption effect of grating structures coated with graphene was stronger than that of grating structures without graphene when the incident light wavelength in the range of 300 nm-800 nm. At the same time, it is confirmed that the absorption effect of the grating structure is better than that of the hole array structure under the same incident light wavelength.
关键词 ：
FDTD simulation FDTD simulation Graphene-assisted micro-nanostructures Graphene-assisted micro-nanostructures Spectral selective manipulation Spectral selective manipulation
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| GB/T 7714 | Tong, Yingzhuo , Wang, Bing , Ge, Chao et al. Study on spectral properties of local graphene-assisted micro-nanostructures [J]. | RESULTS IN PHYSICS , 2021 , 25 . |
| MLA | Tong, Yingzhuo et al. "Study on spectral properties of local graphene-assisted micro-nanostructures" . | RESULTS IN PHYSICS 25 (2021) . |
| APA | Tong, Yingzhuo , Wang, Bing , Ge, Chao , Song, Haiying , Liu, Shibing . Study on spectral properties of local graphene-assisted micro-nanostructures . | RESULTS IN PHYSICS , 2021 , 25 . |
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摘要 ：
一种飞秒激光制备SiO2‑金属界面膨化微纳结构的方法，涉及飞秒激光微纳加工领域。该方法采用飞秒激光直写技术，将激光聚焦于SiO2(玻璃)‑金属薄膜交界面处，在界面处对金属薄膜进行烧蚀，形成凸起的微纳尺寸结构。利用中性密度衰减片对脉冲激光能量进行控制，利用位移台控制程序对三维位移台系统进行操纵，实现扫描速度以及扫描间距的控制，建立加工参数与膨化微纳结构尺寸相对应的参数数据库。
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| GB/T 7714 | 宋海英 , 卢美荣 , 刘世炳 et al. 一种飞秒激光制备SiO2-金属界面膨化微纳结构的方法 : CN202110476522.9[P]. | 2021-04-29 . |
| MLA | 宋海英 et al. "一种飞秒激光制备SiO2-金属界面膨化微纳结构的方法" : CN202110476522.9. | 2021-04-29 . |
| APA | 宋海英 , 卢美荣 , 刘世炳 , 王冰 , 王靓 . 一种飞秒激光制备SiO2-金属界面膨化微纳结构的方法 : CN202110476522.9. | 2021-04-29 . |
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摘要 ：
基于半导体基底飞秒光制备微纳结构实现超疏水功能的方法，属于表面改性技术领域。包括以下步骤：采用热蒸镀法或磁控溅射法在半导体材料表面镀金属膜；利用飞秒激光加工技术通过在半导体金属镀膜表面制备微纳结构，提高半导体表面粗糙度，进而形成复合界面，在半导体材料和液体之间形成空气层，最终实现超疏水功能。传统的疏水结构一般是在金属表面、石英玻璃、TiO2或聚乙烯薄膜上制备得到，表面的机械稳定性差，固体和液体之间的气穴极易被液体充满。在苛刻的环境(例如碱性、酸性和盐溶液)中，将迅速失去其性能。利用飞秒激光加工技术对半导体材料表面进行改性，使其从亲水转变为超疏水。
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| GB/T 7714 | 刘世炳 , 王胜男 , 宋海英 et al. 基于半导体基底飞秒光制备微纳结构实现超疏水功能的方法 : CN202110421345.4[P]. | 2021-04-19 . |
| MLA | 刘世炳 et al. "基于半导体基底飞秒光制备微纳结构实现超疏水功能的方法" : CN202110421345.4. | 2021-04-19 . |
| APA | 刘世炳 , 王胜男 , 宋海英 , 王冰 , 吴坚 . 基于半导体基底飞秒光制备微纳结构实现超疏水功能的方法 : CN202110421345.4. | 2021-04-19 . |
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摘要 ：
Cancer continues to be the most dangerous disease around the world; it causes electrolyte imbalance as well as metabolic changes. There is a complicated relationship between electrolyte disorder and cancer. Cancer patients commonly pass with abnormalities in serum electrolyte levels such as hypokalemia, hyperkalemia, hyponatremia, and hypercalcemia. So, these electrolyte imbalances indicate the existence of paraneoplastic processes and help come to a more informed prognosis. Hypokalemia is defined as a serum potassium concentration below 3.5 mmol/L and it is the second common electrolyte imbalance seen in patients with malignant diseases. In this paper, the contribution of serum potassium concentration to tumor progression was studied by applying a promising and non-invasive technique called laser-induced breakdown spectroscopy (LIBS). It was found that there is a correlation between hypokalemia and the colorectal cancer problem. Also, significant serum potassium concentration differences were detected among two different stages of the same cancer and also between two groups of the same stage of a cancer held in common but one of them suffers from hypercalcemia. In addition, the optimum conditions of LIBS setup were arranged such that it will be suitable to work with serum samples on glass substrate.
关键词 ：
Electrolytes Electrolytes Potassium Potassium Glass Glass LIBS LIBS Colorectal cancer Colorectal cancer Hypokalemia Hypokalemia Blood serum Blood serum
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| GB/T 7714 | Emara, Elshaimaa M. , Song, Haiying , Imam, Hisham et al. Detection of hypokalemia disorder and its relation with hypercalcemia in blood serum using LIBS technique for patients of colorectal cancer grade I and grade II [J]. | LASERS IN MEDICAL SCIENCE , 2021 , 37 (2) : 1081-1093 . |
| MLA | Emara, Elshaimaa M. et al. "Detection of hypokalemia disorder and its relation with hypercalcemia in blood serum using LIBS technique for patients of colorectal cancer grade I and grade II" . | LASERS IN MEDICAL SCIENCE 37 . 2 (2021) : 1081-1093 . |
| APA | Emara, Elshaimaa M. , Song, Haiying , Imam, Hisham , Elwekeel, Wael M. , Gao, Xun , Mohammed, Mostafa M. et al. Detection of hypokalemia disorder and its relation with hypercalcemia in blood serum using LIBS technique for patients of colorectal cancer grade I and grade II . | LASERS IN MEDICAL SCIENCE , 2021 , 37 (2) , 1081-1093 . |
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