Article
Automation & Control Systems
Sefika Kasman, Ibrahim Can Ucar, Sertan Ozan
Summary: The surface of the commercial CoCr28Mo alloy was textured using a 20W pulsed fiber laser with different beam scan strategies, resulting in a chaotic texture formation. The surface roughness ranged from 1 to 7 μm, while the surface topography significantly affected the wettability. The optimal parameters for the laser engraving process were determined using the Taguchi method.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Automation & Control Systems
Gabriel Villalba-Alumbreros, Enrique Lopez-Camara, Javier Martinez-Gomez, Santiago Cobreces, Ignacio Valiente-Blanco, Efren Diez-Jimenez
Summary: This paper presents a microcutting process of FeCo-2 V-based soft magnetic alloys as an alternative method for obtaining microparts with high magnetic properties and good geometrical finish. The results of the machining process are analyzed by varying the machining parameters such as depth of cut, tool diameter, rotation speed, and feed speed. The study shows that micromilling can be a good alternative for microfabrication of FeCo-2 V components suitable for precision microassemblies on MEMS.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Computer Science, Artificial Intelligence
Hong Seok Park, Dinh Son Nguyen, Thai Le-Hong, Xuan Van Tran
Summary: A neural network-based optimization method was developed to improve the quality of Ti-6Al-4V SLM-fabricated parts and help manufacturing engineers choose optimal process parameters. The model's performance was proven with a value of R-2 of 99% for both density ratio and surface roughness, leading to nearly identical part qualities with only about 0.9-4.4% errors at the maximum.
JOURNAL OF INTELLIGENT MANUFACTURING
(2022)
Article
Engineering, Multidisciplinary
Sefika Kasman, Ibrahim Can Ucar, Sertan Ozan
Summary: This study presents a comprehensive approach to applying texturing processes by a pulsed nanosecond fiber laser on the surface of CoCr28Mo alloy workpieces. The hatch strategy and distance, frequency, and scan speed were controlled to investigate their effectiveness on the roughness and contact angle of the texturized surface. The results showed that the roughness defined by the hatch strategy plays a decisive role in the wettability behavior, while the scan speed, frequency, and hatch distance are influential in the roughness and contact angle. Increasing scan speed and hatch distance, and decreasing frequency resulted in smoother surfaces with higher contact angles.
JOURNAL OF BIONIC ENGINEERING
(2023)
Review
Polymer Science
Balaji Ayyanar Chinnappan, Marimuthu Krishnaswamy, Huaizhong Xu, Md Enamul Hoque
Summary: Nanotechnology and electrospinning techniques have revolutionized the production of nanofibers and membranes with unique and variable properties. This review explores the effects of various process parameters on the characteristics of biomedical nanofibers, shedding light on the optimal conditions for producing uniform, smooth, and high-quality fibers. The applications of these nanofibers are also discussed.
Article
Materials Science, Coatings & Films
Peihua Xu, Lida Zhu, Pengsheng Xue, Guiru Meng, Shuhao Wang, Zhichao Yang, Jinsheng Ning, Qing Lan
Summary: In this study, a multi-track overlapping model was established for laser cladding (LC) coatings, combined with response surface method to optimize the overlapping distance. The results showed that the proposed model effectively improved coating quality and provided important theoretical support for surface strengthening or repair of engineering components.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Automation & Control Systems
Moses Oyesola, Khumbulani Mpofu, Ntombi Mathe, Samuel Fatoba, Shaik Hoosain, Ilesanmi Daniyan
Summary: This study investigates the influence of laser power and scanning speed on the surface hardness and roughness of Ti6Al4V metal specimens fabricated via selective laser melting. Results show that increasing laser power leads to higher surface hardness and lower roughness, while increasing scanning speed results in higher hardness and roughness. Optimal process parameters identified are a laser power of 300 W and a scan speed of 1400 mm/s, producing minimal surface roughness and a hardness value of 409.391 HV for aerospace applications.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Polymer Science
Ying Yan, Yu Mao, Bo Li, Ping Zhou
Summary: Thermoplastic polymers such as PMMA, PEEK, and PI are polymer materials with good mechanical strength properties and are widely used in aerospace, optical engineering, and microfluidics. This study analyzed the mechanical properties and machinability of these polymers, showing that they have good mechanical properties and machinability. The surface quality of brittle removal is generally superior to the viscoelastic state.
Review
Materials Science, Multidisciplinary
Ishwer Shivakoti, Golam Kibria, Robert Cep, Bal Bahadur Pradhan, Ashis Sharma
Summary: Laser surface texturing (LST) is an effective method for generating texture on work surface and has shown tremendous potential for biomedical applications, improving the efficacy of biomaterials significantly. It has extreme potential for surface modification of biomaterial and can be utilized for biomedical applications.
Article
Chemistry, Physical
Szymon Tofil, Robert Barbucha, Marek Kocik, Rafal Kozera, Mateusz Tanski, Natarajan Arivazhagan, Jianhua Yao, Andrej Zrak
Summary: The article presents a method of increasing the shear strength of adhesive joints for lightweight metals such as aluminum with plastics through laser surface microstructuring, which significantly increases the adhesive strength.
Article
Materials Science, Multidisciplinary
Sefika Kasman, I. Can Ucar, Sertan Ozan
Summary: This study used surface roughness and wettability tests to evaluate the texture created on the AISI 316LVM metal surface by different laser processing parameters. The movement of the laser beam during texture creation significantly affected the wettability behavior. Surface roughness alone did not affect the wettability, but the hatching strategy and overlap ratios did affect the surface roughness.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Automation & Control Systems
Zhonghang Yuan, Bin Fang, Yuanbin Zhang, Fei Wang
Summary: The influence of ultrasonic vibration assisted micromilling (UVAMM) on the formation mechanism of burr was studied, and the results show that ultrasonic vibration can effectively inhibit the formation of burr and improve chip breaking ability.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Natalia Porotnikova, Dmitriy Zakharov, Anna Khodimchuk, Edhem Kurumchin, Denis Osinkin
Summary: This article investigates the oxygen exchange mechanism between the mixed ionic and electronic oxide LaNi0.6Fe0.4O3-delta and oxygen, using two isotopic methods. The kinetic dependence of the oxygen/oxide interaction is determined and the oxygen exchange rate and diffusion coefficient are calculated. The differences in the mechanisms of oxygen exchange and diffusion on dense and powder samples are discussed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Bastian Meylan, Ivan Calderon, Kilian Wasmer
Summary: In mold making, the surface roughness of the mold directly affects the surface roughness of the produced part. This study investigates the use of laser polishing to reduce the roughness of tool steel molds and optimize the polishing parameters.
Article
Multidisciplinary Sciences
Xiaoye Cai, Tong Liu, Xuan Yan, Zonghui Cheng, Lu Pan, Zongjun Tian, Liangshun Luo, Yanqing Su
Summary: In this study, high-silicon Al-42Si alloy was prepared using selective laser melting (SLM) with different process parameters. The microstructure evolution and defects formation were investigated, and the process parameters were optimized. It was found that the density and hardness of the SLM-fabricated alloy increased with the increase of input energy density. Heat treatment improved the microstructure stability and homogeneity of the SLM-fabricated alloy. The optimal SLM parameters for the Al-42Si alloy were determined.
Article
Engineering, Biomedical
Yanjun Li, Jingbo Yang, Ying Zheng, Rui Ye, Bin Liu, Yong Huang, Wei Zhou, Lelun Jiang
Summary: The study introduced a novel iontophoresis-driven porous MA patch (IDPMAP) and a portable iontophoresis-driven device for active transdermal delivery of charged liquid drugs. IDPMAP showed robust drug delivery ability with more advanced controllability and efficiency compared to pristine MA or iontophoresis, offering a platform technique for effective drug delivery in an active-controlled manner.
ACTA BIOMATERIALIA
(2021)
Article
Chemistry, Analytical
Jinhui Zhang, Maoyu Lin, Wei Zhou, Tao Luo, Lifeng Qin
Summary: This work presents a mechanical model of a rope-driven piezoelectric vibration energy harvester for low-frequency and wideband energy harvesting. Through numerical simulations and experiments, the effects of multiple parameters on the performance of the PVEH were systematically investigated, showing a reasonable agreement between simulation and experimental results. It was found that the performance of the PVEH can be conveniently adjusted by changing rope parameters.
Article
Chemistry, Physical
Rui Chen, Tao Luo, Da Geng, Zheng Shen, Wei Zhou
Summary: Flexible temperature sensors with fast response and good performance were successfully fabricated in this study, showing great potential for applications in healthcare, human-machine interface, and unlocking code locks, among others. The sensors also demonstrated capabilities in monitoring human breathing, blowing, temperature variation, as well as finger proximity detection.
Article
Engineering, Chemical
Tianqing Zheng, Wei Zhou, Yuchen Zhong, Yifan Yang, Minghui Hong, Zheng Shen
Summary: By designing and optimizing a regular-porous structure with multiple microchannels as combustion reaction support, the temperature difference of the autothermal methanol steam reforming microreactor can be decreased, and its long-term performance in supplying stable hydrogen source is enhanced.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Chenying Zhang, Rui Chen, Chiqian Xiao, Huiyan Zhao, Yuxin Wang, Da Geng, Songyue Chen, Tao Luo, Wei Zhou
Summary: This study uses laser direct writing technology to fabricate highly ordered hierarchical microstructures (HMs) for enhancing the sensitivity of flexible pressure sensors. Two case studies are conducted to verify the performance of the sensor, demonstrating the potential of laser processing in fabricating highly ordered HMs for achieving highly sensitive sensors.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Da Geng, Songyue Chen, Rui Chen, Yuru You, Chiqian Xiao, Chen Bai, Tao Luo, Wei Zhou
Summary: An ordered multilevel microstructure is proposed in this study for performance regulation of piezoresistive pressure sensors. The fabricated flexible sensors exhibit high sensitivity, low detection limit, short response time, and excellent mechanical stability over a wide range. This design and fabrication strategy can be further optimized and applied to a variety of flexible materials.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Nanoscience & Nanotechnology
Wenjun Xu, Xinying Li, Rui Chen, Weiming Lin, Ding Yuan, Da Geng, Tao Luo, Jinhui Zhang, Linjing Wu, Wei Zhou
Summary: In this paper, a method for ultrafast fabrication of magnetic cilia arrays using micro-cavity inducing effect is proposed. The mechanism of this effect is revealed. The method allows for the production of variable stiffness pressure sensors, improved mixing efficiency, and serves as a carrier for rapid sub-encryption.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Xinning Zhu, Wei Zhou, Zhengchao Zhu, Rongkang Liu, Yunsong Lian, Rui Chen, Linjing Wu, Dongsheng Ji
Summary: This study establishes and investigates a traveling-wave flow field for the performance improvement of proton exchange membrane fuel cell (PEMFC). The influence of multiple structural parameters on the flow law, mass transfer characteristics, and output performance of PEMFC is analyzed, and the weight coefficient of each structural parameter is obtained. Simulation results show that the traveling-wave flow field has excellent oxygen transport and drainage functions, and it significantly improves the mass transfer coefficient and net power density of the PEMFC compared to the conventional flow field. The weighting relationship of the traveling-wave structural parameters on the mass transfer performance and net power density is identified as wave height > wave number > wave length > wave spacing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Shupan Zhou, Yuchen Zhong, Weiming Lin, Huihui You, Xinying Li, Linjing Wu, Wei Zhou
Summary: A novel flexible tubular microreactor was designed using a corrugated shell and a high porosity porous copper fiber rod as catalyst support, aiming to be potentially used in constrained space. The influence of placement position, bending direction, and bending angle on the reaction performance of the microreactor was investigated. The results showed that the placement position and bending direction significantly affected the reaction performance, while the reaction performance decreased with increasing bending angle.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Xinying Li, Dongbi Fu, Wenjun Xu, Ding Yuan, Xiyang Jiang, Ting Fu, Xuyang Chu, Yufei Gao, Wei Zhou
Summary: This paper introduces a cutting method for preparing ceramic micro-channel catalyst supports and successfully fabricates micro-channels with high aspect ratio. The integrity of the micro-channel structures processed by diamond wire sawing is analyzed, and the effect of surface morphology on catalyst loading performance under different processing parameters is studied. The experimental results show that using ceramic microchannel arrays as catalyst supports in hydrogen production can achieve good reaction performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Xinying Li, Ding Yuan, Tian Xie, Quancong Zhang, Wenjun Xu, Ting Fu, Xuyang Chu, Tao Luo, Linjing Wu, Wei Zhou
Summary: This study demonstrates the use of Joule-heating catalyst support (JHCS) to enhance the efficiency of methanol steam reforming reactions. The Joule-heating method allows for direct heat provision inside the reactor, resulting in faster thermal response and improved methanol conversion rate compared to external heating methods.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Chen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Summary: In this study, a batch fabrication strategy is proposed for paper-based waterproof flexible pressure sensors using single-walled carbon nanotube coated tissue paper pieces. The pieces are bonded using roll-to-roll lamination, resulting in sensors with high stability, rapid response time, and a wide measurement range. These sensors can be used for human physiological signal detection, motion tracking, and drowning detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Wenzhuo Zhang, Lifeng Qin, Rui Chen, Jincheng Wang, Wei Zheng, Wei Zhou
Summary: This article systematically analyzes the influence of the on-resistance of the multiplexer on the measurement error of resistive sensor arrays and proposes improved strategies. The simulation and experimental results confirm the effectiveness of the proposed strategies.
IEEE SENSORS JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Chen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Summary: We have developed a roll-to-roll lamination strategy for batch fabrication of paper-based waterproof flexible pressure sensors, which exhibit good consistency and reliability. This method allows for the rapid fabrication of waterproof sensors with high stability, fast response time, and wide measurement range, enabling applications in human physiological signal detection, motion tracking, and drowning detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jincheng Wang, Rui Chen, Dongsheng Ji, Wenjun Xu, Wenzhuo Zhang, Chen Zhang, Wei Zhou, Tao Luo
Summary: In this study, a flexible bimodal sensor that utilizes the spatial orthogonality between in-plane thermoelectricity and out-plane piezoresistivity is proposed. This sensor enables fully decoupled temperature-pressure sensing with high sensitivity and negligible mutual interference, providing accurate measurements within a wide pressure range and temperature variation.
Article
Optics
Yin Xiao, Lina Zhou, Wen Chen
Summary: This paper introduces a correspondence imaging approach for reconstructing high-quality objects through complex scattering media. By deriving a rectified theory and introducing temporal correction, the proposed method eliminates the effect of dynamic scaling factors. Experimental results demonstrate the advantages of the proposed method over conventional methods in complex scattering environments, and it can also be combined with other methods to further enhance the quality of reconstructed objects.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Zengxuan Jiang, Minghao Chao, Qingsong Liu, Bo Cheng, Guofeng Song, Jietao Liu
Summary: In this paper, a multi-focal metalens with high focusing efficiency controlled by circular polarization multiplexing is demonstrated. The metalens can generate four transversely distributed focal points under normal incidence of linearly polarized light, supporting both left-circularly polarized and right-circularly polarized conversion. Furthermore, an oblique incidence metalens is designed to achieve high total focusing efficiency for terahertz waves and provides potential new applications for polarization imaging and detection.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Yiran Wang, Yu Ji, Xuyang Zhou, Xiu Wen, Yutong Li, Zhengjun Liu, Shutian Liu
Summary: This work presents a new reconstruction framework for structured illumination microscopy (SIM), which only requires four raw images and avoids extensive iterative computation. By using checkerboard pattern illumination modulation instead of sinusoidal fringe illumination, the proposed method significantly reduces image acquisition time and achieves higher image reconstruction rate. Additionally, the reconstruction process is non-iterative and not limited by the field of view size.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Qian He, Li Pei, Jianshuai Wang, Jingjing Zheng, Tigang Ning, Jing Li
Summary: This paper proposes a 3D refractive index profile visualization method to demonstrate mode activation and evolution in fiber fusion splicing. The method is validated through experimental results and provides support for various fiber splicing operations and mode coupling modulation.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Qiwei Li, Qiyu Wang, Fang Lu, Yang Cao, Xu Zhao
Summary: LSHIP is a lenslet-array-based snapshot hyperspectral imaging polarimeter that combines spectral polarization modulation with integral field imaging spectrometry. It can simultaneously acquire three-dimensional spatial and spectral data-cubes for linear Stokes parameters in a single snapshot.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Huicong Li, Bing Lv, Meng Tian, Wenzhu Huang, Wentao Zhang
Summary: This study proposes a temperature compensation scheme for unbalanced interferometers using sensing fibers with different temperature coefficients, aiming to resolve the temperature disturbance and achieve high strain resolution. The experimental results confirm the effectiveness of the proposed scheme in high-resolution, long-term, low-frequency, and static strain sensing.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Hongxiang Chang, Rongtao Su, Yuqiu Zhang, Bowang Shu, Jinhu Long, Jinyong Leng, Pu Zhou
Summary: High-speed variable-focus optics provides new opportunities for fiber laser applications in various fields. This paper investigates a non-mechanical axial focus tuning method using coherent beam combining (CBC) technique and proposes a tilt modulation assisted method to extend the tuning range.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Yubo Ni, Shuai Fu, Chaoyang Su, Zhaozong Meng, Nan Gao, Zonghua Zhang
Summary: This paper proposes a surface adaptive fringe pattern generation method to accurately measure specular surfaces, eliminating the out-of-focus effect and improving measurement accuracy and reliability.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Zifan Wang, Tianfeng Zhou, Qian Yu, Zihao Zeng, Xibin Wang, Junjian Hu, Jiyong Zeng
Summary: Fast-axis collimation (FAC) lens arrays are crucial in laser systems, and their precision can be improved through the development of an optical collimation system and the use of thermal compensation to correct for non-uniform thermal expansion.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Jincheng Chen, Qiuyu Fang, Li Huang, Xin Ye, Luhong Jin, Heng Zhang, Yinqian Luo, Min Zhu, Luhao Zhang, Baohua Ji, Xiang Tian, Yingke Xu
Summary: This study developed a novel deep learning accelerated SRRF method that enables super-resolution reconstruction with only 5 low SNR images, and allows real-time visualization of microtubule dynamics and interactions with CCPs.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Pan Liu, Yongqiang Zhao, Ning Li, Kai Feng, Seong G. Kong, Chaolong Tang
Summary: This article presents a technique for inverse design of multilayer deep-etched gratings (MDEG) using a deep neural network with adaptive solution space. The proposed method trains a deep neural network to predict the probability distribution across the discretized space, enabling evaluation of an optimal solution. The results show improved efficiencies using only a reduced dataset and avoiding one-to-many mapping challenges.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Evelina Bibikova, Nazar Al-wassiti, Nataliya Kundikova
Summary: Light beams possess three types of angular momentum, namely spin angular momentum, extrinsic orbital angular momentum, and intrinsic orbital angular momentum. The interaction between these momenta leads to the spin-orbit interaction of light and topological effects. This study predicts a new topological effect resulting from the influence of extrinsic orbital angular momentum on spin angular momentum in converging asymmetrical light beams. It manifests as the transformation of linear polarized light into elliptically polarized light when an asymmetrical beam passes through the left or right half of the focal plane. The measured value of the topological circular amplitude anisotropy R was found to be R = +/- (0.60 +/- 0.08) x 10(-3). This new effect contributes to our understanding of light and has potential applications in developing sensors in optics.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Hamdy H. Wahba
Summary: This study combines multiple-beam Fizeau interference and single-shot digital holographic interferometry to study thick phase objects. By collecting optical phase at different focal planes, the angular spectrum method is used for the first time to retrieve optical phase maps through the focal depth. The proposed method proves to be effective in providing accurate numerical focusing and phase maps reconstruction.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Mohammed A. Isa, Richard Leach, David Branson, Samanta Piano
Summary: Due to the complexity of resolving object form and pose in images, new vision algorithms prioritize identification and perception over accurate coordinate measurement. However, the use of planar targets for coordinate measurement in vision systems has several drawbacks, including calibration difficulties and limited viewing angles. On the other hand, the use of sphere targets is infrequent in vision-based coordinate metrology due to the lack of efficient multi-view vision algorithms for accurate sphere measurements.
OPTICS AND LASERS IN ENGINEERING
(2024)
Article
Optics
Ildar Rakhmatulin, Donald Risbridger, Richard M. Carter, M. J. Daniel Esser, Mustafa Suphi Erden
Summary: This paper reviews the application of machine learning in laser systems. While machine learning has been widely used in general control automation and adjustment tasks, its application in specific tasks requiring skilled workforces for high-precision equipment assembly and adjustment is still limited. The paper presents promising research directions for using machine learning in mirror positional adjustment, triangulation, and optimal laser parameter selection, based on the recommendations of PRISMA.
OPTICS AND LASERS IN ENGINEERING
(2024)
