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A new approach to the measurement of gravitational fields with an equilibrium ensemble of ultra-cold alkali atoms confined in a cell of volume $V$ is investigated. The proposed model of the gravitational sensor is based on a variation of…

量子物理 · 物理学 2009-11-11 Igor Kulikov

This article aims to propose a novel analytical model for anisotropic multi-layer elliptical structures incorporating graphene layers. The multi-layer structure is formed of various magnetic materials. An external magnetic bias has been…

光学 · 物理学 2021-03-10 Mohammad Bagher Heydari , Mohammad Hashem Vadjed Samiei

Active microelectromechanical systems can couple the nanomechanical domain with the electronic domain by integrating electronic sensing and actuation mechanisms into the micromechanical device. This enables very fast and sensitive…

The first analytical evaluation of free-hinged-hinged-hinged-free beam, proposed to be used as a primary sensing element for gravity gradiometry, is presented. The results of the evaluation, obtained in quadratures, are applied to the…

应用物理 · 物理学 2022-01-20 Alexey V Veryaskin , Thomas J Meyer

The focus of studies on ferromagnetic semiconductors is moving from material issues to device functionalities based on novel phenomena often associated with the anisotropy properties of these materials. This is driving a need for a method…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Hümpfner , M. Sawicki , K. Pappert , J. Wenisch , K. Brunner , C. Gould , G. Schmidt , T. Dietl , L. W. Molenkamp

Interfacing quantum mechanics and gravity is one of the great open questions in natural science. Micromechanical oscillators have been suggested as a plausible platform to carry out these experiments. We present an experimental design…

介观与纳米尺度物理 · 物理学 2021-03-10 Yulong Liu , Jay Mummery , Mika A. Sillanpää

We show that the gravitational acceleration can be measured with the matter-wave Ramsey interferometry, by using a nitrogen-vacancy center coupled to a nano-mechanical resonator. We propose two experimental methods to realize the…

量子物理 · 物理学 2018-11-27 Xing-yan Chen , Zhang-qi Yin

The automated finite element analysis of complex CAD models using boundary-fitted meshes is rife with difficulties. Immersed finite element methods are intrinsically more robust but usually less accurate. In this work, we introduce an…

数值分析 · 数学 2026-01-28 Eky Febrianto , Jakub Sistek , Pavel Kus , Matija Kecman , Fehmi Cirak

The MOS devices are the basic building block of any digital and analog circuits, where silicon (Si) is the most commonly used material. The International Technology Roadmap Semiconductor (ITRS) report predicts the gate length of the MOS…

Recent advances in glass fabrication technology have allowed for the development of high-precision inertial sensors in devices weighing in the order of grams. Gram-scale inertial sensors can be used in many applications with tight space or…

仪器与探测器 · 物理学 2024-08-13 Jonathan J. Carter , Pascal Birckigt , Oliver Gerberding , Sina M. Koehlenbeck

We present the coupled oscillator: a new mechanism for signal amplification with widespread application in metrology. We introduce the mechanical theory of this framework, and support it by way of simulations. We present a particular…

应用物理 · 物理学 2024-05-24 Ian Bouche , Josh Javor , Abhishek Som , David K. Campbell , David J. Bishop

Microelectromechanical systems (MEMS) technologies are developing rapidly with increasing study of the design, fabrication and commercialization of microscale systems and devices. Accurate knowledge on the mechanical behaviors of thin film…

其他计算机科学 · 计算机科学 2008-02-22 Ming-Tzer Lin , K. -S. Shiu , Chi-Jia Tong

The unprecedented sensitivity of the Laser Interferometer Gravitational-Wave Observatory, which enables the detection of distant astrophysical sources, also renders the detectors highly susceptible to low-frequency ground motion. Persistent…

Interest in creating magnetic metamaterials has led to methods for growing superstructures of magnetic nanoparticles. Mesoscopic crystals of maghemite ($\gamma\text{-Fe}_2\text{O}_3$) nanoparticles can be arranged into highly ordered…

介观与纳米尺度物理 · 物理学 2021-01-05 B. Gross , S. Philipp , E. Josten , J. Leliaert , E. Wetterskog , L. Bergström , M. Poggio

The aim of this paper is to deal with multi-physics simulation of micro-electro-mechanical systems (MEMS) based on an advanced numerical methodology. MEMS are very small devices in which electric as well as mechanical and fluid phenomena…

其他计算机科学 · 计算机科学 2007-11-29 V. Rochus , J. -C. Golinval , C. Louis , C. Mendez , I. Klapka

This work studies scattering-induced elastic wave attenuation and phase velocity variation in 3D untextured cubic polycrystals with statistically equiaxed grains using the theoretical second-order approximation (SOA) and Born approximation…

经典物理 · 物理学 2022-02-17 Ming Huang , Peter Huthwaite , Stanislav I. Rokhlin , Michael J. S. Lowe

Functionally graded materials (FGMs) are two-phase composites with continuously changing microstructure adapted to performance requirements. Traditionally, the overall behavior of FGMs has been determined using local averaging techniques or…

材料科学 · 物理学 2011-08-31 Zahra Sharif-Khodaei , Jan Zeman

The numerical simulation of physical processes in the underground frequently entails challenges related to the geometry and/or data. The former are mainly due to the shape of sedimentary layers and the presence of fractures and faults,…

数值分析 · 数学 2020-02-28 Alessio Fumagalli , Anna Scotti , Luca Formaggia

The resistivity scaling of metals is a crucial limiting factor for further downscaling of interconnects in nanoelectronic devices that affects signal delay, heat production, and energy consumption. Here, we generalize a commonly considered…

材料科学 · 物理学 2022-12-29 Kristof Moors , Kiroubanand Sankaran , Geoffrey Pourtois , Christoph Adelmann

The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment, located at the Antimatter Factory at CERN, aims to study the asymmetry between matter and antimatter. In particular, its first goal is to measure the…

高能物理 - 实验 · 物理学 2023-06-08 Marco Volponi