Article
Multidisciplinary Sciences
Oleg F. Petrov, Konstantin B. Statsenko, Mikhail M. Vasiliev
Summary: The study focuses on the active Brownian motion of charged grains under laser irradiation, and demonstrates the occurrence of active Brownian motion during the transition of the grain monolayer from solid to liquid state. An analysis of motion characteristics, including mean-square displacement, linear displacement, and persistence length at different coupling parameters, is presented.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Nikolai G. Khlebtsov
Summary: This study derives two sets of analytical expressions for extinction, absorption, and scattering cross sections of small particles embedded in an absorbing host, one based on an improved electrostatic approximation and the other on a modification of the electrostatic approximation. The accuracy of the approximations is demonstrated through calculations for Au and Ag nanospheres in different host materials. The near-field scattering cross sections exhibit different scaling behaviors depending on host absorption, with an exception found for small particles where an increase in host absorption enhances the scattering peak.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Yijun Feng, Guohua Liu, Jinliang Xu, Kaiying Wang, Wenbin Mao, Guansheng Yao
Summary: Particle separation can be achieved by the fast dynamics of droplet impact on soap films. This viscous separation can be controlled in a deterministic manner by selectable impact parameters. This study is important for soft matter research and the study of droplets with colloid and surface chemistry.
Article
Chemistry, Physical
Natsuda Klongvessa, Christophe Ybert, Cecile Cottin-Bizonne, Takeshi Kawasaki, Mathieu Leocmach
Summary: In this study, the researchers investigate the behavior of active glasses, which are defined by relaxation times longer than the observation time. They demonstrate that there is a nonmonotonic response in the dynamics of active glass, and attribute it to activity enhanced aging.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Rauoof Wani, Ajaz Mir, Farida Batool, Sanat Tiwari
Summary: Rayleigh-Taylor instability (RTI) in strongly coupled plasmas is studied using two-dimensional molecular dynamics simulations. The growth rate of RTI decreases with increasing coupling strength due to the suppression effect of the caging mechanism. However, the presence of background charges enhances the growth rate of the instability. Additionally, an increase in the Atwood number leads to a stronger growth of the instability.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Shangyu Zhang, Jinan Zhai, Jian Dong, Wenjie Zhang, Linhua Liu
Summary: This paper investigates the extinction and attenuation of particles in an absorbing host, outlines existing extinction definitions, and shows the important influences of the host absorption on void extinction. The generalized operational definition is found to be equivalent to the recent effective medium method according to the theory of multiple scattering.
Article
Mathematics
Andre Schemaitat
Summary: We provide a concise proof of the strong self-absorption property of the Jiang-Su algebra by introducing and studying unitarily suspended endomorphisms of generalized dimension drop algebras. Additionally, we establish uniqueness and existence results for maps between dimension drop algebras and UHF-algebras.
JOURNAL OF FUNCTIONAL ANALYSIS
(2022)
Article
Physics, Fluids & Plasmas
Ankit Singh, Yashwant Singh
Summary: We studied the structure and dynamics of a binary mixture of colloidal particles dispersed in a solvent. By tracing out the solvent degrees of freedom, the system is reduced to an effective binary mixture of colloidal particles. The effective interactions between colloidal particles are determined by the bare potential and the solvent-induced interaction. We derived expressions for the effective potentials and pair correlation functions, and used them to analyze the cooperatively reorganizing clusters and relaxation processes. Our results show that the concentration of solvent plays a crucial role in controlling the microscopic structural ordering and glassy dynamics.
Article
Chemistry, Applied
Yang Chen, Juanmei Zeng, Wenchao Huang, Yuanmei Hu, Shunhua Li, Yunbao Jiang
Summary: In this study, a novel approach for fabricating NIR absorbing materials was developed based on stabilizing chromogenic radicals in lipid membranes. The use of biomimetic membranes as a platform enabled the formation of NIR optical vesicles with strong absorption and sensitive photoacoustic response. This method shows potential for bioanalytical applications by optimizing optical properties and functionalizing membrane surfaces under ambient conditions.
Article
Physics, Multidisciplinary
Peng Liu, Luhui Ning, Yiwu Zong, Fangfu Ye, Mingcheng Yang, Ke Chen
Summary: In this study, experiments and computer simulations were performed to investigate the effective interactions between like-charged colloidal tracers moving in a two-dimensional fluctuating background of colloidal crystal. The results show the presence of an effective attraction between the tracers, which weakens as the background lattice constant increases. This lattice-mediated attraction is a result of the minimization of free energy increase from deformation of the crystalline background due to the presence of diffusing tracers.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Fluids & Plasmas
Vikram Dharodi, Evdokiya Kostadinova
Summary: This paper presents a numerical study of ring structural transitions in strongly coupled dusty plasma confined in a ring-shaped (quartic) potential well with a central barrier. It is observed that increasing the amplitude of the potential leads to a transition from a ring monolayer structure to a cylindrical shell structure. The ring transition is reversible but exhibits hysteresis in the initial and final particle positions. Critical conditions for the transitions exhibit zigzag instabilities or asymmetries.
Article
Optics
Alexey Porfirev
Summary: A method for active pulling/pushing laser beams for light-absorbing particles in the air is proposed, utilizing cascaded diffractive optical elements to generate first-order Bessel beams. The beams create self-imaging light fields, forming optical bottle beam traps to confine particles inside dark regions. This approach can easily realize optical conveyors for transportation and investigation of dangerous substances, viruses, and living cells in future microdevices.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jian-Hao Zhang
Summary: Coupled-wire constructions are used to construct crystalline higher-order topological superconductors (HOTSCs) in two-dimensional interacting fermionic systems. The authors demonstrate the presence of Majorana corner modes on the edge of two representative examples of HOTSCs. Furthermore, they investigate the quantum phase transitions between different phases of 2D HOTSCs by tuning the interwire coupling.
Article
Physics, Fluids & Plasmas
Rahul Kumar Gupta, Raushan Kant, Harsh Soni, A. K. Sood, Sriram Ramaswamy
Summary: We demonstrate that self-propelled polar rods in an elastic medium on a substrate exhibit attraction and movement towards each other. By using a coarse-grained theory, we explain this effective attraction as a result of a moving point-force density that creates elastic strains in the medium, thereby reorienting other particles. Our findings provide insight into the interaction of motile cells in the extracellular matrix or in a supported layer of gel or tissue.
Article
Environmental Sciences
Xiaoling Ma, Wenlong Wang, Chenggong Sun, Jing Sun
Summary: The study focused on using [Bmim][PF6] ionic liquid to absorb toluene and acetone, showing promising adsorption performance and satisfactory thermal stability. Thermal distillation was proven to be a reliable regeneration route for [Bmim][PF6] with satisfying adsorption capacity after multiple cycles.
ENVIRONMENTAL POLLUTION
(2021)
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
Yu Zhang, Wenjie Su, Yifan Qin, Jinhua Mou, Shixiong Li, Wei Jin, Yaxun Zhang, Zhihai Liu, Libo Yuan
Summary: This paper presents a novel fiber liquid-pressure sensor, in which photopolymer glue is used to generate Fabry-Perot interference, resulting in high sensitivity and a wide measurement range. The sensor consists of a single-mode fiber and photopolymer glue, with the latter adhering to the fiber's end face and decomposed by a 405-nm laser to create an air channel. Experimental results show that the sensor has an average pressure sensitivity of 5.68 nm/kPa over 0.49-2.94 kPa and can maintain this sensitivity level across different pressure measurement ranges by using a 980-nm laser's radiation pressure to reset the air-liquid boundary.
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
Chunbiao Liu, Chunlan Liu, Yong Wei, Chen Shi, Rui Wang, Xingkai Wang, Puxi Ren, Yixiong Tang, Zhihai Liu, Yu Zhang
Summary: This Letter proposes a highly sensitive curvature sensor based on graded-index fiber, which can adjust the sensitivity by changing the light injection position of the fiber and identify the bending direction. This provides a new scheme for highly sensitive and directionally identifiable curvature measurement.
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.
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
Optics
Zhihai Liu, Xuhao Ji, Yifan Qin, Yu Zhang, Jinhua Mou, Yanyan Deng, Wei Liu, Yaxun Zhang, Libo Yuan
Summary: This paper introduces a surface plasmon resonance (SPR) sensor that uses a tapered silica fiber and a photopolymer coating to enhance refractive index (RI) detection. The sensor has high sensitivity, a broad RI detection range, and a small temperature response, making it potentially valuable for detecting and evaluating hepatic steatosis.
Article
Optics
Yong Wei, Chen Shi, Yonghui Zhang, Chunbiao Liu, Yixiong Tang, Puxi Ren, Chen Wang, Yu Zhang, Zhihai Liu
Summary: In this paper, a temperature-compensated optical fiber SPR microfluidic sensor based on micro-nano 3D printing is proposed. The sensor utilizes optical fiber micro-machining technology to design dual sensing areas for simultaneous collection and temperature compensation. It demonstrates excellent specificity and sensitivity for the detection of berberine biomolecules.
Article
Optics
Yaxun Zhang, Zhiliang Huang, Yuxin Liu, Wenmi Li, Xiaoyun Tang, Zhihai Liu, Yu Zhang, Libo Yuan
Summary: In this study, we propose a balloon-like optical fiber sensor with an anti-resonance mechanism for simultaneous measurement of displacement and temperature. The sensor has a compact structure and simple preparation, and exhibits high sensitivity to both displacement and temperature.
Article
Optics
Wei Jin, Yibo Zhang, Yifan Qin, Yu Zhang, Cunkai Lou, Jiaxing Gao, Shanshan Li, Zhihai Liu, Fengjun Tian, Libo Yuan
Summary: In this Letter, a high-strain resolution fiber laser-based sensor (FLS) using a novel optical phase-locked loop (OPLL) interrogation technique is introduced. The sensor achieves a strain resolution of 8.19 p epsilon/root Hz at 1 Hz and 35.5 p epsilon in 10s in the experimental demonstrations. The proposed OPLL interrogation provides a new approach for demodulating FLS and the sensor has great potential in geophysical research.
