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Advances in atomic resolution in situ environmental transmission electron microscopy for direct probing of gas-solid reactions, including at very high temperatures are described. In addition, recent developments of dynamic real time in situ…

Chemical Physics · Physics 2017-05-17 Pratibha Gai , Edward Boyes

A novel approach for electrochemical tuning of alcohol oxidase (AOx) and alcohol dehydrogenase (ADH) biocatalysis towards butanol-1 oxidation by incorporating enzymes in various designs of amperometric biosensors is presented. The…

Chemical Physics · Physics 2021-02-01 Daria Semenova , Tiago Pinto , Marcus Koch , Krist V. Gernaey , Helena Junicke

Time-resolved charge transport measurement for one-dimensional edge states is a powerful means for investigating nonequilibrium charge dynamics and underlying interaction effects therein. Here, we report a versatile on-chip time-resolved…

Mesoscale and Nanoscale Physics · Physics 2024-09-12 Hiroshi Kamata , Hiroshi Irie , Norio Kumada , Koji Muraki

Drude model successfully quantifies the optical constants for bulk matter, but it is not suitable for subwavelength objects. In this paper, terahertz near-field optical microscopy and finite element simulation are used to study gold patches…

Optics · Physics 2022-11-10 Changlin Wu , Chang Wang , Guanjun You , Juncheng Cao

The understanding of disordered quantum systems is still far from being complete, despite many decades of research on a variety of physical systems. In this review we discuss how Bose-Einstein condensates of ultracold atoms in disordered…

Disordered Systems and Neural Networks · Physics 2010-10-08 Giovanni Modugno

In an effort to locate the cause(s) of high electric-field breakdown in x-band accelerating structures, we have cleanly-autopsied (no debris added by post-operation structure disassembly) an RF-processed structure. Macroscopic localization…

Accelerator Physics · Physics 2009-09-29 F. Le Pimpec , S. Harvey , R. E. Kirby , F. Marcelja

This Thesis present the process of development very low sensitivity to background radiation n-g scintillation detectors with close to 100% efficiency to corpuscular diagnostic of thermonuclear plasma. The detectors developed using this…

Instrumentation and Detectors · Physics 2018-01-08 F. Garcia

We developed highly-sensitive image-current detection systems based on superconducting toroidal coils and ultra-low noise amplifiers for non-destructive measurements of the axial frequencies (550$\sim$800$\,$kHz) of single antiprotons…

Estimating the tortuosity of porous electrodes is important for understanding the performance of lithium-ion batteries and optimizing the design of electrode microstructures. In this work, a new method for estimating the tortuosity of…

Materials Science · Physics 2025-03-10 Zongli Chen , Chenzhe Li , Ying Zhao

We describe a set up for measurements of low frequency (1 mHz < f < 20 Hz) conductance fluctuations in a solid conductor. The set-up uses a five probe a.c. measurement technique and extensive digital signal processing to reach a noise floor…

Other Condensed Matter · Physics 2007-05-23 Arindam Ghosh , Swastik Kar , Aveek Bid , A. K. Raychaudhuri

The conditions for the excitation of current and voltage oscillations in the plasma of a three-electrode current and voltage stabilizer are experimentally investigated. It was found that in the regimes under consideration, the plasma has…

Plasma Physics · Physics 2021-03-03 A. S. Mustafaev , A. Yu. Grabovskiy , B. D. Klimenkov

Noise measurements are a probe beyond simple electronic transport that can reveal additional information about electronic correlations and inelastic processes. Here we report noise measurements in individual electromigrated nanojunctions,…

Mesoscale and Nanoscale Physics · Physics 2013-06-28 P. J. Wheeler , Ruoyu Chen. , D. Natelson

The determination of beam parameters is essential for the operation and development of any accelerator facility. The working principle of frequently used beam instruments for electron and proton beams is discussed. The article comprises of…

Accelerator Physics · Physics 2020-09-23 Peter Forck

Due to the potentially adverse effects of the generation of halo particles in intense proton beams, it is imperative to have a clear understanding of the mechanisms that can lead to halo formation for current and proposed high- intensity…

The design and performance of a low-noise, modular cryogenic probe, applicable to a wide range of measurements over a broad range of working frequencies, temperatures, and magnetic fields is presented. The design of the probe facilitates…

Other Condensed Matter · Physics 2022-10-13 Erick Garcia , Calvin Bales , William Patterson , Alexander Zaslavsky , Vesna F. Mitrović

Controllable atomic-scale quantum systems hold great potential as sensitive tools for nanoscale imaging and metrology. Possible applications range from nanoscale electric and magnetic field sensing to single photon microscopy, quantum…

Mesoscale and Nanoscale Physics · Physics 2012-06-29 P. Maletinsky , S. Hong , M. S. Grinolds , B. Hausmann , M. D. Lukin , R. -L. Walsworth , M. Loncar , A. Yacoby

An axial gas ionization chamber has been fabricated for use as a $\Delta E$ detector in heavy ion induced nuclear reactions. Different operating parameters such as gas type, pressure, anode voltage and anode structures have been optimized.…

Nuclear Experiment · Physics 2008-11-26 S. Adhikari , C. Basu , C. Samanta , S. S. Brahmachari , B. P. Das , P. Basu

A method is advanced allowing for fast regulation of magnetization direction in magnetic nanosystems. The examples of such systems are polarized nanostructures, magnetic nanomolecules, magnetic nanoclusters, magnetic graphene, dipolar and…

Applied Physics · Physics 2022-10-19 V. I. Yukalov , E. P. Yukalova

We report on Landauer-B\"uttiker studies of anomalous Hall transport in a two-dimensional electron gas with Rashba spin-orbit coupling and a magnetization provided by localized magnetic moments. Our system is described by a discretized…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Maria Silvia Garelli , John Schliemann

The temporal characteristics of the Xe$^+$ ion axial Velocity Distribution Function (VDF) were recorded in the course of low-frequency discharge current oscillations ($\sim$~14 kHz) of the 5 kW-class PPS$\circledR$X000 Hall thruster. The…

Plasma Physics · Physics 2009-02-10 S. Mazouffre , D. Gawron , N. Sadeghi
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