Article
Optics
Qun Cai, Gang Li, Biao Wu, Shengyu Xu, Lyuyuan Wang, Yupeng Guo
Summary: In this study, composite coatings on Ti6Al4V alloy were fabricated using TiC and Ni60 mixture powders by laser cladding. The influence of TiC content on the microstructure and properties of the coatings was investigated. It was found that TiC particles can affect the morphology of precipitates and the wear resistance of the coatings. The precipitates in the coatings showed brittle fracture features.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Yutao Li, Hanguang Fu, Tiejun Ma, Kaiming Wang, Xiaojun Yang, Jian Lin
Summary: In this study, WC and in-situ TiC particles were added to improve the wear resistance of AlCoCrFeNi coating. The in-situ TiC particles were uniformly distributed in the coating, improving the uneven distribution of WC particles and forming a sound interface. The phase constituents of the coating matrix were the BCC and B2 phases. With the increase of WC content, a needle W-rich BCC phase appeared in the coating matrix. The addition of WC particles, in-situ TiC particles, and solid solution strengthening contributed to the significant improvement in hardness and wear resistance of the coating.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Dong-Dong Zhuang, Wang -Wang Tao, Bo Du, Shu-Hao Zhang, Xin-Long Lian, Fei Wang
Summary: This paper provides theoretical support for the preparation of CrMnFeCoNi coatings with excellent performance by laser cladding. High-hardness TiC particles act as wear-resistant skeletons in the coatings. The addition of TiC reduces the mass loss and friction coefficient of the coatings, but excessive TiC content leads to the breakdown of the skeleton characteristic. The optimal TiC content is found to be 4 wt% in the coatings.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Coatings & Films
Jing Liang, Xinyu Jia, Ye Liu, Xiuyuan Yin, Suiyuan Chen, Changsheng Liu
Summary: TiC reinforced Ti2AlNb-based coatings were fabricated on Ti-6Al-4V surface using laser cladding with different NbC additions. The coatings showed improved mechanical properties, with the highest microhardness and smallest volume loss achieved with 2.5 wt% NbC addition. Excessive NbC addition led to a slight decrease in mechanical properties, attributed to TiC coarsening.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Li Yutao, Wang Kaiming, Fu Hanguang, Guo Xingye, Lin Jian
Summary: The reinforcement effect of in-situ TiC particles in AlCoCrFeNi-based high-entropy alloy coatings and their microstructure and wear resistance were investigated. The results show that the in-situ TiC particles considerably improve the hardness and wear resistance of the coatings.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Tao Chen, Zixin Deng, Defu Liu, Xiangcheng Zhu, Yi Xiong
Summary: Recent advancements in biological applications, such as artificial joint replacement, focus on enhancing the wear resistance of titanium alloys through the fabrication of a TiC ceramic coating on Ti6Al4V substrates. This approach has shown promising results in improving the mechanical reliability and wear resistance while maintaining good cytocompatibility.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zhanyong Zhao, Lizheng Zhang, Peikang Bai, Wenbo Du, Shaowei Wang, Xiangyan Xu, Qingnan Dong, Yuxin Li, Bing Han
Summary: The TiC/graphene/graphite/Ti6Al4V composite coating was prepared using laser cladding, showing improved wear resistance and changing wear mechanisms under different loads, transitioning from abrasive and oxidation wear to delamination, fatigue, and oxidation wear. The in-situ reaction between graphene and titanium formed feathery TiC, enhancing the coating's tribological behavior.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Coatings & Films
Dong-Dong Zhuang, Wang -Wang Tao, Hua-Min Ni, Ai-Zhong Wang, Bo Du, Shu-Hao Zhang, Xin-Long Lian, Dan Wang, Yang-Ju Feng
Summary: The effect of ultrasound on the distribution pattern of TiC and properties of 4 wt% TiC reinforced CrMnFeCoNi coatings fabricated by laser cladding has been systematically investigated. The increased ultrasound amplitude promotes the partial or local dissolution of TiC into C and Ti, while a limited amount of C and Ti is solidly dissolved into the matrix, resulting in an increase in the lattice constant. The ultrasonic treatment leads to the distribution of TiC in a fishbone shape, enhancing the hardness and wear resistance of the coatings, but decreasing their corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Automation & Control Systems
Jingdong Zhang, Guiru Meng, Lida Zhu, Zhichao Yang, Pengsheng Xue, Peihua Xu
Summary: The TiC particles reinforced Inconel 718 composite coating produced by laser cladding with different ceramic mass fractions can improve the poor wear resistance and hardness of H13 steel, enhancing its mechanical properties in complex working conditions.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Dong-Dong Zhuang, Wang-Wang Tao, Hua-Min Ni, Ai-Zhong Wang, Bo Du, Shu-Hao Zhang, Xin-Long Lian
Summary: The corrosion resistance and evolution behavior of TiC in CrMnFeCoNi coatings with varying TiC contents were investigated. The distribution pattern of TiC and its aggregation characteristics were found to be influenced by the TiC loading. The electrochemical corrosion resistance of the coatings showed a significant correlation with the TiC concentration, with an increase in TiC content resulting in improved corrosion resistance.
MATERIALS CHARACTERIZATION
(2023)
Article
Automation & Control Systems
Hao Zhang, Guofu Lian, Qiang Cao, Yingjun Pan, Yang Zhang
Summary: The TiC-Ni35A composite coating fabricated on AISI 1045 steel substrate by laser cladding process showed reliable metallurgical bonding, improved microhardness, wear resistance, and reduced coefficient of friction. The ability of TiC decomposition and re-nucleation was significantly enhanced with increasing laser energy densities and decreasing TiC powder ratios. The microhardness and wear resistance of the composite coating were greatly improved compared to the AISI 1045 steel substrate.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Optics
Tong Ge, Lan Chen, Pengfei Gu, Xudong Ren, Xiaoming Chen
Summary: Extreme high speed laser cladding technology (EHLA) can improve the efficiency of coating production and prepare high quality coatings. In this study, TiC/Inconel 625 composite coatings produced by EHLA exhibited finer microstructure and more uniform elements distribution, leading to improved corrosion resistance. The addition of TiC in EHLA coatings facilitated the formation of interdendritic carbides and a dense passive film on the coating surface.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
H. . F. Zhang, L. Wang, S. Zhang, C. . L. Wu, C. . H. Zhang, X. Y. Sun, J. Chen
Summary: In this paper, Fe-based composite coating modified with TiC ceramic particles was successfully fabricated on a 304 stainless steel substrate using laser cladding technique. The phase distribution, microstructure, microhardness, wear resistance, electrochemical performance, and cavitation corrosion resistance of the composite coating were systematically studied. The results showed that the addition of TiC particles refined the microstructure and improved the microhardness and cavitation corrosion resistance of the coating. The composite coating also exhibited superior electrochemical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Liaoyuan Chen, Ying Chen, Xin Chen, Tianbiao Yu, Zixuan Wang
Summary: In situ synthesis of titanium carbide/nickel functionally gradient coatings (FGC) was carried out using powder-fed laser cladding on ductile cast iron. The phase composition, microhardness, and wear rate of the FGC varied with the deposition height. The top layer of the in situ FGC exhibited the highest microhardness and the lowest wear rate.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Xinzhou Zhang, Yacheng Sun, Guanxi Yu, Chen Chen, Xudong Ren, Lan Chen
Summary: The surface morphology, microstructure, and high-temperature oxidation resistance of multi-layer TiC/IN625 coatings deposited on AISI 1045 steel substrate by conventional laser cladding (CLA) and extreme high-speed laser cladding (EHLA) were characterized and compared. The results showed that the cladding speed significantly affected the surface quality. The best surface quality was obtained at a cladding speed of 49.8 m/min, with Ra of 11.75 μm and Sa of 13.17 μm. The microstructure of the coatings was dominated by dendrites, with smaller dendrite arm spacing and no apparent transition layer found in the EHLA sample. A two-layered oxide structure was observed in the cross-section of all samples. The EHLA sample exhibited lower mass loss, indicating better high-temperature oxidation resistance attributed to lower surface roughness, smaller dendrite size, smaller grain size, and higher amount of LAGBs.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Yunhan Liu, Bin Huo, Zhongping Chen, Kun Wang, Lingjie Huang, Lianqiang Che, Bin Feng, Yan Lin, Shengyu Xu, Yong Zhuo, Caimei Wu, De Wu, Zhengfeng Fang
Summary: This study investigated the effects of chromium yeast on the growth performance, carcass characteristics, meat traits, antioxidant status, immune traits, and serum biochemical parameters of grow-finish pigs. The results showed that chromium yeast supplementation improved the meat quality and immune traits of pigs and increased their antioxidant capacity.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Yang Liu, Shaohua Li, Mingxuan Li, Qingsheng Li, Xiaofeng Lu, Xiaolei Zhu
Summary: This study investigated the geometric morphologies, microstructure, and porosity of aluminum alloys laser welding joints (ALWJ) using tests such as optical microscope (OM) and computed tomography (CT). The mechanical properties were evaluated through tensile tests and finite element simulation. A prediction model considering geometry and porosity was proposed to forecast the ultimate strength of ALWJ. The results revealed that the geometries were significantly influenced by the welding process, especially the penetration depth, which increased with higher heat input and improved mechanical strength. However, higher heat input also led to more pores due to burning damage of the magnesium (Mg) element, negatively affecting the mechanical strength. The developed strength prediction model demonstrated accuracy and reliability, with a prediction error within 15%.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Microbiology
Yalei Liu, Xinlin Jia, Junlei Chang, Xuemei Jiang, Lianqiang Che, Yan Lin, Yong Zhuo, Bin Feng, Zhengfeng Fang, Jian Li, Lun Hua, Jianping Wang, Zhihua Ren, Mengmeng Sun, De Wu, Shengyu Xu
Summary: The study found that maternal addition of yeast cultures had a significant effect on the growth performance and intestinal microorganisms of weaned piglets, but did not improve their antioxidant performance.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jian Wang, Kai Zhu, Weichen Zhang, Xiaolei Zhu, Xiaofeng Lu
Summary: The development of wire arc additive manufacturing (WAAM) provides a new solution for manufacturing aluminum alloy (AA) components used in lightweight mobile heat storage equipment. Adjusting the deposition angle between layers can enhance the microstructure and mechanical properties of the WAAM AA5356 component.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Zheng Tang, Shengyu Xu, Nan Yin, Yong Yang, Qinghua Deng, Jinyou Shen, Xiaoyue Zhang, Tianyu Wang, Huichao He, Xiangyang Lin, Yong Zhou, Zhigang Zou
Summary: To enable the conversion of CO2 and H2O into fuels and O-2 using solar energy, a series of covalent microporous polymers based on Troger's base were synthesized. These polymers have a flexural backbone and unique charge-transfer properties, with enhanced microporosity and CO2 adsorption/activation capacity due to the incorporation of a rigid structural twist Troger's base unit. The study reveals that the Troger's base unit acts as an electron trap, suppressing carrier recombination and designating the reaction site, leading to regulated product allocation in catalytic reactions. Optimally, the synthesized CMP-nTB achieves high photocatalytic CO production and unity selectivity, along with H2O oxidation to O-2 without the need for photosensitizers or co-catalysts. This work provides valuable insights for the development of specialized artificial organic photocatalysts.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Lun Hua, Jing Li, Yi Yang, Dandan Jiang, Xuemei Jiang, Xingfa Han, Jin Chao, Bin Feng, Lianqiang Che, Shengyu Xu, Yan Lin, Jian Li, Zhengfeng Fang, Mengmeng Sun, Senyan Du, Ting Luo, De Wu, Yong Zhuo
Summary: The role of liver FGF21 and the mechanisms underlying the protective effects of time-restricted feeding (TRF) in nonalcoholic fatty liver disease (NAFLD) were studied. TRF prevented body weight gain, improved glucose homeostasis, and protected against high-fat diet-induced hepatosteatosis and liver damage. However, these beneficial effects of TRF were blunted in mice lacking liver FGF21.
Article
Agriculture, Dairy & Animal Science
Shengyu Xu, Xinlin Jia, Yalei Liu, XuJing Pan, JunLei Chang, Wenyan Wei, Ping Lu, Derek Petry, Lianqiang Che, Xuemei Jiang, Jianping Wang, De Wu
Summary: This study investigated the effects of yeast-derived postbiotic (YDP) supplementation on sow and piglet performance. The results showed that YDP supplementation increased backfat deposition in sows during late gestation, improved piglets' weaning weight, decreased piglet mortality and diarrhea index, and enhanced maternal and offspring immunity.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Food Science & Technology
Shengyu Xu, Xiaojun Jiang, Yalei Liu, Xuemei Jiang, Lianqiang Che, Yan Lin, Yong Zhuo, Bin Feng, Zhengfeng Fang, Lun Hua, Jian Li, Jianping Wang, Zhihua Ren, Mengmeng Sun, De Wu
Summary: This study suggests that silibinin, a component of milk thistle, can reduce inflammatory responses and increase milk production in lactating sows. It exerts its effects by regulating the mTOR/NF-κB signaling pathway in porcine mammary epithelial cells. Silibinin may be a potential dietary strategy to alleviate inflammation in lactating sows.
MOLECULAR NUTRITION & FOOD RESEARCH
(2023)
Article
Optics
Guangli Yu, Jianyong Ding, Chunqi Fang, Binbin Li, Yong Qian, Jun Zhou, Weibiao Chen, Xiaolei Zhu
Summary: A high repetition rate, high peak power, narrow linewidth nanosecond 589 nm laser was demonstrated based on sum-frequency generation (SFG) of 1064 nm and 1319 nm lasers. By amplifying the externally modulated 1064 nm laser and employing ramp-hold-fire detection and dual piezoelectric ceramic (PZT) feedback, a stable and adjustable laser output with pulse energy of 20 mJ at 500 Hz repetition rate was achieved. Finally, by sum-frequency of the 1064 nm and 1319 nm lasers, a highly efficient 589.1595 nm laser with pulse energy of 10.4 mJ and pulse duration of 62 ns was generated.
OPTICS COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Xiaohua Huang, Heng Zhu, Wei Lu, Lei Cao, Zhengfeng Fang, Lianqiang Che, Yan Lin, Shengyu Xu, Yong Zhuo, Lun Hua, Xuemei Jiang, Mengmeng Sun, De Wu, Bin Feng
Summary: The mechanism by which acute endoplasmic reticulum (ER) stress suppresses hepatic gluconeogenesis is unclear. This study found that MAPK phosphatase 3 (MKP-3) plays a positive regulatory role in this process. Acute ER stress inhibits hepatic gluconeogenesis by degrading MKP-3. Therefore, MKP-3 may be a therapeutic target for drug-induced liver injury (DILI)-related hypoglycemia.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Nutrition & Dietetics
Yaxue Cao, Min Yang, Jie Song, Xuemei Jiang, Shengyu Xu, Lianqiang Che, Zhengfeng Fang, Yan Lin, Chao Jin, Bin Feng, De Wu, Lun Hua, Yong Zhuo
Summary: FGF21, a hormone released in the liver, has been identified as an important endocrine signal for dietary protein intake. This study investigated the role of FGF21 and hypothalamic changes in controlling estrous cyclicity by dietary protein intake. The research found that severe dietary protein restriction resulted in the cessation of estrous cyclicity and ovarian follicle development, and hepatic FGF21 and hypothalamic Kiss-1 were partially required for this process.
Article
Agriculture, Dairy & Animal Science
Yuwei Zhang, Qiang Zhou, Shiya Liu, Xiang Quan, Zhengfeng Fang, Yan Lin, Shengyu Xu, Bin Feng, Yong Zhuo, De Wu, Lianqiang Che
Summary: The study found that partially substituting whey protein concentrate with spray-dried porcine plasma in milk replacer for neonatal piglets can improve growth performance and intestinal morphology, increase digestive enzyme activity, and reduce pathogenic bacteria.
Article
Biochemistry & Molecular Biology
Guangrong Xie, Qipeng Zhang, Zhengfeng Fang, Lianqiang Che, Yan Lin, Shengyu Xu, Yong Zhuo, Lun Hua, Xuemei Jiang, Jian Li, Mengmeng Sun, Yuanfeng Zou, Chao Huang, Lixia Li, De Wu, Bin Feng
Summary: This study found that excessive intake of oxidized fat during pregnancy and lactation can harm both the mother's body and the health of their offspring. However, supplementation of vitamin D and inulin during pregnancy and lactation can mitigate these damages.
Review
Microbiology
Feng Qin, Wenyan Wei, Junjie Gao, Xuemei Jiang, Lianqiang Che, Zhengfeng Fang, Yan Lin, Bin Feng, Yong Zhuo, Lun Hua, Jianping Wang, Mengmeng Sun, De Wu, Shengyu Xu
Summary: Dietary fiber is a substance that cannot be digested by endogenous digestive enzymes but can be digested by intestinal microorganisms. In recent years, it has gained increasing attention due to its functional properties, potential health benefits to animals, and fermentability. Research suggests that dietary fiber can provide energy for pigs through intestinal microbial fermentation, improve sow welfare and reproductive performance, regulate intestinal flora, and enhance immunity.
Article
Agriculture, Dairy & Animal Science
Ya Wang, Guowei Li, Xiangyuan Ma, Shengyu Xu, Yan Lin, Lun Hua, Jian Li, Bin Feng, Zhengfeng Fang, Xuemei Jiang, Yong Zhuo, Lianqiang Che, De Wu
Summary: This experiment aimed to determine the chemical composition and nutrient digestibility of six extruded full fat soybean samples from different sources in non-gestating, gestating, and lactating sows. The results showed that extruded full fat soybean can be used as a high-quality energy ingredient in sow diets with high DE and ME values. This work provides accurate nutritional value parameters for extruded full fat soybean to guide its rational use in sow diets.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Optics
Zhi-Huan Pang, Meng Liu, Ai-Ping Luo, Yi Xu, Wen-Cheng Xu, Songnian Fu, Zhi-Chao Luo
Summary: We propose a novel mode-dependent gain equalizer using a few-mode chirped fiber Bragg grating (FM-CFBG) to effectively mitigate the mode-dependent gain in an all-fiber 2-mode EDFA. The equalizer based on FM-CFBG offers compact size, low insertion loss, and wavelength scalability, making it meaningful for long-haul MDM transmission.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Yiwei Qiu, Chenliang Ding, Gangyao Zhan, Mengdi Luo, Jisen Wen, Mengbo Tang, Chun Cao, Wenjie Liu, Liang Xu, Bihu Lv, Dazhao Zhu, Cuifang Kuang, Xu Liu
Summary: This article proposes a novel method to simultaneously reduce the axial and lateral feature sizes of PPI-DLW. By employing a pseudo 3D hollow focus, a suspended nanowire with an isotropic 30-nm feature size was realized, thereby improving the capabilities of PPI-DLW for fabricating arbitrary 3D structures.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Manzhuo Wang, Jianbo Yue, Zhentao Yao, Tingyu Liu, Xiaoqiang Sun, Yuanda Wu, Daming Zhang
Summary: A silica waveguide 1×8 thermo-optic switch consisting of cascaded three-stage Mach-Zehnder interferometers (MZIs) is successfully demonstrated. The switch utilizes a multimode interference (MMI) coupler in the MMI-MZI 1×2 switch unit for its wavelength insensitivity and favorable fabrication tolerance. The switch design and optimization is based on the beam propagation method (BPM) and implemented using standard CMOS technologies. Experimental results show that the switch meets the requirements for insertion loss and crosstalk at 1550 nm wavelength, and also performs well in a wide wavelength range.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
H. M. de la Cruz, E. D. Hernandez-Campos, E. Ortiz-Ricardo, A. Martinez-Borquez, I. Rosas-Roman, V. Contreras, G. Ramos-Ortiz, B. Mendoza-Santoyo, Cecilia I. Zurita-Lopez, R. Castro-Beltran
Summary: Acoustic levitation is an important contactless manipulation technique in various fields. This study presents an affordable phased-array levitator that can stably trap micrometer dye-doped droplets in the air, enabling the creation of microlasers. The levitated microlasers exhibit comparable optical lasing features to On-a-Chip devices, with a maximum Q-factor of approximately 105 and a minimum lasing threshold of approximately 150 nJ cm-2.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Yuqi Wang, Zilong Zhang, Suyi Zhao, Wei He, Xiaotian Li, Xin Wang, Yuchen Jie, Changming Zhao
Summary: This paper investigates the impact of localized defects in SLM devices on structured light generation and demonstrates the reconstructed light field results under different defect states using CGH loaded onto the DMD. The results show that central defects have minimal influence on the reconstructed light field, while edge defects have a significant impact. This study expands the application scenarios for the generation of structured light beams with SLM.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Ashraf A. A. Beshr, Hossam El-Din Fawzy, Ehab A. A. Eldin, Jong Wan Hu, Fathi A. Abdelmgeed
Summary: This paper introduces the application of digital measuring techniques, specifically Digital Close Range Photogrammetry (DCRP), in the detection of deformation in post-tensioned structural elements (PTSEs). The use of digital equipment and a terrestrial laser scanner (TLS) allows for highly accurate monitoring of PTSE camber, with deviations not exceeding 0.01 mm.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Shihao Gou, Danping Huang, Shipeng Liao, Fan Luo, Yang Yuan, Liang Liu, Xiaomei Wen
Summary: This paper proposes an online intelligent detection method for cable pitch defects in the field of optical cable manufacturing. The method utilizes a multi-sensor fusion image acquisition platform and deep learning technology to achieve accurate detection of pitch defects in optical cables.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Tun-Yao Hung, David W. U. Chan, Ching-Wei Peng, Chi-Wai Chow, Hon Ki Tsang
Summary: We present the first experimental demonstration of a high-capacity short-reach optical communication link which utilizes LSTM and DNN to achieve 300 Gbit/s 8-level pulse amplitude modulation (PAM8) generated by a single microring modulator. The experimental results show that 300 Gbit/s and 270 Gbit/s PAM8 modulation can be achieved at back-to-back and after 1 km transmission respectively.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Long Zhang, Li Pei, Jianshuai Wang, Jingjing Zheng, Kaihua Hu, Zhiqi Li, Tigang Ning, Jing Li, Li Zhong, Ruisi He
Summary: The amplification of long-haul mode division multiplexing (MDM) transmission systems is currently achieved through three steps, which can result in complexity and degraded transmission performance. To address this issue, this paper proposes an in-line few-mode erbium-doped fiber amplifier (FM-EDFA) based on cladding pumping, which enables simultaneous amplification and transmission in MDM systems. Experimental results demonstrate that the in-line FM-EDFA has excellent performance and shows great potential for practical long-haul transmission systems.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Chong Wang, Miaomiao Li, Jiahao Yang, Bingli Zhu, Jianghao Han, Wenbin Dang
Summary: This paper introduces the design of drive circuits using step recovery diodes and RF bipolar transistors to produce narrow pulse lasers, achieving the reduction of system size, power consumption and cost.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Ziqian Zhang, Liangyu Zhao, Chaorun Si, Yang Tian, Shilin Xu
Summary: A Hastelloy C276 coating was prepared on a martensitic stainless-steel substrate using laser melting deposition, resulting in a coating with high resistance to cavitation erosion. The coating exhibited a thick, progressively changing grain morphology from bottom to top, and the grains grew in a specific angle to the substrate plane. A compositional mixing zone was formed at the interface, forming a stable metallurgical bond. The coating showed a significantly improved hardness and enhanced resistance to cavitation erosion compared to the substrate.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Cui-Hong Li, Chao-Xiong He, Yuan-Yuan Ma, Jin-Chuan Wang, Ying Dong, Shao-Chong Zhu, Xiao-Wen Gao, Hui-Zhu Hu
Summary: In this paper, a non-contact optical measuring method for characterizing nanoparticles using optical tweezers is presented. The method relies on the optical polarization and scattering of nanoparticles, providing insights into both shape and size parameters. Experimental results show that the method can accurately measure the shape and size of nanoparticles, making it an effective tool for identifying and studying individual nanoparticles.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Magdalena Zieba, Cuma Tyszkiewicz, Katarzyna Wojtasik, Krystian Pavlov, Pawel Chaber, Ewa Gondek, Jacek Niziol, Roman Rogozinski, Pawel Kielan, Pawel Karasinski
Summary: This work presents a study on low-loss waveguide layers for planar evanescent wave sensor applications. Crack-free SiOx:TiOy composite layers with refractive indices of approximately 1.65 were fabricated using a sol-gel method and dip-coating technique. The fabricated layers exhibited good waveguide properties and optical homogeneity.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Yali He, Jiao Tang, Zhongyang Li, Yaowu Hu
Summary: In this paper, a lithography-free broadband absorbing metasurface consisting of Ag nanoparticles with ultrafine nanogaps is demonstrated. The experimental results and numerical simulations show that the horizontally compressed Ag nanoparticles possess smaller nanogaps for high sensitivity, uniformity, and stability. The novel substrate also exhibits insensitivity to the incident or observation angle in an ambient environment and has promising practical applications.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Linqing Li, Chengwei Yang, Zhuo Wang, Kun Xiao, Rui Min
Summary: In this study, a stretchable polymer optical fiber with a sandwich structure was proposed for sleep monitoring. The fiber improved the pressure sensitivity of the mattress and enabled the measurement of respiratory rate, heart rate, and body motion information.
OPTICS AND LASER TECHNOLOGY
(2024)
