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Fundamental questions in ion mobility spectrometry have practical implications for analytical applications in general, and omics in particular, in three respects. (1) Understanding how ion mobility and collision cross section values depend…

Chemical Physics · Physics 2018-03-05 Valerie Gabelica , Erik Marklund

The manipulation of trapped charged particles by electric fields is an accurate, robust and reliable technique for many applications or experiments in high-precision spectroscopy. The transfer of the ion sample between multiple traps allows…

In the isochronous mass spectrometry (IMS) performed at storage rings, masses of short-lived nuclides are determined through precision measurements of their mean revolution times. However, the distribution of revolution times could be…

Flow Matching (FM) is a simulation-free method for learning a continuous and invertible flow to interpolate between two distributions, and in particular to generate data from noise. Inspired by the variational nature of the diffusion…

Machine Learning · Statistics 2025-07-14 Chen Xu , Xiuyuan Cheng , Yao Xie

Ising Machines (IMs) are physical systems designed to find solutions to combinatorial optimization (CO) problems mapped onto the IM via the coupling strengths of its binary spins. Using the intrinsic dynamics and different annealing…

Mesoscale and Nanoscale Physics · Physics 2020-06-04 Afshin Houshang , Mohammad Zahedinejad , Shreyas Muralidhar , Jakub Checinski , Ahmad A. Awad , Johan Åkerman

Modulating ion transport through nanoporous membranes is critical to many important chemical and biological separation processes. The corresponding transport timescales, however, are often too long to capture accurately using conventional…

Statistical Mechanics · Physics 2022-12-23 Brian A Shoemaker , Tiago S Domingues , Amir Haji-Akbari

One of the possible ways to maintain the micrometer spatial resolution while performing ion beam analysis in the air is to increase the energy of ions. In order to explore capabilities and limitations of this approach, we have tested a…

Instrumentation and Detectors · Physics 2019-03-13 Milko Jakšić , Davit Chokheli , Stjepko Fazinić , Veljko Grilj , Natko Skukan , Ivan Sudić , Tonči Tadić , Tome Antičić

Intrusion detection in IoT and industrial networks requires models that can detect rare attacks at low false-positive rates while remaining reliable under evolving traffic and limited labels. Existing IDS solutions often report strong…

Cryptography and Security · Computer Science 2026-03-03 Srikumar Nayak

In diffusion-based molecular communication, information transport is governed by diffusion through a fluid medium. The achievable data rates for these channels are very low compared to the radio-based communication system, since diffusion…

Emerging Technologies · Computer Science 2016-03-15 Bon-Hong Koo , Changmin Lee , H. Birkan Yilmaz , Nariman Farsad , Andrew Eckford , Chan-Byoung Chae

In gaseous tracking detectors with a large gaseous volume multiple layers of Gas Electron Multipliers (GEM) can be used to block positive ions from flowing back into the active volume, which is detrimental to the tracking performance. We…

Instrumentation and Detectors · Physics 2022-10-19 Sourav Tarafdar , Senta V. Greene , Julia Velkovska , Brandon Blankenship , Michael Z. Reynolds

Molecular line emissions are commonly used to trace the distribution and properties of molecular Interstellar Medium (ISM). However, the emissions are heavily blended on the Galactic disk toward the inner Galaxy because of the relatively…

Astrophysics of Galaxies · Physics 2024-10-07 Haoran Feng , Zhiwei Chen , Zhibo Jiang , James S. Urquhart

Isotope shifts (ISs) in atomic energy levels are sensitive probes of nuclear structure and new physics beyond the Standard Model. We present an analysis of the ISs of the cadmium atom (Cd I) and singly charged cadmium ion (Cd II). ISs of…

Narrow-band intensity-difference squeezing beams have important applications in quantum metrology and gravitational wave detection. The best way to generate narrow-band intensity-difference squeezing is to employ parametrically-amplified…

Optics · Physics 2017-10-25 Da Zhang , Changbiao Li , Zhaoyang Zhang , Feng Li , Yiqi Zhang , Yanpeng Zhang , Min Xiao

The reconfigurable intelligent surfaces detection and identification (RISs-ID) is a critical process that enables a base station (BS) to adaptively assign the appropriate RIS to a given user equipment (UE). This work proposes a novel…

Signal Processing · Electrical Eng. & Systems 2026-05-19 Aymen Khaleel , Adam Umra , Aydin Sezgin

Intelligent reflecting surface (IRS) is a promising technology for enhancing wireless communication systems. It adaptively configures massive passive reflecting elements to control wireless channel in a desirable way. Due to hardware…

Systems and Control · Electrical Eng. & Systems 2021-11-04 Rui Sun , Weidong Wang , Li Chen , Guo Wei , Wenyi Zhang

In the current work we present a new modelling approach for simulating meso-scopic phenomena related to lubrication of the piston ring-cylinder liner contact. Our geometry allows a variable confinement gap and a varying amount of lubricant…

Soft Condensed Matter · Physics 2016-12-28 Konstantinos Gkagkasa , Veerapandian Ponnuchamyb , Miljan Dašić , Igor Stanković

An ion-exchange-resin-based microfluidic pump is introduced that utilizes trace amounts of ions to generate fluid flows. We show experimentally that our pump operates in almost deionized water for periods exceeding 24h and induces fluid…

Interband cascade lasers (ICLs) stand out due to their low threshold current and minimal power consumption, rendering them viable sources for compact and mobile devices in the mid-infrared. Since their first demonstration, they experienced…

Optics · Physics 2024-06-03 Andreas Windischhofer , Nikola Opačak , Benedikt Schwarz

The Interface Region Imaging Spectrograph(IRIS) with its high spatial and temporal resolution brings exceptional plasma diagnostics of solar chromospheric and coronal activity during magnetic reconnection. The aim of this work is to study…

Solar and Stellar Astrophysics · Physics 2021-01-20 Reetika Joshi , Brigitte Schmieder , Akiko Tei , Guillaume Aulanier , Juraj Lörinčík , Ramesh Chandra , Petr Heinzel

Neutral Beam Injectors (NBIs) based on negative ions are the workhorses of future fusion reactors, such as ITER, which they are expected to provide with up to \SI{33}{MW} of power to heat the fusion plasma. The negative hydrogen ions are…