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Intermittent fluctuations in the TCV scrape-off layer have been investigated by analysing long Langmuir probe data time series under stationary conditions, allowing calculation of fluctuation statistics with high accuracy. The ion…

等离子体物理 · 物理学 2018-05-04 A. Theodorsen , O. E. Garcia , J. Horacek , R. Kube , R. A. Pitts

We propose a new scheme for supplying voltages to the electrodes of microfabricated ion traps, enabling access to a regime in which changes to the trapping potential are made on timescales much shorter than the period of the secular…

量子物理 · 物理学 2015-09-29 J. Alonso , F. M. Leupold , B. C. Keitch , J. P. Home

Trapped ions are among the leading candidates for quantum computing technologies. Interfacing ion qubits in separate traps and interfacing ion qubits with superconducting qubits are two of the many challenges to scale up quantum computers.…

量子物理 · 物理学 2021-06-01 Noah Van Horne , Manas Mukherjee

Isolating neutral and charged particles from the environment is essential in precision experiments. For decades, this has been achieved by trapping ions with radio-frequency (rf) fields and neutral particles with optical fields. Recently,…

原子物理 · 物理学 2021-05-05 Tobias Schaetz

Trapping macromolecules is impoartant for the study of their conformations, interactions, dynamics and kinetic processes. Here, we develop a variational approach which self-consistently introduces a mean force that controls the…

软凝聚态物质 · 物理学 2024-04-23 Luofu Liu , Chao Duan , Rui Wang

The trap-induced hysteresis on the performance of a graphene field-effect transistor is experimentally diminished here by applying consecutive gate-to-source voltage pulses of opposing polarity. This measurement scheme is a practical and…

介观与纳米尺度物理 · 物理学 2020-10-29 Anibal Pacheco-Sanchez , Nikolaos Mavredakis , Pedro C. Feijoo , Wei Wei , Emiliano Pallecchi , Henri Happy , David Jiménez

Using a combination of molecular dynamics simulations and fundamental statistical mechanics, we analyze the position and velocity distribution of a trapped ion immersed in two ideal gases at differing temperatures. Such a system has been…

统计力学 · 物理学 2015-10-23 Christian Vaca , Kuang Chen , Eric Hudson , Alex J. Levine

We propose a possible charge fluctuation effect expected in layered superconducting materials. In the multireference density functional theory, relevant fluctuation channels for the Josephson coupling between superconducting layers include…

超导电性 · 物理学 2015-05-14 Koichi Kusakabe

We investigate the position oscillation of a particle that models the center of mass quantum state of a trapped Bose-Einstein condensate coupled to the zero-point fluctuations of the gravitational field. A semiclassical analysis is…

广义相对论与量子宇宙学 · 物理学 2013-01-07 Charles H. -T. Wang , Robert Bingham , J. Tito Mendonca

Test modes on turbulent magnetized plasmas are studied taking into account the ion trapping that characterizes the E x B drift in the background turbulence. We show that trappyng provides the physical mechanism for the formation of large…

等离子体物理 · 物理学 2012-09-11 Madalina Vlad

Modeling the electronic and optical properties of organic semiconductors remains a challenge for theory, despite the remarkable progress achieved in the last three decades. The complexity of these systems, including structural (dis)order…

Understanding defect effect on carrier dynamics is essential for both fundamental physics and potential applications of transition metal dichalcogenides. Here, the phenomenon of oxygen impurities trapping photo-excited carriers has been…

Excitations of MHz acoustic modes are studied numerically in 10-um-thick silicon disk membranes with a radius of 100 and 500 um actuated by an attached 1-um-thick (AlSc)N thin-film transducer. It is shown how higher-harmonic membrane modes…

流体动力学 · 物理学 2021-12-24 André G. Steckel , Henrik Bruus

Doped organic semiconductors are critical to emerging device applications, including thermoelectrics, bioelectronics, and neuromorphic computing devices. It is commonly assumed that low conductivities in these materials result primarily…

Electronic trap states are a critical yet unavoidable aspect of semiconductor devices, impacting performance of various electronic devices such as transistors, memory devices, solar cells, and LEDs. The density, energy level, and position…

In this paper the authors describe a theoretical simple statistical modelling of relaxation process in metal-oxide semiconductor devices that governs its degradation. Basically, starting from an initial state where a given number of traps…

材料科学 · 物理学 2015-05-18 Roberto da Silva , Gilson I. Wirth

Stability is one of the most important challenges facing organic solar cells (OSC) on their path to commercialization. In the high-performance material system PM6:Y6 studied here, investigate degradation mechanisms of inverted photovoltaic…

We show how a single trapped ion may be used to test a variety of important physical models realized as time-dependent harmonic oscillators. The ion itself functions as its own motional detector through laser-induced electronic transitions.…

量子物理 · 物理学 2007-12-23 Nicolas C. Menicucci , G. J. Milburn

We study the coupled current and magnetization noise in magnetic nanostructures by magnetoelectronic circuit theory. Spin current fluctuations, which depend on the magnetic configuration, are found to be an important source of magnetization…

介观与纳米尺度物理 · 物理学 2015-05-13 Jorn Foros , Arne Brataas , Gerrit E. W. Bauer , Yaroslav Tserkovnyak

Fluctuation analysis is a method which allows measurement of the single channel current of ion channels even when it is too small to be resolved directly with the patch clamp technique. This is the case for voltage-gated Ca2+ channels…

神经元与认知 · 定量生物学 2017-12-13 Christian Scheppach , Hugh P. C. Robinson