Semiempirical identification of nonlinear dynamics of a two-degree-of-freedom real torsion pendulum with a nonuniform planar stick–slip friction and elastic barriers
Sign Up to like & getrecommendations! Published in 2020 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-020-05684-6
Abstract: The purpose of this study is to identify the nonlinear dynamics of the double torsion pendulum with planar friction and elastic barriers. The original experimental stand consists of a disk-shaped body that rotates freely on… read more here.
Keywords: friction elastic; nonlinear dynamics; torsion pendulum; pendulum ... See more keywords
Cross-correlated force measurement for thermal noise reduction in torsion pendulum
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DOI: 10.1103/physrevd.111.082006
Abstract: The torsion pendulum is a prevailing instrument for measuring small forces acting on a solid body or those between solid bodies. While it offers powerful advantages, the measurement precision suffers from thermal noises of the… read more here.
Keywords: noise; pendulum cross; torsion; torsion pendulum ... See more keywords
Constraining the Symmetron Model with the HUST-2020 Torsion Pendulum Experiment.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.141101
Abstract: The search for dynamically screening the coupling between the scalar field and matter in high-density environment is achievable with the symmetron model. The high-accuracy and short-range gravity experiment is proposed to test the symmetron model.… read more here.
Keywords: torsion pendulum; symmetron model; symmetron; experiment ... See more keywords
An asymmetrical double torsion pendulum for studying coupled harmonic motion
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DOI: 10.1119/10.0001613
Abstract: In this study, a simple asymmetrical double torsion pendulum is built and operated to study coupled harmonic motion. The setup, which consists of two circular inertia members suspended horizontally at different locations on a vertical… read more here.
Keywords: asymmetrical double; coupled harmonic; torsion pendulum; harmonic motion ... See more keywords
Measuring optical force with a torsion pendulum: A platform for independent student experimentation
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DOI: 10.1119/5.0268585
Abstract: In this work, the force due to radiation pressure is measured with sub-10 pN sensitivity, corresponding to less than 2 mW of optical power. The apparatus adds homemade reflectors to a commercial Cavendish balance, which… read more here.
Keywords: pendulum; torsion pendulum; force; optical force ... See more keywords
Sub-femto-Newton sensing torsion pendulum for detection of light force.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.472130
Abstract: Mechanical oscillators are widely used in many fields of physics, including ultrahigh precision measurements, gravity experiments, and optical mechanical systems. A sub-gram-scale silicon wafer is suspended by a tungsten wire with a diameter of 8 µm,… read more here.
Keywords: torsion pendulum; sub femto; pendulum; detection ... See more keywords