Article
Physics, Applied
Zhixiong Gong, Michael Baudoin
Summary: Selective single beam tweezers offer great potential for microfluidics and microbiology, allowing for manipulation, assembly, and mechanical testing of microparticles, cells, and microorganisms. This study explores the trapping capabilities of focused beams numerically and reveals that 3D trapping of particles, droplets, and compressible microorganisms is possible, along with 2D trapping using particle resonances. The findings suggest that the use of high-frequency focused-beam tweezers with biocompatible functionalized PDMS particles could enable new acoustic force spectroscopy methods in previously inaccessible force ranges.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Hoang-Lam Pham, Thomas Alcaire, Sebastien Soulan, Delphine Le Cunff, Jean-Herve Tortai
Summary: Mueller matrix ellipsometry (MME) is a powerful tool for nanomanufacturing. In this study, a rigorous coupled-wave analysis (RCWA) method was proposed to efficiently simulate the optical responses of multilayer nanostructures. By computing the local scattering matrices and integrating them into the global matrix, the corresponding Mueller matrix can be simulated quickly. The results demonstrate significant numerical improvements, highlighting the effectiveness of the RCWA method in metrological studies of multilayer nanodevices.
Article
Optics
Dongjin Wu, Wanrong Gao, Ying Chang
Summary: This work presents a simplified cylinder-birefringence optical model of the human skin dermis and measures the polarization parameters of human fingernail skin. The accuracy and stability of the Mueller matrix polarization decomposition (MMPD) and the direct Mueller matrix (DMM) methods are compared under different incident and scattering angles. A significant contribution of this study is the use of a polarization-sensitive optical coherence tomography device to obtain the value of birefringence of the skin dermis from living human index finger nail images. The results provide a basis for selecting incident and scattering angles when measuring biological samples with fibrous structures in the future.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Yuxiang Jiang, Zhenhua Li
Summary: Polarization provides more information for the identification of target surface materials. The study investigates the polarization characteristics of randomly rough surfaces and analyzes the effects of roughness, refractive index, and incident angle on polarization. Key elements m34 and m43 are identified for material identification.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Acoustics
John A. Fawcett
Summary: This paper examines the scattering from a fluid-filled infinite cylinder with various smaller inclusions inside. Monte Carlo simulations are used to compute the average coherent field scattered from the cylinder and compared with results using an effective sound speed. An original formula for the effective sound speed is derived, and the backscattered spectra for a single realization of inclusions are compared with coherent fields predicted by effective medium theory.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Optics
Tongjun Bu, Conghui Shao, Yuanhuan Zhu, Tongyu Huang, Qianhao Zhao, Yanan Sun, Yi Wang, Hui Ma
Summary: In this paper, a fast-backscattering Mueller matrix imaging system was established to quantitatively probe the dynamic variation of the microscopic structure in biological tissues. The experimental results were confirmed by Monte Carlo simulations, showing that polarization imaging can effectively capture the dynamic variation in tissue microstructure, but faster speed needs to be considered when applied to living samples.
Article
Multidisciplinary Sciences
Wanrong Gao
Summary: This work introduces the concept of anisotropic dielectric susceptibility matrix of anisotropic medium for both nondepolarizing and depolarizing medium, providing a new way of analyzing light scattering properties of anisotropic media illuminated by polarized light. The explicit expressions for the elements of the scattering matrix, Jones matrix, and Mueller matrix are given, which may prove stimulating for researchers working on new methods for analyzing light scattering properties.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Yi-Hsin Lin, Yu-Jen Wang, Hung-Chun Lin, Ming-Long Lee, Po-Lun Chen
Summary: This paper investigates optical wave propagation through a curved-birefringent medium with anisotropic absorption. An optical model based on the Mueller matrix was built to predict the spatial distributions in light intensity and polarization. Experimental demonstrations using ellipsometry were also performed to showcase the use of the optical model.
Article
Physics, Multidisciplinary
Xinrong Zhou, Yao Fu, Helin Liao, Zhenhua Chen, Yanhong Ji, Zhilie Tang
Summary: Due to the double-pass configuration and noise in the system, the calibration of a collinear backscattering Mueller matrix imaging system is usually complex and of poor accuracy. In this work, we propose an alternative modified eigenvalue calibration method (ECM) based on the equivalent standard sample, which improves the accuracy by more than 40 times compared to other variants of the eigenvalue calibration method used in the double-pass system. The comparison results with error model-based calibration methods show that the modified eigenvalue calibration method generally provides the best accuracy, precision, and reliability.
FRONTIERS IN PHYSICS
(2023)
Article
Optics
Jean-Philippe Banon, Ingve Simonsen, Remi Carminati
Summary: Using a single scattering theory, this study derives the expression of the degree of polarization for light scattered from a layer with both surface and volume scattering. The expression reveals the close connection between the degree of polarization and the statistical correlation between surface and volume disorders, and allows for quantitative analysis of different levels of correlations. The study shows that measuring the degree of polarization can assess the surface-volume correlation function, and vice versa, the degree of polarization can be controlled through appropriate design of the correlation function.
Article
Physics, Fluids & Plasmas
Tyler Lutz, Sonja K. Richter, Andreas M. Menzel
Summary: Thin fluid or elastic films and membranes exhibit distinct flow and displacement behaviors, with the boundaries playing a crucial role in stabilizing the system. The decay rate of flow and displacement is affected by the distance from force center and boundary. Different boundary shapes under different boundary conditions affect the system's stability.
Article
Optics
Kan Ren, Jing Zhou, Minjie Wan, Guohua Gu, Qian Chen
Summary: A method is proposed to identify oil spill at sea by characterizing the scattering of the detected oil spill target based on its polarization characteristics using a Mueller matrix polarimeter. By filtering the Mueller matrix and studying scattering similarity parameters, a new concept of scattering similarity parameter difference is introduced to distinguish between water and oil film. The method effectively detects oil spill by analyzing the difference in SSPD curves between water and oil film.
Article
Environmental Sciences
Natalia Kustova, Alexander Konoshonkin, Victor Shishko, Dmitry Timofeev, Anatoli Borovoi, Zhenzhu Wang
Summary: This study numerically investigates the scattering matrix of particles with irregular shapes and sizes much larger than the incident wavelength. It reveals a surge in polarization elements within the backscattering peak and indicates that these surges are caused by interference between the conjugate scattered waves propagating in the opposite directions.
Article
Environmental Sciences
Sergei N. Volkov, Ilia D. Bryukhanov, Ignatii V. Samokhvalov, Duk-Hyeon Kim, Youngmin Noh
Summary: Remote control of the state of the atmosphere is an urgent problem, and it can be solved by using a matrix polarization lidar to monitor optical parameters of the atmosphere. This research aims to develop the theory and methods for implementing a multiwave polarization lidar, with new solutions for optical selection and data processing. The proposed polarization lidar is structurally simple and compact.
Article
Environmental Sciences
Sergei N. Volkov, Ignatii Samokhvalov, Duk-Hyeon Kim
Summary: Scattered light polarization plays a significant role as an indicator and characteristic in various atmospheric processes. By measuring the polarization of all scattering matrix elements, the optical and morphological parameters as well as the orientation of particles in clouds can be adequately described. This article focuses on the calibration of matrix polarization lidar (MPL) parameters, specifically through the calibration by air technique to correct optical element parameters.
