利用射频空腔确定低频振动运动的特征

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-09-13 DOI:10.1063/5.0219033
Harold R. Hart-Alesch, Jay E. Sharping
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引用次数: 0

摘要

射频(RF)空腔以前曾用于粒子物理学、量子计算和引力波研究,作为宏观和微观系统中的一种运动传感方法,它在灵敏度和非侵入性方面具有独特的优势。本研究旨在探讨射频腔如何有效地探测和表征室温下毫米尺度悬浮粒子的低频振动运动。在这种情况下,有关粒子是高取向热解石墨的二磁悬浮板。通过计算作用在粒子上的力,并通过慢动作视频对象跟踪进行验证,基于空腔识别了板坯的刚体模式。我们发现,该系统可以精确测量所有六个质量中心自由度的振荡。计算表明,该系统有可能检测到数十飞牛顿的力和小于 10 纳米的质心位移。这项工作提供了一种非侵入式方法,可以在没有超导量子干涉装置和传统干涉测量方法所使用的超低温或笨重的精密激光装置的情况下,在悬浮动力学领域进行位置和振动测量。
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Characterizing low-frequency vibratory motion with radio-frequency cavities
Radio-frequency (RF) cavities, previously employed in particle physics, quantum computing, and gravitational wave research, offer unique advantages in terms of sensitivity and non-invasiveness as a method of sensing motion in both macroscopic and microscopic systems. This research aims to address how an RF cavity can effectively detect and characterize the low-frequency vibratory motion of a room-temperature mm-scale levitated particle. In this case, the particle in question is a diamagnetically levitated slab of highly oriented pyrolytic graphite. Cavity-based identification of the slab’s rigid-body modes is substantiated by calculations of the force acting on the particle and validated through slow-motion video object tracking. We find that this system can accurately measure oscillations in all six center-of-mass degrees of freedom. Calculations indicate that this system could potentially detect forces on the scale of tens of femto-Newtons and center of mass displacements of less than 10 nm. This work provides a non-invasive method of conducting position and vibration measurements in the field of levitodynamics without the ultra-cold temperatures or bulky precision laser setups that superconducting quantum interference devices and conventional interferometric methods utilize.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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