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The dynamics of spherical laser-induced cavitation bubbles in water is investigated by plasma photography, time-resolved shadowgraphs, and single-shot probe beam scattering enabling to portray the transition from initial nonlinear to late…

Fluid Dynamics · Physics 2022-04-27 Xiao-Xuan Liang , Norbert Linz , Sebastian Freidank , Guenther Paltauf , Alfred Vogel

Research suggests that acoustic technology may be able to detect ultra-high-energy neutrinos if a large amount of non-linear fluid is analyzed. When a neutrino interacts in water, it creates a quasi-instantaneous cascade of particles,…

Instrumentation and Detectors · Physics 2026-04-08 D. Bonanno , L. S. Di Mauro , D. Diego-Tortosa , A. Idrissi , G. Riccobene , S. Sanfilippo , S. Viola

Estimation of nearshore bathymetry is important for accurate prediction of nearshore wave conditions. However, direct data collection is expensive and time-consuming while accurate airborne lidar-based survey is limited by breaking waves…

Atmospheric and Oceanic Physics · Physics 2023-11-03 Jonghyun Lee , Katherine DeVore , Tyler Hesser , A. Spicer Bak , Katherine Brodie , Brittany Bruder , Matthew Farthing

This article describes two independent developments aimed at improving the Particle Tracking Method for measurements of flow or particle velocities. First, a stereoscopic multicamera calibration method that does not require any optical…

Mechanisms for non-invasive target drug delivery using microbubbles and ultrasound have attracted growing interest. Microbubbles can be loaded with a therapeutic payload and tracked via ultrasound imaging to selectively release their…

Medical Physics · Physics 2019-02-07 S. Harput , L. Nie , D. M. J. Cowell , T. Carpenter , B. Raiton , J. McLaughlan , S. Freear

We report on a flow sensing approach based on deflection monitoring of micro beams buckled by the compressive thermal stress due to electrothermal Joules heating. The air stream convectively cooling the device affects both the critical…

Fluid Dynamics · Physics 2016-09-21 Yoav Kessler , Slava Krylov , Alex Liberzon

We compare the computational performance of two modeling approaches for the flow of dilute cavitation bubbles in a liquid. The first approach is a deterministic model, for which bubbles are represented in a Lagrangian framework as advected…

Fluid Dynamics · Physics 2023-02-23 Spencer H. Bryngelson , Kevin Schmidmayer , Tim Colonius

Diffusing wave spectroscopy (DWS) can be employed as an optical rheology tool with numerous applications for studying the structure, dynamics and linear viscoelastic properties of complex fluids, foams, glasses and gels. To carry out DWS…

Soft Condensed Matter · Physics 2018-11-06 Chi Zhang , Mathias Reufer , Danila Gaudino , Frank Scheffold

$Context.$ The traditional approach to characterize the structure of molecular clouds is to map their line emission. $Aims.$ We aim to test and apply a stratified random sampling technique that can characterize the line emission from…

Astrophysics of Galaxies · Physics 2021-02-17 M. Tafalla , A. Usero , A. Hacar

Based on machine learning techniques, we propose a novel method to estimate flow fields using only floating sensor locations. This method does not require either ground-truth velocity fields or governing equations for fluid flows, which is…

Fluid Dynamics · Physics 2026-04-07 Tomoya Oura , Reno Miura , Koji Fukagata

As demand for advanced photographic applications on hand-held devices grows, these electronics require the capture of high quality depth. However, under low-light conditions, most devices still suffer from low imaging quality and inaccurate…

Computer Vision and Pattern Recognition · Computer Science 2018-03-22 Sunghoon Im , Hae-Gon Jeon , In So Kweon

Tuning of measurement models is challenging in real-world applications of sequential Monte Carlo methods. Recent advances in differentiable particle filters have led to various efforts to learn measurement models through neural networks.…

Artificial Intelligence · Computer Science 2022-03-17 Xiongjie Chen , Yunpeng Li

Self-oscillations underlie many natural phenomena such as heartbeat, ocean waves, and the pulsation of variable stars. From pendulum clocks to the behavior of animal groups, self-oscillation is one of the keys to the understanding of…

Precision measurements of the beam pattern response are needed to predict the response of a radio telescope. Mapping the beam of a low frequency radio array presents a unique challenge and science cases such as the observation of the 21\,cm…

Instrumentation and Methods for Astrophysics · Physics 2024-07-08 Yifan Zhao , Daniel C. Jacobs , Titu Samson , Mrudula Gopal Krishna , Michael Horn , Marc-Olivier R. Lalonde , Raven Braithwaite , Logan Skabelund

Measuring the properties of the intergalactic medium (IGM) and sources during the Epoch of Reionization (EoR) is of immense importance. We explore the prospects of probing the IGM and sources through redshifted 21-cm observations of…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-24 Arnab Mishra , Chandra Shekhar Murmu , Kanan K. Datta , Samir Choudhuri , Suman Majumdar , Iffat Nasreen , Sk. Saiyad Ali

Although methods for estimating the pose of objects in indoor scenes have achieved great success, the pose estimation of underwater objects remains challenging due to difficulties brought by the complex underwater environment, such as…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Jingyi Tang , Gu Wang , Zeyu Chen , Shengquan Li , Xiu Li , Xiangyang Ji

Density is one of the most important properties of seawater and is used in various marine research and technology. Traditionally, in the practice of oceanographic research, it is customary to con-sider density as a dependent parameter,…

Atmospheric and Oceanic Physics · Physics 2019-10-02 Aleksandr N Grekov , Nikolay A Grekov , Evgeniy Sychov

Acoustic microstreaming has several industrial, therapeutic, and biomedical applications - Acoustic cleaning, micromixing, microfluid transport, hemolysis, sonoporation. The acoustic microstreaming due to the oscillation of ultrasound…

Fluid Dynamics · Physics 2022-01-19 Nima Mobadersany

Self-supervised monocular depth estimation methods have been increasingly given much attention due to the benefit of not requiring large, labelled datasets. Such self-supervised methods require high-quality salient features and consequently…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Xiaotong Guo , Huijie Zhao , Shuwei Shao , Xudong Li , Baochang Zhang

In this paper, an autonomous method of satellite detection and tracking in images is implemented using optical flow. Optical flow is used to estimate the image velocities of detected objects in a series of space images. Given that most…

Instrumentation and Methods for Astrophysics · Physics 2022-04-15 David Zuehlke , Daniel Posada , Madhur Tiwari , Troy Henderson