Article
Optics
Yu Zhou, Shanshan Li, Jiaxing Gao, Yifan Qin, Yu Zhang, Yaxun Zhang, Zhihai Liu, Libo Yuan
Summary: In this paper, an all-fiber, rate-controllable, rotary micromotor based on fiber optical tweezers is reported using laser-induced thermal convection. Simulation results demonstrate the feasibility of this method. Experimental results show that the microparticle rotation rate varies from 12 to 80 rpm depending on the incident laser power. This rotary micromotor has potential applications in microfluidic pumping, biopsy, micromanipulation, etc.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Shuzhang Liang, Yuqing Cao, Yuguo Dai, Fenghui Wang, Xue Bai, Bin Song, Chaonan Zhang, Chunyuan Gan, Fumihito Arai, Lin Feng
Summary: A simple versatile optoelectronic tweezer (OET) system for manipulating microparticles with different sizes has been proposed. The system can manipulate particles ranging from 2 μm to 150 μm in diameter, and perform various functions such as sorting, rotation, and assembly without generating excessive heat that could damage bioparticles. The non-contact manipulation reduces operating process and contamination, showing potential for controlling non-contaminated cell interaction and micro-nano manipulation in the future.
Article
Materials Science, Multidisciplinary
Neng Ren, Chinnapat Panwisawas, Jun Li, Mingxu Xia, Hongbiao Dong, Jianguo Li
Summary: The mechanism of freckle formation in single crystal superalloys is revealed, indicating that dendritic fragments are the root cause of freckle grains, not new grains. Simulation results also demonstrate the impact of operating parameters on solute distribution and dendritic structure.
Article
Biochemical Research Methods
Zahra Hashemi Shahraki, Mahdi Navidbakhsh, Robert A. Taylor
Summary: This study introduces a new numerical simulation approach to accurately model particle migration in inertial microfluidic devices, providing a potential pathway for optimizing the efficiency and purity of cell and particle sorting in biotechnology applications.
Article
Thermodynamics
D. Barrera-Roman, A. S. Ortiz-Perez, E. S. Durazo-Romero, J. B. Sosa-Coeto, A. Acuna-Ramirez, I Perez-Reyes
Summary: The study found that slippage in horizontal walls affects the linear hydrodynamic flow stability of a shallow fluid layer induced by an inclined temperature gradient, decreasing stable areas but promoting the appearance of the oscillatory transverse mode in moderate to high Prandtl numbers.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Physics, Multidisciplinary
Leiqi Yuan, Shufan Zou, Yantao Yang, Shiyi Chen
Summary: In this study, a novel strategy is proposed to enhance heat transfer in convection turbulence. By introducing a standing-wave type boundary deformation, flow modulation can be achieved when the amplitude is comparable or larger than the boundary-layer thickness. The heat-flux enhancement primarily occurs in the near-wall regions affected by the boundary deformation at large wave numbers. The findings suggest that oscillating deformations of the boundary can effectively break the boundary layers and open new possibilities for modulating convection turbulence.
PHYSICAL REVIEW LETTERS
(2023)
Article
Mechanics
Krishan Chand, Mukesh Sharma, Arnab Kr De
Summary: This numerical investigation delves into the impact of multiscale roughness on heat flux and near-wall dynamics in turbulent Rayleigh-Benard convection. Results show that the penetration of roughness peaks through the thermal boundary layer can be categorized into three regimes, with heat flux continuing to increase even when all peaks exceed the boundary layer. The formation of smaller multiple rolls due to the tall roughness favors better fluid mixing and enhances heat flux, demonstrating the significance of the study in understanding convective heat transfer processes.
Article
Multidisciplinary Sciences
Mohamed Bechir Ben Hamida, Mohammad Hatami
Summary: In this study, a finned micro-channel design for LED cooling was optimized using a nanofluid and geometry variables to enhance heat transfer efficiency. The results showed that the length of the fin had the most significant impact on the Nusselt number, with Al2O3 nanoparticles at phi=0.05 providing the greatest heat transfer value. Different fin arrangements increased nanofluid temperature by up to 6.5%, improving the LED cooling process.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Laichen Liu, Feng Lin, Chengzhen Qin, Hong Zhong, Tian Tong, Runjia Li, Hongzhen Yan, Qiaozhen Wang, Peihang Li, Dong Liu, Chong Wang, Jiming Bao, Zhiming Wang
Summary: This study demonstrates a liquid Tesla thermomagnetic engine and reports the observation of thermomagnetic convection in a ferrofluid on a free surface. These findings not only unveil the unique properties of ferrofluid but also provide a new platform for studying complex fluid dynamics and thermomagnetic convection.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Analytical
Bradley Khanthaphixay, Lillian Wu, Jeong-Yeol Yoon
Summary: Surveillance of viral pathogens is crucial for preventing widespread disease outbreaks, and portable and reliable biosensors are essential for proactive measures. Polymeric microparticles have become popular as they can be used as labels for detection and for capturing viruses. This review cataloged recent investigations on polymeric microparticle-based detection platforms across different virus families, analyzing their strengths, weaknesses, and the types of receptors used.
Article
Computer Science, Interdisciplinary Applications
Francesca Pelusi, Matteo Lulli, Mauro Sbragaglia, Massimo Bernaschi
Summary: TLBfind is a GPU code for simulating the hydrodynamics of droplets and dynamic temperature field. It employs a two-dimensional multi-component lattice Boltzmann model to simulate the evolution of finite-size droplets in a concentrated emulsion in a thermal convective state. The code allows for adjustable droplet concentration and measurement of various physical observables characterizing the flow and droplets.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Huaying Chen, Haixu Meng, Zhenlin Chen, Tong Wang, Chuanpin Chen, Yonggang Zhu, Jing Jin
Summary: This paper presents a microfluidic device for size sorting and in situ clonal culture of single cells. Experimental results show that the device can successfully sort the cells into different size ranges and perform time-lapse imaging during in situ culture.
Article
Computer Science, Interdisciplinary Applications
Robert Dienemann, Frederik Schewe, Ali Elham
Summary: The authors demonstrate the capability of Altair OptiStruct(TM) to optimize the layout of flow channels for forced convection, with a specific application example of cooling automotive battery packs. By optimizing the layout, a uniformly low temperature distribution and low mechanical losses in the flow can be achieved.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Chemistry, Multidisciplinary
Chenglong Wang, Fan Meng, Luyang Qiao, Yuyan Xie, Xin Liu, Jinhuan Zheng
Summary: A self-lubricating hydrogel filament was successfully achieved using a blue-light photopolymerization system with CQ/DPI as photoinitiators, AM/DMAA as monomers, PEGDA as a cross-linker, and lecithin as a lipid lubricant. The physical cross-linking effect between lecithin and the poly(DMAA/AM) network improved the polymerization properties and elasticity, while a lipid-based boundary layer at the hydrogel surface contributed to its self-lubrication. The extruded hydrogel filaments showed excellent mechanical properties and weavability, making them suitable for applications in soft robotics and bioengineering.
Article
Crystallography
Sergey A. Shvetsov, Tetiana Orlova, Alexander Emelyanenko
Summary: Local illumination with a light beam induces thermo-orientational processes in a frustrated chiral nematic film with a free surface, creating an adaptive platform for the collection, translation, and rotation of suspended spherical microparticles. This approach has potential applications in soft robotics, micro-object delivery systems, and other micro- and nanotechnologies.
Article
Optics
Ziyang Xiong, Chunying Guan, Zhenyu Duan, Tailei Cheng, Peng Ye, Jing Yang, Jinhui Shi, Jun Yang, Libo Yuan, K. T. Grattan
Summary: A magnetic field sensor based on a side-polished two-core fiber has been developed, allowing for the measurement of magnetic field intensity. The sensor has advantages such as low cost, strong anti-interference ability, simple structure, and high stability, making it suitable for various applications.
Article
Engineering, Electrical & Electronic
Shuaifei Tian, Yiping Tang, Yibo Zhang, Ran An, Yonggui Yuan, Yunlong Zhu, Fanyang Dang, Jun Yang, Zhangjun Yu, Yuncai Wang, Yuwen Qin
Summary: A dual cross-axis interference polarization-maintaining fiber interferometer (DCAI-PMFI) is proposed for simultaneous measurement of strain and temperature. The sensitivity matrix for simultaneous measurement of temperature and strain is constructed, and the decoupling performance of the two parameters can be optimized by adjusting the length ratio of two arms. Experimental results demonstrate that the proposed sensor can effectively mitigate the crosstalk between strain and temperature, making it suitable for various interferometric fiber sensors.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yibo Zhang, Wei Jin, Yu Zhang, Zhihai Liu, Yonggui Yuan, Zhangjun Yu, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: This paper proposes a fast phase regulation method for the hybrid PDH multiplexing scheme based on space division multiplexing and time division multiplexing. The method allows for the reconstruction of the error signal points required for closed-loop control within a time period of less than 20 us using a phase rotation algorithm. The paper also presents the relationship between the multiplexing scale and parameters selection, showing that the system can achieve a larger multiplexing scale with appropriate parameters selection. A multi-channel strain array with a resolution better than 10 pe/root Hz@1 Hz over a 50 Hz band per channel has been realized, demonstrating its potential usage in the field of large-scale quasi-static strain measurement and earthquake observation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Tingyi Zhu, Cuofu Lin, Jun Yang, Zhangjun Yu, Pengbai Xu, Kunhua Wen, Yuncai Wang, Yuwen Qin
Summary: In this paper, a spectral splicing method (SSM) for distributed strain sensing based on optical frequency domain reflectometry (OFDR) is proposed and demonstrated, achieving km level measurement length, RE level measurement sensitivity, and 104 RE level measurement range. The SSM replaces the centralized data processing method with a segmented processing method based on cross-correlation demodulation, achieving precise splicing of the spectrum corresponding to each signal segment by spatial position correction, thus enabling strain demodulation. The segmentation effectively suppresses phase noise and expands the sweep range, while spatial position correction rectifies the position error and extends the strain range.
Article
Optics
Qinqin Zhuang, Yicheng Lin, Cuofu Lin, Zhangjun Yu, Yonggui Yuan, Jun Yang, Kunhua Wen, Pengbai Xu, Yuncai Wang, Yuwen Qin
Summary: Optical frequency domain polarimetry (OFDP) is an emerging method for rapidly measuring distributed polarization crosstalk with a wide dynamic range. This Letter presents a solution to the trade-off between measurement length and dynamic range using a self-referenced unbalanced Mach-Zehnder interferometer. Experimental results demonstrate the method's ability to evaluate long polarization-maintaining fiber in rapidly changing environments, with a long distance capability (9.8 km), ultrawide dynamic range (107.8 dB), short measurement time (2 sec), and improved signal-to-noise ratio against ambient noise.
Article
Optics
Jilong Li, Yue Wang, Songnian Fu, Xiangzhi Xie, Meng Xiang, Feifei Yin, Yitang Dai, Jun Yang, Yuwen Qin
Summary: This study demonstrates a low-latency microwave photonic real-time Fourier transformation (RTFT) processing technique based on bandwidth slicing and equivalent dispersion. It achieves wide bandwidth spectrum analysis, high frequency resolution, high acquisition frame rate, and total latency of less than 200 ns.
Article
Optics
Mingyang Huang, Zhangjun Yu, Peijiong Li, Jun Yang, Kunhua Wen, Pengbai Xu, Yuncai Wang, Yuwen Qin
Summary: This paper presents an optical vector analyzer (OVA) based on orthogonal polarization interrogation and polarization diversity detection, which is used to measure the loss, delay, or polarization-dependent features of optical devices. Bayesian optimization is proposed as an online polarization error suppression method to improve the measurement reliability and efficiency. The OVA with online error suppression will be widely used in the production of optical devices, not just in the laboratory.
Review
Chemistry, Analytical
Junzhe Yu, Pengbai Xu, Zhangjun Yu, Kunhua Wen, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: This paper reviews the principles and applications of four optical seismic sensors in submarine seismology over submarine optical cables. The advantages, disadvantages, and current technical requirements are discussed. This review can serve as a reference for studying submarine cable-based seismic monitoring.
Review
Optics
Leiming Wu, Xixi Yuan, Yuxuan Tang, S. Wageh, Omar A. A. Al-Hartomy, Abdullah G. G. Al-Sehemi, Jun Yang, Yuanjiang Xiang, Han Zhang, Yuwen Qin
Summary: Sensing devices play a crucial role in various fields and their increasing demand has led to the development of sensing materials and methods. Tin+1CnTx MXenes have emerged as ideal candidates for sensing materials due to their exceptional properties. In this review, the application of Tin+1CnTx in different sensor categories is systematically summarized, and their potential in emerging intelligent and bionic devices is discussed. The future challenges and perspectives of MXene-based sensors are also presented, highlighting their potential in driving the development of new technologies.
Article
Engineering, Electrical & Electronic
Jun Yang, Chen Zou, Cuofu Lin, Yunlong Zhu, Yao Zhu, Fanyang Dang, Yonggui Yuan, Zhangjun Yu, Yuncai Wang, Yuwen Qin
Summary: The impact of noise on the point spread function in optical fiber frequency sweeping interferometry (OFFSI) systems is significant. This paper reviews the development of noise compensation methods and provides a reference for selecting appropriate compensation methods in different applications. Discussions are made on the noise impacts, including laser source phase noise, laser source intensity noise, and ambient noise. The most serious noise is the laser source phase noise, and comprehensive classification and analysis of compensation strategies are provided. Future trends and developments are also discussed.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Xiang Zhang, Jun Yang, Yanyu Qian, Zhuo Zhang, Xiaozhang Wang, Yaohui Xue, Yonggui Yuan, Yuncai Wang, Yuwen Qin
Summary: This paper proposes a distributed stress analysis method for fiber winding structures. Compared with the traditional single-layer method, the stress of each turn in the fiber stacking state is quantitatively calculated, including the inclination angle, endplate, and layer transition. BOTDA tested the internal stress at high spatial resolution, which is consistent with the distributed method. The results proved the attenuation of internal stress under fiber stacking state in different winding parameters. For the first time, quantitative analysis of the stress increase characteristics of layer transition has been realized. Lastly, the discussion of rewinding, tension dropout, and extrusion defects provides a non-destructive and rapid method for defect recognition and winding quality improvement.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Pengbai Xu, Yihao Peng, Kunhua Wen, Yuehui Sun, Xinyong Dong, Jun Yang, Yuwen Qin
Summary: This paper proposes a novel bending-loss-resistant distributed temperature and strain discriminative sensor that is based on a 98 mol% germania-doped few-mode fiber and a standard Brillouin optical time-domain analysis setup. In a proof-of-concept demonstration, distributed temperature and strain discriminative measurements were conducted under a bending radius of 0.6 cm, where the maximum temperature and strain deviation were 2.78 degrees C and 33.2 mu epsilon, respectively.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Qinqin Zhuang, Cuofu Lin, Zhangjun Yu, Kunhua Wen, Pengbai Xu, Jun Yang, Yuncai Wang, Yuwen Qin
Summary: A high-precision measurement of distributed polarization crosstalk (DPC) is necessary for developing devices with ultrahigh polarization extinction ratios. Optical frequency domain polarimetry (OFDP) is a novel method with a potential ultra-wide dynamic range for DPC measurement. This research solved the phase error problem induced by the laser frequency sweep nonlinearity to improve the measurement precision of weak polarization crosstalk and enhanced the dynamic range.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Veterinary Sciences
Jing Yang, Ming Li, Tianfei Yu
Summary: We report on the complete genome sequence of a recombinant MDPV strain YL08 isolated from a Muscovy duck in China in 2008. This study provides insights into the genetic diversity and virus evolution of MDPV strains.
THAI JOURNAL OF VETERINARY MEDICINE
(2022)
Article
Engineering, Electrical & Electronic
Haibo Zhu, Jun Yang, Haoliang Zhang, Zhangjun Yu, Xiaojun Zhang, Yunlong Zhu, Fanyang Dang, Yonggui Yuan, Yuncai Wang, Yuwen Qin
Summary: This article proposes a metrological traceability method for polarization extinction ratio (PER) ranging from 0 up to 70 dB, while the common method is limited to 50 dB. By designing and manufacturing a precision alignment coupling point, and using the rotation of polarization-maintaining fibers (PMFs), a traceability chain from the PER to the rotation angle is established, enabling accurate and controllable generation of any PER in the range of 0-70 dB.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
