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In recent years, compact nanodosimetric detectors based on ion multiplication in low-pressure gas have been developed and gained attention in the scientific community. These detectors use strong electric fields to collect and multiply…

Electrical current rectification is an interesting electronic feature, popularly known as a diode. Achieving a high rectification ratio in a molecular junction has been a long-standing goal in molecular electronics. The present work…

New technology, the ultrastable low-noise current amplifier and the electron pump, provide new methods for making traceable measurements of small DC electric currents. We review four traceability routes for small current measurements and…

Instrumentation and Detectors · Physics 2020-03-31 Stephen Giblin , Jordan Tompkins

With controlled ionic current rectification (ICR) achieved through a strategically designed non-uniform surface charge distribution, short unipolar nanopores exhibit promising applications in nanofluidic sensors, ionic circuits, and ion…

Chemical Physics · Physics 2025-12-08 Hongwen Zhang , Long Ma , Di Liu , Tianyi Sui , Zuzanna S. Siwy , Yinghua Qiu

Recent theoretical and experimental results have brought renewed interest and focus on the topic of fission fragment angular momentum. Measurements of neutrons and $\gamma$ rays in coincidence with fission fragments remain the most valuable…

Negatively charged nitrogen-vacancy (NV) centers in diamond have been extensively studied as a promising high sensitivity solid-state magnetic field sensor at room temperature. However, their use for current sensing applications is limited…

Instrumentation and Detectors · Physics 2023-04-18 Qihui Liu , Hao Chen , Fei Xie , Yuqiang Hu , Jin Zhang , Nan Wang , Lihao Wang , Yichen Liu , Yang Wang , Zhichao Chen , Lingyun Li , Jiangong Cheng , Zhenyu Wu

Neutron interferometry enables precision measurements that are typically operated within elaborate, multi-layered facilities which provide substantial shielding from environmental noise. These facilities are necessary to maintain the…

Small ions are part of the atmospheric aerosol spectrum, and study of ion-aerosol interactions is fundamental in atmospheric physics. Air ion physics and instrumentation are reviewed, including the historical context. A miniaturised Gerdien…

Atmospheric and Oceanic Physics · Physics 2016-09-08 K. L. Aplin

Quantum magnetometry represents a fundamental component of quantum metrology, where trapped-ion systems have achieved $\rm{pT}/\sqrt{\rm{Hz}}$ sensitivity in single-ion radio-frequency magnetic field measurements via dressed states based…

Quantum Physics · Physics 2025-10-28 Yuxiang Huang , Wei Wu , Qingyuan Mei , Yiheng Lin

Every radiotherapy center has to be equipped with real-time beam monitoring devices. In 2008, the medical application group from the Laboratory of Corpuscular Physics (LPC Caen) developed an Ionization Chamber in collaboration with the…

Instrumentation and Detectors · Physics 2015-06-16 C. Courtois , G. Boissonnat , C. Brusasco , J. Colin , D. Cussol , J. M. Fontbonne , B. Marchand , T. Mertens , S. De Neuter , J. Perronnel

We show that in a simple experiment at undergraduate level, suitable to be performed in classes of science and engineering students, it is possible to test accurately, on a popular 1N4148 p-n diode, the range of the junction currents where…

Physics Education · Physics 2016-08-22 Enrico Cataldo , Alberto Di Lieto , Francesco Maccarrone , Giampiero Paffuti

Accurate measurements of alternating current (AC) and direct current(DC) ratios are fundamental to electric power metrology. However, conventional current comparators for AC and DC typically rely on distinct technologies-electromagnetic…

A liquid isooctane (C$_{8}$H$_{18}$) filled ionization linear array for radiotherapy quality assurance has been designed, built and tested. The detector consists of 128 pixels, each of them with an area of 1.7 mm $\times$ 1.7 mm and a gap…

Medical Physics · Physics 2009-11-10 J. Pardo , L. Franco , F. Gomez , A. Iglesias , A. Pazos , J. Pena , R. Lobato , J. Mosquera , M. Pombar , J. Sendon

Nanopores in solid state membranes are a tool able to probe nanofluidic phenomena or can act as a single molecular sensor. They also have diverse applications in filtration, desalination or osmotic power generation. Many of these…

Soft Condensed Matter · Physics 2020-12-02 Sebastian J. Davis , Michal Macha , Andrey Chernev , David M. Huang , Aleksandra Radenovic , Sanjin Marion

Line current differential relays (LCDRs) are measurement-driven relays that rely on time-synchronized multi-phase current waveforms to infer internal faults in AC and DC power networks. In inverter-based microgrids, however, the increasing…

Cryptography and Security · Computer Science 2026-04-28 Ahmad Mohammad Saber , Ahmed Saber Refae , Davor Svetinovic , Hatem Zeineldin , Amr Youssef , Ehab F. El-Saadany , Deepa Kundur

Power consumption is a crucial aspect of IoT devices which often have to run on a battery for an extended period of time. Therefore, supply current measurements are crucial before deploying a device in the field. Multimeters and…

Signal Processing · Electrical Eng. & Systems 2026-01-26 Julian Block , Andreas Könsgen , Jens Dede , Anna Förster

In drug discovery research there is a clear and urgent need for non-invasive detection of cell membrane ion channel operation with wide-field capability. Existing techniques are generally invasive, require specialized nano structures, or…

A single width NIM module that includes eight channels TAC (time-to-amplitude converter) and QAC (charge-to-amplitude converter) is introduced in the paper, which is designed for the large neutron wall detector to measure charge (energy)…

Instrumentation and Detectors · Physics 2014-04-23 She Qian-Shun , Su Hong , Qian Yi , Yu Yu-Hong

Beam measurement is very important for accelerators. With the development of analog-to-digital conversion techniques, digital beam measurement becomes a research hot spot. IQ (In-phase & Quadrature-phase) analysis based method is an…

Accelerator Physics · Physics 2016-08-03 Lei Zhao , Linsong Zhan , Xingshun Gao , Shubin Liu , Qi An

Variational algorithms are a promising paradigm for utilizing near-term quantum devices for modeling electronic states of molecular systems. However, previous bounds on the measurement time required have suggested that the application of…