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We propose a strategy for optimizing a sensor trajectory in order to estimate the time dependence of a localized scalar source in turbulent channel flow. The approach leverages the view of the adjoint scalar field as the sensitivity of…

Computational Engineering, Finance, and Science · Computer Science 2022-02-21 Constantinos F. Panagiotou , Davide Cerizza , Tamer A. Zaki , Yosuke Hasegawa

Time integrated spectroscopic measurements are carried out to characterize transient plasma stream produced in a coaxial pulsed plasma accelerator. This method allows the estimation of different plasma parameters and its evolution with…

Plasma Physics · Physics 2020-08-04 A. Ahmed , S. Singha , S. Borthakur , N. K. Neog , T. K. Borthakur , J. Ghosh

We show that measured optical transmittance of an ultra thin gas depends on the detector size. To this end we conducted an experiment that compares transmittances measured in parallel with a pair of detectors with different diameters…

Instrumentation and Detectors · Physics 2021-03-19 Jakub M. Ratajczak

One of the most important aspects of detector development for the ILC is a good jet energy resolution sigma_E/E. To achieve the goal of high precision measurements sigma_E/E = 0.30/sqrt(E(GeV)} is proposed. The particle flow approach…

Instrumentation and Detectors · Physics 2009-02-16 O. Wendt

Dual-tip phase-detection probes can be used to measure flow properties in gas-liquid flows. Traditionally, time-averaged interfacial velocities have been obtained through cross-correlation analysis of long time-series of phase fraction…

Fluid Dynamics · Physics 2020-01-14 Matthias Kramer , Benjamin Hohermuth , Daniel Valero , Stefan Felder

Typical experimental measurement is set up as a study of the system's response to a stationary external excitation. This approach considers any random fluctuation of the signal as spurious contribution which is to be eliminated via…

By integrating a dielectric microwave resonator with a piezoelectric-based strain device, we develop an in situ strain-tunable microwave spectroscopy technique that enables contactless measurements of superconducting properties under…

Ultrafast light-matter interaction has emerged as a powerful tool to control and probe the macroscopic properties of functional materials, especially two-dimensional transition metal dichalcogenides which can form different structural…

Mesoscale and Nanoscale Physics · Physics 2023-10-10 XinYu Zhou , H Wang , Q M Liu , S J Zhang , S X Xu , Q Wu , R S Li , L Yue , T C Hu , J Y Yuan , S S Han , T Dong , D Wu , N L Wang

The ability to tune material properties using gate electric field is at the heart of modern electronic technology. It is also a driving force behind recent advances in two-dimensional systems, such as gate-electric-field induced…

Open-path dual-comb spectroscopy provides multi-species atmospheric gas concentration measurements with high precision. Here, we extend open-path dual comb spectroscopy to the mid-infrared 5 {\mu}m atmospheric window, enabling atmospheric…

Atmospheric and Oceanic Physics · Physics 2020-12-24 Fabrizio R. Giorgetta , Jeff Peischl , Daniel I. Herman , Gabriel Ycas , Ian Coddington , Nathan R. Newbury , Kevin C. Cossel

Galactic-scale outflows are a crucial component of galaxy evolution, yet their properties in the early universe remain poorly constrained. We present the first statistical investigation of \ion{Mg}{2}-traced cool gas outflows in galaxies…

Astrophysics of Galaxies · Physics 2026-02-25 Cheqiu Lyu , Haoran Yu , Enci Wang , Junxian Wang , Cheng Jia , Jie Song , Yangyao Chen , Jinyang Wang , Zeyu Chen , Chengyu Ma , Yifan Wang , Xu Kong

Biological ion channels balance electrostatic and dehydration effects to yield large ion selectivities alongside high transport rates. These macromolecular systems are often interrogated through point mutations of their pore domain,…

Mesoscale and Nanoscale Physics · Physics 2019-07-19 Subin Sahu , Justin Elenewski , Christoph Rohmann , Michael Zwolak

Gas concentration detection is important for applications such as gas leakage monitoring. Metal Oxide (MOx) sensors show high sensitivities for specific gases, which makes them particularly useful for such monitoring applications. However,…

Neural and Evolutionary Computing · Computer Science 2024-10-23 Shavika Rastogi , Nik Dennler , Michael Schmuker , André van Schaik

In this paper we show how a two dimensional fluid model can be used to interpret data obtained from an inclined Mach-probe or a Gundestrup probe. We use an analytical approximation of the solution of the differential equations describing…

Plasma Physics · Physics 2009-11-10 Peter Peleman , Stefan Jachmich , Michael Van Schoor , Guido Van Oost

Since the liquid flow rate of the annular flow is closely related to the heat exchange efficiency, it has great significance to measure the liquid flow rate of the annular flow in vertical tee junction. In order to acquire the liquid flow…

Instrumentation and Detectors · Physics 2020-03-16 Shuo Huang , Tianyu Fu , Guanmin Zhang , Yu Sun

Traveling wave theory is deployed today to improve the monitoring of transmission lines in electrical power grids. Most traveling wave methods require prior knowledge of the wave propagation of the transmission line, which is a major source…

Signal Processing · Electrical Eng. & Systems 2024-04-17 Marko Hudomalj , Andrej Trost , Andrej Čampa

We present an analysis of the eye tracking signal quality of the HoloLens 2s integrated eye tracker. Signal quality was measured from eye movement data captured during a random saccades task from a new eye movement dataset collected on 30…

Human-Computer Interaction · Computer Science 2022-05-25 Samantha D. Aziz , Oleg V. Komogortsev

The flow instability and further transition to turbulence in a toroidal pipe (torus) with curvature (tube-to-coiling diameter) 0.049 is investigated experimentally. The flow inside the toroidal pipe is driven by a steel sphere fitted to the…

Fluid Dynamics · Physics 2015-08-27 J. Kühnen , M. Holzner , B. Hof , H. Kuhlmann

A portion of the Muon g-2 Storage Ring electric system, which provides vertical beam focusing, exhibited an unexpected time dependence that produced a characteristic evolution of the stored beam during Run-1 of the Muon g-2 Experiment at…

It is an experimental design problem in which there are two Poisson sources with two possible and known rates, and one counter. Through a switch, the counter can observe the sources individually or the counts can be combined so that the…

Information Theory · Computer Science 2024-12-06 Muhammad Fahad , Daniel R. Fuhrmann