The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect

Gunawan, Oki; Virgus, Yudistira

doi:10.1063/1.4978876

Title: The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect

Abstract

We recently demonstrated a magnetic parallel dipole line (PDL) system that serves as a unique diamagnetic trap with a fascinating one-dimensional camelback potential along its longitudinal axis. The system can be realized with a pair of transversely magnetized cylindrical magnets and a cylindrical graphite rod as the trapped object. In this paper, we present more detailed experimental and theoretical studies of the finite size effect of the rod and its impact on the stability and oscillation dynamics of the trap. We show that the camelback potential effect only occurs when the length of the PDL system is beyond certain critical length (L_C). The length of the trapped rod determines the “effective camelback potential” and is subject to maximum and minimum values for the trap to be stable. Both length and radius of the rod determine the damping dynamics or the quality factor of the oscillator. Finally, these characteristics are important for designing the PDL trap system for various sensing applications, for example, we demonstrated a PDL trap gas viscometer system through measurement of the oscillation damping time constant.

Authors:

^[1]; Virgus, Yudistira ^[1]

IBM T. J. Watson Research Center, Yorktown Heights, NY (United States)

Publication Date:: Tue Apr 04 00:00:00 EDT 2017

Research Org.:: IBM T. J. Watson Research Center, Yorktown Heights, NY (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1465332

Alternate Identifier(s):: OSTI ID: 1993649

Grant/Contract Number:: AR0000540

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 121; Journal Issue: 13; Journal ID: ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; oscillators; magnetic levitation devices; magnetic materials; viscosity; drag reduction; graphite; parallel processing; magnetic fields; diamagnetism

Citation Formats


                    Gunawan, Oki, and Virgus, Yudistira. The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect.  United States: N. p., 2017. 
Web.  doi:10.1063/1.4978876.

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                    Gunawan, Oki, & Virgus, Yudistira. The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect.  United States.  https://doi.org/10.1063/1.4978876

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                    Gunawan, Oki, and Virgus, Yudistira. Tue .  
"The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect".  United States.  https://doi.org/10.1063/1.4978876.  https://www.osti.gov/servlets/purl/1465332.

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@article{osti_1465332,

  title        = {The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect},

  author       = {Gunawan, Oki and Virgus, Yudistira},

  abstractNote = {We recently demonstrated a magnetic parallel dipole line (PDL) system that serves as a unique diamagnetic trap with a fascinating one-dimensional camelback potential along its longitudinal axis. The system can be realized with a pair of transversely magnetized cylindrical magnets and a cylindrical graphite rod as the trapped object. In this paper, we present more detailed experimental and theoretical studies of the finite size effect of the rod and its impact on the stability and oscillation dynamics of the trap. We show that the camelback potential effect only occurs when the length of the PDL system is beyond certain critical length (LC). The length of the trapped rod determines the “effective camelback potential” and is subject to maximum and minimum values for the trap to be stable. Both length and radius of the rod determine the damping dynamics or the quality factor of the oscillator. Finally, these characteristics are important for designing the PDL trap system for various sensing applications, for example, we demonstrated a PDL trap gas viscometer system through measurement of the oscillation damping time constant.},

  doi          = {10.1063/1.4978876},

  journal      = {Journal of Applied Physics},

  number       = 13,

  volume       = 121,

  place        = {United States},

  year         = {Tue Apr 04 00:00:00 EDT 2017},

  month        = {Tue Apr 04 00:00:00 EDT 2017}

}

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Works referenced in this record:

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A parallel dipole line system
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Gunawan, Oki; Virgus, Yudistira; Tai, Kong Fai
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Works referencing / citing this record:

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journal, October 2019

Gunawan, Oki; Pae, Seong Ryul; Bishop, Douglas M.
Nature, Vol. 575, Issue 7781
DOI: 10.1038/s41586-019-1632-2

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Title: The one-dimensional camelback potential in the parallel dipole line trap: Stability conditions and finite size effect

Abstract

Citation Formats

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Diamagnetic Cylindrical Bar in a Field
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The Orientation of Paramagnetic and Diamagnetic Rods in Magnetic Fields
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