Article
Optics
Liuyuan Tao, Fei Wang, Guangqiong Xia, Zhengmao Wu
Summary: A tunable single-longitudinal-mode (SLM) narrow linewidth Brillouin fiber laser based on parity-time (PT) symmetry is proposed and demonstrated. In the proposed scheme, the SLM operation is achieved through the dual selecting-mode mechanism. A narrow-band gain curve induced by stimulated Brillouin scattering (SBS) is used as a filter for selecting mode preliminary, and a PT-symmetric structure is formed by using a Sagnac loop to break the PT symmetry and enable SLM oscillation.
LASER PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Abtahi, Reza Soltanian, Pin Long, Qammar Goher, Francois Legare
Summary: This paper presents an ultra-wide and high-power consecutive tunable mode-locked all-fiber laser source that covers the spectral range from 1020 to 1090nm, with pulse-width varying from 60 to 122ps. A power of about 2.5W was achieved at 1040nm with a high side mode suppression ratio and signal-to-noise ratio.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Qian Zhang, Tao Wang, Jieru Zhao, Jingyang Liu, Yahui Wang, Jianzhong Zhang, Lijun Qiao, Mingjiang Zhang
Summary: The proposed dual-adaptive denoising algorithm utilizes CEEMD and PSO to improve the SNR of BOTDA sensor, optimize the accuracy of BFS, and does not require condition prediction, providing an adaptive and high-SNR demodulation scheme by simply modifying the software.
IEEE SENSORS JOURNAL
(2021)
Article
Computer Science, Information Systems
Chien-Hung Yeh, Yu-Ting Lai, Li-Hung Liu, Han-Shin Ko, Yi-Ting Lai, Yi-Chi Chen, Chi-Wai Chow
Summary: This paper presents and investigates an erbium-doped fiber octa-ring laser system with continuous-wave tunability and stable single-longitudinal-mode output. The octa-ring configuration enables mode-filtering based on the Vernier effect, providing dense side-mode suppression and gain extension. The laser's wavelength-tuning bandwidth from 1519.0 to 1575.0 nm is achieved using a conventional C-band EDF gain-medium. Additionally, the output power, stability, optical signal to noise ratio (OSNR), and laser linewidth of the demonstrated EDF laser are discussed.
Article
Engineering, Electrical & Electronic
Mark Pelusi, Takayuki Kurosu, Takashi Inoue, Shu Namiki
Summary: This paper evaluates the benefits of Brillouin amplification in coherent communication applications using 64-QAM signals. By utilizing the narrow gain bandwidth, it enhances the carrier to noise ratio (CNR) of noisy spectral lines, resulting in improved performance for signal carriers and pilot tones.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Ke Wu, Xiaoguang Zhao, Thomas G. Bifano, Stephan W. Anderson, Xin Zhang
Summary: Auxetics, with a negative Poisson's ratio, are utilized to design tunable metamaterials for MRI applications, enabling frequency tunability through electromagnetic interaction modification. The metamaterials fabricated using 3D printing technology show an approximate 20 MHz frequency shift during deformation, resulting in a significant boost in MRI signal-to-noise ratio.
ADVANCED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Bengisu Unalan, Murat Yucel
Summary: This study introduces two novel designs aiming to achieve a high OSNR in the 1526-1568 nm range. Through experimental observations, it has been determined that these designs offer higher OSNR values compared to conventional designs.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Hua Shun Wen, Bo Rui Xu, Kun Peng Zhai, Jia Zheng Sun, Jian Wang, Xin Hao Du, Ya Jin, Wei Chen, Wei Li, Ning Hua Zhu, Ming Li
Summary: The study presents a single passband microwave photonic filter with unprecedented performance, offering ultra-high spectral resolution and stability, and operating over a wide spectral range. By breaking the amplitude equality using Brillouin dynamic grating, this record performance opens up new avenues for the development of high-performance microwave photonic systems.
Article
Engineering, Electrical & Electronic
Harith Ahmad, Siti N. Aidit, Muhamad Z. Samion, Siyi Wang, Yu Wang, Jayanta K. Sahu
Summary: The study presents a tunable dual-wavelength Brillouin-bismuth fiber laser with stable dual-wavelength lasing and the potential for low phase noise source for microwave generation, demonstrating tuning capability at different frequency spacings.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Physics, Applied
Jingcheng Shang, Jianshu Feng, Tao Li, Tianli Feng, Yizhou Liu, Shengzhi Zhao, Yuefeng Zhao, Yuzhi Song
Summary: A high-power, noise-like pulse Tm-doped fiber oscillator is proposed in this study, utilizing the nonlinear polarization rotation method. The experimental results match well with the theoretical model simulations, demonstrating the effectiveness of the proposed system.
APPLIED PHYSICS EXPRESS
(2021)
Article
Engineering, Electrical & Electronic
Li Shen, Zhiyong Zhao, Can Zhao, Hao Wu, Chao Lu, Ming Tang
Summary: A method for improving spatial resolution using measurements obtained with long pulses has been developed for Brillouin optical time domain analysis (BOTDA) systems utilizing the total variation deconvolution algorithm. The impact of Brillouin gain temporal envelope frequency dependency on the deconvolution algorithm results is thoroughly analyzed, with DPP technique utilized to eliminate BFS distortion. The proposed method allows for distortion-free Brillouin distributed sensing with higher spatial resolution and enhanced SNR.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Qinglin Wang, Qing Bai, Yuting Liu, Jingxian Wang, Yu Wang, Baoquan Jin
Summary: A spatial-adaptive image denoising method is proposed to enhance the signal-to-noise ratio of BOTDR without compromising spatial resolution. The method includes a denoising network structure and a high-similarity dataset generation method to reduce noise and improve denoising effect. Experimental results show that the SAID method achieves a SNR enhancement of 21.92 dB with a processing time of 2.48 s, outperforming the conventional 10000 times trace averaging method which only achieves a 9.98 dB enhancement but requires 174.52 s. Therefore, the SAID method is proven to be advantageous in SNR enhancement and data processing speed without sacrificing spatial resolution.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
A. W. Al-Alimi, N. A. Cholan, Y. G. Shee, M. T. Alresheedi, C. S. Goh, M. A. Mahdi
Summary: This work presents a tunable multiwavelength Brillouin-Raman fiber laser operated at an ultralong wavelength band. By utilizing special fiber and pump powers, stable multi wavelength generation and tuning can be achieved with good performance and flexibility.
RESULTS IN PHYSICS
(2022)
Article
Optics
Xinrui Jiang, Baojian Wu
Summary: An all-fiber few-mode erbium-doped fiber amplifier (FM-EDFA) was constructed using few-mode isolator wavelength division multiplexers (FM-IWDMs) as signal and pump light multiplexing or demultiplexing functions. The gain performance of the FM-EDFAs under different pumping cases was investigated experimentally. It was found that for LP01, LP11e, and LP11o-mode signals, the minimum differential mode gain (DMG) of 0.14 dB can be achieved by forward LP11e and LP11o-mode pumping. The equivalent input spectrum method was proposed to experimentally simulate the cascade FM-EDFA systems, and it was shown to support long-distance transmission of 100 Gb/s DPQPSK signal theoretically.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
M. N. Malik, N. Zhang, V Toccafondo, C. Klitis, M. Lavery, A. Sgambelluri, J. Zhu, X. Cai, S. Yu, G. Preve, M. Sorel, A. Bogoni, M. Scaffardi
Summary: A four-orbital angular momentum (OAM) modes converter has been implemented and characterized with the cascade of an OAM demultiplexer and an OAM multiplexer. The OAM multiplexer is based on four tunable OAM emitters allowing the selection of the emitted OAM mode order by thermal tuning. The completely passive OAM demultiplexer consists of the cascade of two patterned refractive elements followed by a lens and can work independently of the input signal's polarization.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Orthopedics
Hongjiang Yang, Bo Li, Cong Xing, Shijie Gao, Wenbiao Zhu, Yang Xiong, Xiuzhi Ren, Guangzhi Ning
Summary: Compared to other methods, the use of telescopic rods in femoral surgery for OI patients resulted in lower revision rates and longer implant survival periods. This is primarily due to the significant decrease in the incidence of refracture, deformity, and implant-related complications with the use of telescopic rods.
BMC MUSCULOSKELETAL DISORDERS
(2023)
Article
Oncology
Guang-Yi Sun, Jing Zhang, Bing-Zhi Wang, Hao Jing, Hui Fang, Yu Tang, Yong-Wen Song, Jing Jin, Yue-Ping Liu, Yuan Tang, Shu-Nan Qi, Bo Chen, Ning-Ning Lu, Ning Li, Ye-Xiong Li, Jian-Ming Ying, Shu-Lian Wang
Summary: In this study, the prognostic value of immune markers in non-metastatic triple-negative breast cancer (TNBC) was investigated. The results showed that stromal TILs, CD8(+)T cells, FOPX3(+)T cells, and PD-1 were positively correlated with disease-free survival (DFS) and had independent prognostic value in the prognostic model.
BRITISH JOURNAL OF CANCER
(2023)
Article
Chemistry, Physical
Yi Wang, Yihe Zhang, Rory Gover, Jie Yang, Yingyan Zhang
Summary: Graphene has excellent physical properties, but its two-dimensional structure limits its application as reinforcing fillers in composites. In this study, an origami technique was used to improve the flexibility of graphene. Molecular dynamics simulations showed that graphene origami (GOri) can withstand higher loads and indentation depths than pristine graphene. The flexibility and strength of GOri can be further enhanced in the bilayer format. This study provides insights into the failure mechanisms and mechanical properties of GOri for graphene-based impact protection applications.
Article
Cell Biology
Lei Xu, Quan Zeng, Liqing Liang, Zhou Yang, Mingyi Qu, Huilin Li, Bowen Zhang, Jing Zhang, Xin Yuan, Lin Chen, Zeng Fan, Lijuan He, Xue Nan, Wen Yue, Xiaoyan Xie, Xuetao Pei
Summary: Blood supply shortages, especially rare blood types, pose a threat to the current medical system. Research on stem cells has led to the production of universal red blood cells from iPSCs, which has become a focus in transfusion medicine.
CELL PROLIFERATION
(2023)
Article
Chemistry, Physical
Xianchao Wang, Zehao Zang, Chunyan Fan, Yintao Zhang, Xiang Li, Lanlan Li, Xiaofei Yu, Xiaojing Yang, Zunming Lu, Xinghua Zhang
Summary: In this study, group IB metals including gold, silver, and copper were used to enhance the performance of cobalt hydroxide (Co(OH)(2)) catalyst for the oxygen evolution reaction (OER) via electrodeposition method. The formation of Ag-Co(OH)(2) heterostructure optimized the electronic structure through interfacial interactions and improved the charge transport capacity and adsorption of hydroxyl species, thus accelerating the OER kinetics and enhancing the inherent catalytic activity.
Article
Engineering, Environmental
Yixiang Li, Bin Yao, Yuxin Chen, Yaoyu Zhou, Xiaoguang Duan
Summary: This paper systematically reviews the applications of metal-organic frameworks (MOFs) in electro-Fenton (EF) systems. The advantages and disadvantages of homogeneous and heterogeneous EF were summarized, and the influencing factors of EF system were discussed. Different series of MOFs and the methods to improve their catalytic activity and water stability were introduced. Finally, the future application of MOFs in EF systems was prospected.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Baoming Shan, Yanshuo Pang, Qi Zheng, Qilei Xu, Yinglong Wang, Zhaoyou Zhu, Fangkun Zhang
Summary: In this study, a dynamic control scheme using an improved PID-ANFIS system is proposed for real-time measurement and control of product composition in extractive distillation. The ANFIS algorithm is optimized by genetic algorithm and particle swarm optimisation to enhance its performance. The control scheme of PSO-optimized PID-ANFIS demonstrates superior dynamic performance, faster response time, and smaller transient values compared to other control schemes.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Environmental Sciences
Yujie Shi, Yanjian Wan, Yan Wang, Yuanyuan Li, Shunqing Xu, Wei Xia
Summary: This study aims to fill the data gap regarding the contamination of the Yangtze River by Fipronil (FP) and its transformation products (FPs). FPs concentrations significantly increased from the upper to the lower reaches of the river, with an increase of 13-15% for every 100 km. The urban region and wet season had higher FPs contamination. Human exposure risk through water ingestion was acceptable, but ecological risk assessment showed a moderate to high risk posed by FPs. Regular monitoring of FPs in the Yangtze River is necessary due to their high ecological risk.
Article
Integrative & Complementary Medicine
Qiao-li Zhang, Min Ge, Cheng Chen, Fu-dong Fan, Yan Jin, Ning Zhang, Lei Wang
Summary: This study aimed to evaluate the feasibility and safety of Liuzijue exercise (LE) on the clinical effect of patients after cardiac surgery. The results showed that LE can safely and effectively improve lung function, respiratory muscle strength, daily life activities, and relieve anxiety in patients after cardiac surgery.
CHINESE JOURNAL OF INTEGRATIVE MEDICINE
(2023)
Article
Physics, Multidisciplinary
Yang Liu, Songtai Lv, Yang Yang, Haiyuan Zou
Summary: Concepts of complex partition functions and Fisher zeros provide statistical mechanisms for finite temperature and real-time dynamical phase transitions. These concepts can also be extended to quantum phase transitions. By identifying Fisher zeros on lines or closed curves, we can understand their connection with domain-wall excitations or confined mesons in the one-dimensional transverse field Ising model. The crossover behavior of the Fisher zeros gives us a fascinating insight into criticality near the quantum phase transition, allowing us to quantitatively determine the excitation energy scales. Our results are confirmed through tensor network calculations, showing a clear signal of deconfined meson excitations when the closed zero curves are disrupted. This study sheds light on the significant features of Fisher zeros in quantum phase transitions and opens up new possibilities for exploring quantum criticality.
CHINESE PHYSICS LETTERS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Shimin Yu, Yinping Tian, Yan Wei, Mengge Feng, Sensen Li, Guoyong Tong, Zhouqing Yu, Yunxiao Wang, Richard J. J. Miron, Yufeng Zhang, Yulan Wang, Zaibo Yang
Summary: The effects of horizontal platelet-rich fibrin (H-PRF) bone block in sinus augmentation were verified in a rabbit model, showing that the H-PRF bone block group had higher vertical bone gain, bone density, trabecular number, trabecular thickness, and lower trabecular separation compared to the deproteinized bovine bone mineral (DBBM) group. Furthermore, H-PRF bone block promoted angiogenesis, bone formation, and bone remodeling.
CLINICAL ORAL IMPLANTS RESEARCH
(2023)
Article
Neurosciences
Liyuan Zhang, Zhiyuan Ma, Ying Yu, Bao Li, Shuicai Wu, Youjun Liu, Gerold Baier
Summary: Low-voltage fast (LVF) seizure-onset, observed frequently in temporal lobe seizures, is characterized by deep temporal areas, such as the hippocampus, showing peak amplitude. However, the specific transition mechanisms between normal hippocampal rhythmic activity and LVF seizure-onset remain unknown. Optogenetic modulation has emerged as a noninvasive strategy for controlling epileptic hyper-excitability in both in vitro and in vivo settings. This study combines biophysical modeling and optogenetic intervention to investigate the dynamics of LVF and explore potential control mechanisms. The findings suggest that the cooperative effects of excessive extracellular potassium concentration and synaptic links can induce different types of hippocampal discharges, resulting in transitions from gamma oscillations to LVF seizure-onset. Optogenetic stimulation reveals that the excitatory control of principal neurons is more effective in modulating the epileptic network than targeting inhibitory interneurons. The developed network model provides insights into the underlying principles of LVF and the effects of optogenetic neuromodulation, guiding future treatments for specific types of seizures.
COGNITIVE NEURODYNAMICS
(2023)
Article
Biology
Ruyu Liu, Zhengzhe Liu, Jiaming Lu, Guodao Zhang, Zhigui Zuo, Bo Sun, Jianhua Zhang, Weiguo Sheng, Ran Guo, Lejun Zhang, Xiaozhen Hua
Summary: We propose a sparse-to-dense coarse-to-fine depth estimation solution for colonoscopic scenes based on the direct SLAM algorithm. Our solution utilizes scattered 3D points obtained from SLAM to generate accurate and dense depth, and combines a deep learning-based depth completion network and a reconstruction system to enhance the depth map and reconstruct a detailed 3D model of colons. Experimental results demonstrate the effectiveness and accuracy of our method.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Article
Chemistry, Applied
Mengjie Geng, Xumei Feng, Xixi Wu, Xiangyun Tan, Zengnan Liu, Lijia Li, Yuyang Huang, Fei Teng, Yang Li
Summary: A core-shell structure based on soy protein isolate (SPI) and pectin was constructed as a delivery system for vitamins C and E. The SPI-vitamin-pectin complex formed at pH 4.0 showed better encapsulation efficiency and larger particle size compared to that formed at pH 7.0. Additionally, the addition of vitamin C enhanced the encapsulation efficiency of vitamin E and increased the antioxidant properties of the system.
Article
Energy & Fuels
Yarong Bai, Yaqin Hou, Qiaoyan Li, Xiaojin Han, Haiqiang Wang, Zhongbiao Wu, Zhanggen Huang
Summary: Amorphous metal oxides (FeOx-Mn0.1Oy) with large surface areas and excellent redox properties were prepared for the selective catalytic reduction of NOx by NH3. The catalyst exhibited higher adsorption and activation ability for O2 and NO, enhancing catalytic activity at low temperatures. The incorporation of Mn into FeOx species inhibited crystallization, resulting in increased surface area and acid sites. Additionally, the presence of manganese increased oxygen vacancies, reducing the activation energy and enhancing the redox property of the catalyst. The reaction mechanism was proposed based on in situ DRIFTs experiment results.
