Article
Materials Science, Multidisciplinary
A. A. Zabolotnykh
Summary: We analytically study plasma solitary waves in a two-dimensional electron system using a nonperturbative model, providing an exact description of the soliton shape. The conditions for the existence of solitons and the relationship between their amplitude, width, and velocity are derived.
Article
Geochemistry & Geophysics
Yaochang Jiang, Yongxin Gao, Qianli Cheng, Yongjia Song
Summary: We propose a semi-analytical method to simulate the propagation of seismic waves in horizontally stratified double-porosity media. The results show the existence of three P waves, one fast and two slow, in the double-porosity media. The double-porosity model predicts higher attenuation of the fast P wave compared to a single-porosity medium due to local fluid flow between the background medium and the inclusions.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Engineering, Chemical
Hrachya Kocharyan, Nikhil Karanjgaokar
Summary: The study found that the drag effects on 2D granular crystals immersed in various fluids result in higher wave attenuation, with the coefficient of attenuation increasing with viscosity but unexpectedly decreasing in the highest viscosity fluids. Additionally, the ratio of kinetic energy to strain energy for immersed granular crystals initially decreases with viscosity but increases again for the fluids with the highest viscosities.
Article
Acoustics
Shan Li, Ming Huang, Yongfeng Song, Bo Lan, Xiongbing Li
Summary: This study presents theoretical and numerical models for the backscattering of two-dimensional Rayleigh waves by elastic inclusions. The models consider the host material as isotropic and the inclusion as having an arbitrary shape and crystallographic symmetry. The theoretical model is developed based on the reciprocity theorem and the numerical finite element (FE) model provides accurate simulations of scattering problems. The results show quantitative agreement between the theoretical model and FE results, laying the foundation for using Rayleigh waves to characterize surface/subsurface inclusions.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Geochemistry & Geophysics
Ehsan Moradian Bajestani, Anooshiravan Ansari, Ehsan Karkooti
Summary: A model for frequency-dependent local and regional P-wave attenuation in continental paths in the Iranian Plateau is estimated, showing three distinct sections of attenuation and faster attenuation of P-wave amplitude compared to global models at local distances.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Ziqi Jin, Zhishui Liu, Ying Shi, Weihong Wang
Summary: Although seismic wave attenuation is frequency-dependent, most existing Q estimation methods assume that Q is constant. This limits the effective application of rock-physics Q models to link frequency-dependent Q estimations and rock properties. By employing suitable rock-physics modeling and scaling, a new frequency-dependent Q estimation method, called the two-parameters spectral ratio method, is developed. This method provides more accurate and reliable Q results by establishing a connection between rock-physic models, logging, and seismic data for better interpretation of subsurface properties.
Article
Geochemistry & Geophysics
Yingming Qu, Jianggui Zhu, Zhenzhong Chen, Chongpeng Huang, Yixin Wang, Chang Liu
Summary: This paper proposes a new method for seismic wave migration that can simultaneously correct for anisotropy and Q attenuation in migrated images. The method constructs velocity-anisotropic Q-compensated forward modeling, Q-compensated adjoint, and Q-attenuated demigration operators to address these challenges. Experimental results demonstrate that this method outperforms traditional approaches in terms of imaging resolution, signal-to-noise ratio, and amplitude preservation.
Article
Physics, Applied
Anchen Ni, Zhifei Shi
Summary: In this work, a novel inertial amplified topological metamaterial beam is proposed to overcome the large mass limitation for low-frequency topologically protected interface modes. The dynamic characteristics of the system are investigated through detailed analytical and numerical studies. The existence of the topologically protected interface modes is verified through transmission simulation. The lower-frequency Dirac cone and wider local resonance bandgaps are obtained without sacrificing total stiffness or increasing total mass.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Geochemistry & Geophysics
Ali Sayed, Robert R. Stewart, Dhananjay Kumar
Summary: Azimuthal vertical seismic profile (AzVSP) surveys are commonly used for fracture characterization, with fractured media producing characteristic patterns disrupted by complex structures. Anisotropy parameters have been derived to characterize AzVSP responses, showing that dry fractures produce stronger responses than fluid-filled fractures. The methodology can eliminate structural effects on AzVSP gathers, revealing underlying fracture responses even in complex overburdens.
Article
Geochemistry & Geophysics
Qi Hao, Stewart Greenhalgh
Summary: The paper presents the development of first and second-order nearly constant Q dissipative models using a novel Q-independent weighting function approach. The new models exhibit quality factor and phase velocity similar to existing models in the frequency range of interest, which benefits time-domain large-scale wavefield forward and inverse modeling.
Article
Geochemistry & Geophysics
Enjiang Wang, Jose M. Carcione, Jing Ba
Summary: This study investigates the surface-wave propagations at the interface between a fluid layer and a double-porosity medium with cracks. The Biot-Rayleigh model is generalized to include penny-shaped cracks, and the role of mesoscopic local fluid flow (LFF) is considered. Dispersion equations for surface waves are derived, and numerical iterations are used to obtain phase velocity and attenuation. Different cases are analyzed for zero and infinite thickness of the fluid layer. The study confirms the effects of LFF at low frequencies and the impact of boundary conditions at high frequencies. The crack density affects the level of attenuation, while the aspect ratio affects the location of the relaxation peak.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Geochemistry & Geophysics
R. Zaccherini, A. Palermo, A. Marzani, A. Colombi, V. K. Dertimanis, E. N. Chatzi
Summary: Granular materials can be used to simulate and study the propagation of seismic waves in different unconsolidated porous media. This study experimentally tests an unconsolidated granular medium made of silica microbeads with a gravity-induced power-law stiffness profile, aiming to investigate the attenuation mechanisms of vertically polarized seismic waves traveling at the surface of unconsolidated substrates. The findings show that laboratory-scale physical models can be used to study the geometric spreading and material damping of seismic waves induced by soil inhomogeneity.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Physics, Applied
Yonghang Sun, Chenyang Xi, Jingjie Dong, Hui Zheng, Heow Pueh Lee
Summary: This paper presents the investigation of a metastructure, built with periodic arrays of inertial amplification (IA) cantilever-type resonators on a host beam, to improve its low-frequency flexural wave attenuation performance. The effects of amplification ratio, IA span, and length ratio of cantilever-type resonators on the band diagram of the IACRB are investigated. The proposed mechanism affects the modal distributions of the host structure.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Acoustics
Fatima Zahraa Kachkouch, Herve Franklin
Summary: This article investigates the Rayleigh mode (also known as generalized Rayleigh wave) at the flat interface between a liquid and a double porosity medium saturated by the same liquid. The double porosity medium follows the phenomenological model of Berryman and Wang (2000) and allows the concurrent propagation of three longitudinal waves and one transverse wave. Assuming open pore conditions at the interface, formulas are derived for the reflection coefficients in the liquid and transmission coefficients in the double porosity medium. By considering only the angular variable in the study, numerical simulations based on Berea sandstone data demonstrate the influence of frequency and the two types of porosity on the reflection coefficient and velocity of the generalized Rayleigh wave.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Physics, Applied
Yeongtae Jang, Geon Lee, Eunho Kim, Junsuk Rho
Summary: In this study, the authors investigate stress wave mitigation in composite-based woodpile phononic crystals. The study proposes a novel method of shock attenuation by adjusting the composition ratio of the materials, which results in extreme dispersive waves for efficient impact protection.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Koen van Kruining, Joerg B. Goette
Article
Physics, Multidisciplinary
Armen G. Hayrapetyan, S. P. Klevansky, Joerg B. Goette
NEW JOURNAL OF PHYSICS
(2017)
Article
Multidisciplinary Sciences
Robert P. Cameron, Jorg B. Gotte, Stephen M. Barnett, Alison M. Yao
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2017)
Article
Physics, Multidisciplinary
Koen van Kruining, Armen G. Hayrapetyan, Jorg B. Gotte
PHYSICAL REVIEW LETTERS
(2017)
Article
Optics
K. C. van Kruining, R. P. Cameron, J. B. Gotte
Editorial Material
Physics, Multidisciplinary
J. Leach, A. J. Wright, J. B. Gotte, J. M. Girkin, L. Allen, S. Franke-Arnold, S. M. Barnett, M. J. Padgett
PHYSICAL REVIEW LETTERS
(2019)
Article
Optics
Michael Berry, Nikolay Zheludev, Yakir Aharonov, Fabrizio Colombo, Irene Sabadini, Daniele C. Struppa, Jeff Tollaksen, Edward T. F. Rogers, Fei Qin, Minghui Hong, Xiangang Luo, Roei Remez, Ady Arie, Jorg B. Gotte, Mark R. Dennis, Alex M. H. Wong, George Eleftheriades, Yaniv Eliezer, Alon Bahabad, Gang Chen, Zhongquan Wen, Gaofeng Liang, Chenglong Hao, C-W Qiu, Achim Kempf, Eytan Katzav, Moshe Schwartz
Review
Chemistry, Multidisciplinary
Frances Crimin, Neel Mackinnon, Joerg B. Goette, Stephen M. Barnett
APPLIED SCIENCES-BASEL
(2019)
Article
Optics
Frances Crimin, Neel Mackinnon, Jorg B. Gotte, Stephen M. Barnett
Article
Multidisciplinary Sciences
Christopher Kelly, Donald A. MacLaren, Katie McKay, Anthony McFarlane, Affar S. Karimullah, Nikolaj Gadegaard, Laurence D. Barron, Sonja Franke-Arnold, Frances Crimin, Joerg B. Goette, Stephen M. Barnett, Malcolm Kadodwala
NATURE COMMUNICATIONS
(2020)
Correction
Optics
Sijia Gao, Fiona C. Speirits, Francesco Castellucci, Sonja Franke-Arnold, Stephen M. Barnett, Jorg B. Gotte
Article
Optics
Sijia Gao, Fiona C. Speirits, Francesco Castellucci, Sonja Franke-Arnold, Stephen M. Barnett, Jorg B. Gotte
Article
Astronomy & Astrophysics
Koen van Kruining, Felix Mackenroth, Jorg B. Gotte
Proceedings Paper
Optics
Joerg B. Goette, Robert P. Cameron, Stephen M. Barnett
COMPLEX LIGHT AND OPTICAL FORCES XI
(2017)
Article
Optics
Jianbao Zhao, Brant E. Billinghurst, Paul L. Raston
Summary: The far-infrared spectrum of room temperature formic acid labeled with 13C has been recorded and analyzed, leading to the determination of accurate line positions and predictions relevant to Earth's atmosphere and interstellar sources.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Semen Vasilchenko, Alexander Solodov, Oleg Egorov, Vladimir Tyuterev
Summary: Ozone plays a crucial role in atmospheric chemistry and radiative processes, and it may serve as a potential biosignature species in exoplanetary observations. This study utilized a continuous-wave cavity-ring-down spectrometer to accurately measure the absorption cross-sections of ozone in the near-infrared range. The results provide more precise data and have potential applications in atmospheric research.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Baorui Huang, Bo Peng, Qifeng Ren, Sheng Liao
Summary: This study utilizes the polarization bidirectional reflectance distribution function (p-BRDF) model derived from the microfacet theory to analyze the spectral p-BRDF of a brass surface. The results show that factors such as polarization state, wavelength, surface roughness, and permittivity have a significant impact on the distribution of BRDF on the object surface.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Qingwei Duan, Jiajie Wang, Qiwei Li, Xiang'e Han, Kuan Fang Ren
Summary: This paper introduces the applications of the generalized Lorenz-Mie theory (GLMT) and the vectorial complex ray model (VCRM) in the interaction between beams and particles. By comparing the experimental results, it is found that VCRM performs well in Gaussian beam scattering problems, providing a new method for studying the scattering of shaped beams by large particles/objects of any shape.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Yuefan Du, Xiaoping Li, Lei Shi, Fangyan Li, Shurong Yuan
Summary: This study proposes a physics-constrained model that utilizes the distribution characteristics of gas spectral parameters to predict spectral parameters for unknown wavelengths. Experimental results show that the model improves prediction accuracy and increases the data volume of gas spectral parameters by 4-5 times.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Laurentius Windholz, Imran Siddiqui, Shamim Khan, Syed Tanweer Iqbal
Summary: In this study, we report the discovery of two energy levels of the Pr atom that exhibit strong J-mixing, as well as the observed hyperfine structure patterns. The composition of wave functions, in addition to J-values, plays a crucial role in determining the appearance of these patterns.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Matthias Germann, Adrian Hjalten, Jonathan Tennyson, Sergei N. Yurchenko, Iouli E. Gordon, Christian Pett, Isak Silander, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Grzegorz Sobon, Aleksandra Foltynowicz
Summary: In this study, optical frequency comb Fourier transform spectroscopy was used to record the spectroscopic data of formaldehyde in a specific frequency range. The line positions and intensities of rovibrational transitions were obtained through line-by-line fitting. By incorporating these accurate line positions into the analysis, more energy levels and rovibrational transitions were predicted with reduced uncertainties in the H2CO spectrum.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Leonardo A. Ambrosio, Jhonas O. de Sarro, Gerard Gouesbet
Summary: This study derives a polychromatic version of the generalized Lorenz-Mie theory stricto sensu (GLMT) by expanding arbitrary time-dependent fields into partial waves using Bromwich scalar potentials. The new formalism introduces field shape spectra (FSSs) which are intrinsically frequency-dependent, modifying and redefining the physical quantities expressed in the monochromatic GLMT.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Patrick C. Chaumet
Summary: The paper proposes two new methods (IDR(s) and GPBiCGstab(L)) for computing the electromagnetic diffraction of objects larger than the wavelength. It is found that IDR(s) can reduce computation time but may not converge in some cases, while GPBiCGstab(L) always converges and also reduces computation time compared to QMR, GPBiCG, and BiCGstab.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Antigoni Kleanthous, Anthony J. Baran, Timo Betcke, David P. Hewett, Christopher D. Westbrook
Summary: To improve weather and climate models, it is important to accurately calculate the single-scattering properties of randomly oriented complex atmospheric ice crystals. This study applies Boundary Element Method (BEM) to calculate these properties in the microwave and sub-millimeter region of the electromagnetic spectrum for all-sky data assimilation. The results show that BEM can accurately compute the scattering properties of complex ice aggregates, which is crucial for weather and climate models.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Ben Niu, Yanting Li, Gang Xiong, Jihui Chen, Zhimin Hu, Yunqing Fu, Yaming Zou, Chongyang Chen, Ke Yao
Summary: This study presents both experimental and theoretical analysis of the 4d 2D5/2 -> 2D3/2 magnetic dipole transition in Rb-like ions. The correlation between the theoretical and experimental findings is observed, and it is illustrated that the contribution of the core-valence correlation is pivotal for the fine structure splittings.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
James A. Lock, Gunther P. Konnen, Philip Laven
Summary: Researchers have derived an analytical generalization of Airy theory that provides a more accurate approximation for the primary rainbow, but still has limitations for the second-order rainbow and beyond.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Shixiong Wu, Xuebang Gao, Xuqiang Dou, Li Xie
Summary: In this paper, an indoor experimental study was conducted to investigate the optical attenuation caused by sand/dust storms at different relative humidity levels. It was found that the hygroscopic growth of sand/dust particles has a significant effect on optical attenuation when the relative humidity is above 60%. Based on the double-parameter Kasten model, a proposed optical attenuation model takes into account visibility, particle size, relative humidity, and optical wavelength. Numerical calculations considering the hygroscopicity effect were also performed, and the results were in agreement with the experimental data.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Zhimin Yang, Jaeman Song, Bong Jae Lee
Summary: In this study, we analyze TPX cells operating in the self-sustaining circuit and examine the effects of different bandgaps on their performance. The results show that the bandgap energy of the LED must exceed that of the PV cell for the TPX cell to function in a self-sustaining parallel circuit. Additionally, a narrower bandgap energy for the PV cell and a wider bandgap energy for the LED can improve the performance of the TPX cell in the self-sustaining circuit.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
