Article
Acoustics
Motonobu Tomoda, Akira Toda, Osamu Matsuda, Vitalyi E. Gusev, Oliver B. Wright
Summary: Time-domain Brillouin scattering (TDBS) is an optical experimental technique that uses laser picosecond ultrasonics to investigate transparent materials. It has various applications, including imaging thin-films, polycrystalline materials, biological cells, and studying physical properties such as residual stress, temperature gradients, and nonlinear coherent nano-acoustic pulses. In this study, a new method is presented for extracting sound velocity in TDBS without knowing the refractive index, by using probe light obliquely incident on the side face of the sample instead of the usual top face. The method is demonstrated using a fused silica sample with a titanium transducer film, and the sound velocity is mapped in the depth direction. Future applications include mapping the three-dimensional sound velocity distribution in inhomogeneous samples, particularly in biological cell imaging.
Article
Multidisciplinary Sciences
Chen-Hui Li, Philippe Djemia, Nikolay Chigarev, Siham Sodki, Yves Roussigne, Geeth Manthilake, Franck Tessier, Samuel Raetz, Vitalyi E. Gusev, Andreas Zerr
Summary: This study investigates the elastic properties of densified α-Ge3N4 under high temperature and pressure. The results show that the bulk modulus B0 is 322(44) GPa, which is different from previous experimental data and first-principles calculations.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Dong Hoon Kang, Soo Han Oh, Jae-Hyeon Ko, Kwang-Sei Lee, Seiji Kojima
Summary: The inelastic interaction between incident photons and acoustic phonons in taurine single crystal was investigated using Brillouin spectroscopy, determining temperature dependences of sound velocity, acoustic absorption coefficient, and elastic constants. The elastic behaviors could be explained based on normal lattice anharmonicity, and no evidence for structural phase transition was observed. The birefringence in the ac-plane indirectly estimated from split longitudinal acoustic modes was consistent with one theoretical calculation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Acoustics
Rafael Fuentes-Dominguez, Mengting Yao, William Hardiman, Salvatore La Cavera III, Kerry Setchfield, Fernando Perez-Cota, Richard J. Smith, Matt Clark
Summary: In this paper, the authors demonstrate a proof-of-concept method to parallelise phonon microscopy measurements for cell elasticity imaging. By using a multi-core fibre bundle for detection, they achieve a 3-fold increase in acquisition speed compared to current hardware limitations. This method, based on time-resolved Brillouin scattering and asynchronous optical sampling (ASOPS), allows access to cell elasticity with sub-optical axial resolution.
Article
Physics, Applied
Caizi Zhang, Fangfei Li, Xinmiao Wei, Linsheng Nie, Qiang Zhou, Xinyang Li, Liang Li
Summary: This study presents the first measurements of the single-crystal elastic constants of Zn2TiO4 spinel phase using Brillouin scattering at room temperature and high pressure. The results provide important data for understanding the elastic properties and sound velocities of spinel structure minerals.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Acoustics
Ayumu Ishijima, Shinga Okabe, Ichiro Sakuma, Keiichi Nakagawa
Summary: Frequency-domain and time-domain Brillouin scattering spectroscopy are powerful tools for studying mechanical properties of complex systems in material and life sciences. In this study, a technique combining both domains was presented to enable the detection of Brillouin scattering light from coherent acoustic phonons. This technique allows for single-frame readout of gigahertz-frequency oscillations with nanometer depth resolution. The proof of concept experiments demonstrated the imaging of heterogeneous thin films and biological cells with wide bandwidth.
Article
Acoustics
Motonobu Tomoda, Akihisa Kubota, Osamu Matsuda, Yoshihiro Sugawara, Oliver B. Wright
Summary: We introduce a picosecond optoacoustic technique that can map both the longitudinal sound velocity v and the refractive index n in solids by automated measurement at multiple probe incidence angles in time-domain Brillouin scattering. By using a fused silica sample with a deposited titanium film as an optoacoustic transducer, we successfully map v and n in the depth direction. This technique has potential applications in imaging sound velocity and refractive index distributions in three dimensions in inhomogeneous samples such as biological cells.
Article
Physics, Nuclear
Toru Harada, Yoshiharu Hirabayashi
Summary: The study successfully calculated the reaction amplitude between K and nucleons by extending the Fermi averaging procedure, providing the possibility to describe the reaction cross sections in near-recoilless reactions such as (K???, n???).
Review
Physics, Multidisciplinary
Chenjun Shi, Hongyuan Zhang, Jitao Zhang
Summary: Brillouin microscopy based on spontaneous Brillouin scattering is a unique elastography technique for mechanical imaging of biological cell and tissue. Stimulated Brillouin-based methods have the potential to improve the speed and spectral resolution of existing Brillouin microscopy. This review discusses the ongoing technological advancements of three stimulated Brillouin-based methods and their applications in biophysics and mechanobiology.
FRONTIERS IN PHYSICS
(2023)
Article
Physics, Nuclear
L. C. Chamon, L. R. Gasques, J. C. Zamora
Summary: The real part of the optical potential obtained from elastic scattering data analyses within the optical model approach exhibits significant energy-dependence. Previous studies have suggested that this dependence may arise from couplings to inelastic states of the nuclei. This paper presents extensive data analyses for the elastic scattering and inelastic excitation of 111 states of Pb-208 in the He-4 + Pb-208 system, in order to further investigate this phenomenon.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2022)
Article
Chemistry, Physical
Jeong Woo Lee, Furqanul Hassan Naqvi, Jae-Hyeon Ko, Tae Heon Kim, Chang Won Ahn
Summary: In this study, inelastic light scattering spectra of organic-inorganic halide perovskite MAPbCl(3) single crystals were investigated using Brillouin spectroscopy. The results revealed the sound velocities, acoustic absorption coefficients, and temperature dependences of elastic constants of MAPbCl(3) in the cubic phase, providing important insights into its structural and mechanical properties.
Article
Physics, Multidisciplinary
T. R. Whitehead, Y. Lim, J. W. Holt
Summary: Researchers have developed a microscopic global nucleon-nucleus optical potential, utilizing an improved local density approximation and modeling with five nuclear forces. The study provides an analysis tool for next-generation rare-isotope beam experiments, with successful computation of optical potentials for 1800 target nuclei without using any adjustable parameters. The uncertainty bands for elastic scattering were generated to handle potential experimental errors.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Xin-Xin Hu, Zhu-Bo Wang, Pengfei Zhang, Guang-Jie Chen, Yan-Lei Zhang, Gang Li, Xu-Bo Zou, Tiancai Zhang, Hong X. Tang, Chun-Hua Dong, Guang-Can Guo, Chang-Ling Zou
Summary: The study demonstrates a method of magnetic-free non-reciprocity by optically-induced magnetization in an atom ensemble. Excellent isolation performance (with highest isolation ratio of 51.5 dB) is observed over a power dynamic range of 7 orders of magnitude, with noiseless property verified by quantum statistics measurements. This approach can be applied to other atoms and atom-like emitters, paving the way for future studies of integrated photonic non-reciprocal devices.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Milaan Patel, B. R. Geethika, Jinto Thomas, Hem Joshi
Summary: In this work, the evolution of atomic clusters in an under-expanded supersonic jet of Argon is reported. A high-resolution and sensitive Rayleigh scattering-based experimental set-up is designed to overcome limitations of conventional set-ups. The results show that the spatial distribution of clusters inside the supersonic core deviates considerably from the free expansion model prediction, and the growth of clusters gets saturated after a certain distance from the nozzle. Observations of substantial cluster strengthening upstream of the barrel shock and disintegration of clusters at the normal shock are noticed for the first time, which further enhances the understanding of cluster dynamics in a supersonic jet.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Lirong Qiu, Yunhao Su, Ke-Mi Xu, Han Cui, Dezhi Zheng, Yuanmin Zhu, Lin Li, Fang Li, Weiqian Zhao
Summary: A divided-aperture laser differential confocal 3D Geometry-Raman-Brillouin microscopic detection technology is proposed to simultaneously collect reflection, Raman, and Brillouin scattering signals in real time, allowing for the study of cell morphology and cancer development.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Geology
M. Alvaro, M. L. Mazzucchelli, R. J. Angel, M. Murri, N. Campomenosi, M. Scambelluri, F. Nestola, A. Korsakov, A. A. Tomilenko, F. Marone, M. Morana
Editorial Material
Mineralogy
Ross J. Angel, Matteo Alvaro, Peter Schmid-Beurmann, Herbert Kroll
MINERALOGICAL MAGAZINE
(2020)
Article
Materials Science, Multidisciplinary
Marta Morana, Boriana Mihailova, Ross J. Angel, Matteo Alvaro
PHYSICS AND CHEMISTRY OF MINERALS
(2020)
Article
Geochemistry & Geophysics
Nicola Campomenosi, Marco Scambelluri, Ross J. Angel, Joerg Hermann, Mattia L. Mazzucchelli, Boriana Mihailova, Francesca Piccoli, Matteo Alvaro
Summary: Studying the ultrahigh-pressure whiteschists of the Brossasco-Isasca unit in the Western Alps reveals the diversity of garnet growth environments at different temperatures and pressures, indicating discrepancies between classical thermodynamic modelling and elastic thermobarometry.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Geochemistry & Geophysics
Mattia Gilio, Ross J. Angel, Matteo Alvaro
Summary: This paper discusses misconceptions of some general concepts underlying elastic geobarometry, focusing on the difference between various approaches to retrieve residual pressures and strains from Raman measurements of inclusions. General guidelines on how to deal with inclusion strain, measurements, inclusion pressure, and their uncertainties are provided.
AMERICAN MINERALOGIST
(2021)
Article
Geology
Mattia Gilio, Marco Scambelluri, Ross J. Angel, Matteo Alvaro
Summary: Accurate characterization of the pressure and temperature (P-T) histories of eclogite facies rocks is crucial for understanding subduction zone processes, with methods like elastic geobarometry providing constraints and aiding in interpreting geophysical images of present-day converging plates. These methods are particularly useful in ultra high pressure (UHP) metamorphic terranes where conventional equilibrium geothermobarometers face challenges.
JOURNAL OF METAMORPHIC GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Joseph P. Gonzalez, Mattia L. Mazzucchelli, Ross J. Angel, Matteo Alvaro
Summary: A new elastic model taking into account anisotropic elastic properties and relative crystallographic orientation (RCO) of a host-inclusion system has been developed for elastic thermobarometry. Results suggest that this anisotropic model is more suitable for determining inclusion pressures and has better applicability in elastic thermobarometry compared to isotropic models.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Kira A. Musiyachenko, Mara Murri, Mauro Prencipe, Ross J. Angel, Matteo Alvaro
Summary: Rutile is commonly found as inclusions in garnet and other rock-forming minerals, with some exhibiting zero residual pressure as predicted by thermodynamic studies. However, rutile inclusions surrounded by optical birefringence haloes in garnet may indicate residual inclusion pressures.
AMERICAN MINERALOGIST
(2021)
Article
Chemistry, Multidisciplinary
Ross Angel, Mattia Mazzucchelli, Javier Gonzalez-Platas, Matteo Alvaro
Summary: A method for self-consistent description of unit-cell parameters in crystals with pressure and temperature variations is presented, employing linearized EoSs and constraints. Comparison is made between using polynomial functions and linearized EoSs to describe unit-cell angles in monoclinic and triclinic crystals. The implemented methods allow calculation of unit-cell parameters and compressibility/thermal expansion tensors in a consistent manner within EosFit7c program.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2021)
Editorial Material
Chemistry, Multidisciplinary
Matteo Alvaro, Ross John Angel, Fabrizio Nestola
Summary: In this study, the authors explore the inclusions trapped in super deep diamonds as an alternative source of information on the chemical state of the Earth's interior over time.
COMMUNICATIONS CHEMISTRY
(2022)
Review
Geochemistry & Geophysics
Ross J. Angel, Mattia Gilio, Mattia Mazzucchelli, Matteo Alvaro
Summary: This study re-evaluated the volume and elasticity data of garnet end-members and determined the parameters of EOS to describe their compressibility and PVT behavior. The new EOS model showed significant improvement in predicting the properties of different garnets compared to previous models.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Geochemistry & Geophysics
Yuuki Hagiwara, Ross J. Angel, Junji Yamamoto, Matteo Alvaro
Summary: This study determines the equation of state (EoS) of MgAl2O4 and explores its potential application in elastic geobarometry. The EoS parameters are obtained by analyzing volume, elasticity, and isobaric heat capacity data, and a thermal pressure EoS is found to best explain the dataset. The results suggest that spinel inclusions in olivine and orthopyroxene should have positive residual pressures, making them useful for estimating the depth provenance of spinel-bearing peridotites.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Mineralogy
Ross J. J. Angel, Mattia L. L. Mazzucchelli, Kira A. A. Musiyachenko, Fabrizio Nestola, Matteo Alvaro
Summary: Elastic thermobarometry (or piezobarometry) is the process of determining the pressure and temperature of entrapment of inclusions by measuring their pressure, stress or strain when their host mineral is at room conditions. Current methods and software for piezobarometry are limited to single-phase inclusions. This study introduces the theory of elasticity of mixtures of different phases and combines it with the existing analysis of elastic interactions between single-phase inclusions and their hosts to calculate the inclusion pressures of mixed-phase inclusions. The calculated entrapment conditions for mixed-phase inclusions depend on the contrasts between the elastic properties of the host and the phases in the inclusion. The methods to calculate the entrapment conditions of mixed-phase inclusions have been incorporated into the EosFit7c program (version 7.6) available as freeware.
EUROPEAN JOURNAL OF MINERALOGY
(2023)
Article
Geochemistry & Geophysics
Mattia Luca Mazzucchelli, Ross John Angel, Matteo Alvaro
Summary: EntraPT is a web-based application for elastic geobarometry that provides an easy-to-use tool for calculating entrapment conditions of inclusions and visualizing the results. It helps users avoid errors from manual data handling and numerous calculation steps, and allows for data export and storage for further analysis and sharing. This online tool is constantly updated with new functionalities from advances in elastic geobarometry development.
AMERICAN MINERALOGIST
(2021)
Article
Geochemistry & Geophysics
Ross J. Angel, Mattia L. Mazzucchelli, Matted Alvaro, Fabrizio Nestola
AMERICAN MINERALOGIST
(2020)
