Absolute measurement of thermal noise in a resonant short-range force experiment

H. Yan; E. A. Housworth; H. O. Meyer; G. Visser; E. Weisman; J. C. Long

doi:10.1088/0264-9381/31/20/205007

Absolute measurement of thermal noise in a resonant short-range force experiment

H. Yan
, E. A. Housworth
, H. O. Meyer
, G. Visser
, E. Weisman
, J. C. Long

Research output: Contribution to journal › Article › peer-review

Abstract

Planar, double-torsional oscillators are especially suitable for short-range macroscopic force search experiments, since they can be operated at the limit of instrumental thermal noise. As a study of this limit, we report a measurement of the noise kinetic energy of a polycrystalline tungsten oscillator in thermal equilibrium at room temperature. The fluctuations of the oscillator in a high-Q torsional mode with a resonance frequency near 1 kHz are detected with capacitive transducers coupled to a sensitive differential amplifier. The electronic processing is calibrated by means of a known electrostatic force and input from a finite-element model. The measured average kinetic energy, E_exp = (2.0 ± 0.3) × 10^-21 J, is in agreement with the expected value of 1/2k_BT.

Original language	English (US)
Article number	205007
Journal	Classical and Quantum Gravity
Volume	31
Issue number	20
DOIs	https://doi.org/10.1088/0264-9381/31/20/205007
State	Published - Oct 21 2014
Externally published	Yes

Keywords

equipartition theorem
short-range tests of gravity
thermal noise measurements
torsional oscillators

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Online availability

10.1088/0264-9381/31/20/205007

Library availability

Discover UIUC Full Text

Cite this

@article{c606775c647f404bbaa95ae1f5299ad4,

title = "Absolute measurement of thermal noise in a resonant short-range force experiment",

abstract = "Planar, double-torsional oscillators are especially suitable for short-range macroscopic force search experiments, since they can be operated at the limit of instrumental thermal noise. As a study of this limit, we report a measurement of the noise kinetic energy of a polycrystalline tungsten oscillator in thermal equilibrium at room temperature. The fluctuations of the oscillator in a high-Q torsional mode with a resonance frequency near 1 kHz are detected with capacitive transducers coupled to a sensitive differential amplifier. The electronic processing is calibrated by means of a known electrostatic force and input from a finite-element model. The measured average kinetic energy, Eexp = (2.0 ± 0.3) × 10-21 J, is in agreement with the expected value of 1/2kBT.",

keywords = "equipartition theorem, short-range tests of gravity, thermal noise measurements, torsional oscillators",

author = "H. Yan and Housworth, \{E. A.\} and Meyer, \{H. O.\} and G. Visser and E. Weisman and Long, \{J. C.\}",

note = "Publisher Copyright: {\textcopyright} 2014 IOP Publishing Ltd.",

year = "2014",

month = oct,

day = "21",

doi = "10.1088/0264-9381/31/20/205007",

language = "English (US)",

volume = "31",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "20",

}

TY - JOUR

T1 - Absolute measurement of thermal noise in a resonant short-range force experiment

AU - Yan, H.

AU - Housworth, E. A.

AU - Meyer, H. O.

AU - Visser, G.

AU - Weisman, E.

AU - Long, J. C.

PY - 2014/10/21

Y1 - 2014/10/21

N2 - Planar, double-torsional oscillators are especially suitable for short-range macroscopic force search experiments, since they can be operated at the limit of instrumental thermal noise. As a study of this limit, we report a measurement of the noise kinetic energy of a polycrystalline tungsten oscillator in thermal equilibrium at room temperature. The fluctuations of the oscillator in a high-Q torsional mode with a resonance frequency near 1 kHz are detected with capacitive transducers coupled to a sensitive differential amplifier. The electronic processing is calibrated by means of a known electrostatic force and input from a finite-element model. The measured average kinetic energy, Eexp = (2.0 ± 0.3) × 10-21 J, is in agreement with the expected value of 1/2kBT.

AB - Planar, double-torsional oscillators are especially suitable for short-range macroscopic force search experiments, since they can be operated at the limit of instrumental thermal noise. As a study of this limit, we report a measurement of the noise kinetic energy of a polycrystalline tungsten oscillator in thermal equilibrium at room temperature. The fluctuations of the oscillator in a high-Q torsional mode with a resonance frequency near 1 kHz are detected with capacitive transducers coupled to a sensitive differential amplifier. The electronic processing is calibrated by means of a known electrostatic force and input from a finite-element model. The measured average kinetic energy, Eexp = (2.0 ± 0.3) × 10-21 J, is in agreement with the expected value of 1/2kBT.

KW - equipartition theorem

KW - short-range tests of gravity

KW - thermal noise measurements

KW - torsional oscillators

UR - https://www.scopus.com/pages/publications/84908192301

UR - https://www.scopus.com/pages/publications/84908192301#tab=citedBy

U2 - 10.1088/0264-9381/31/20/205007

DO - 10.1088/0264-9381/31/20/205007

M3 - Article

AN - SCOPUS:84908192301

SN - 0264-9381

VL - 31

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 20

M1 - 205007

ER -

Absolute measurement of thermal noise in a resonant short-range force experiment

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this