Near-field electromagnetic trapping through curl-spin forces

Iñigo Liberal, Iñigo Ederra, Ramón Gonzalo, Richard W Ziolkowski

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Near-field electromagnetic trapping of particles is generally obtained by means of gradient forces. In this paper, we discuss the attractive behavior of curl-spin forces, as well as their potential for near-field electromagnetic trapping and manipulation. It is demonstrated that curl-spin forces enable the trapping of particles operating at their resonant frequency. Such phenomena can be exploited to design more efficient and selective electromagnetic traps, to boost near-field energy exchange systems, and to bring stability to coupled resonant radiators. It also is illustrated how the balance between the gradient, radiation pressure, and curl-spin force components leads to the formation of zero-force rings around their sources, which explicitly demarcate the trapping regions. Analytical and numerical analyses are presented to assess the stability of the trapping mechanism.

Original languageEnglish (US)
Article number063807
JournalPhysical Review A
Volume87
Issue number6
DOIs
StatePublished - Jun 5 2013

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near fields
trapping
electromagnetism
gradients
radiation pressure
radiators
acceleration (physics)
resonant frequencies
manipulators
energy transfer
traps
rings

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Near-field electromagnetic trapping through curl-spin forces. / Liberal, Iñigo; Ederra, Iñigo; Gonzalo, Ramón; Ziolkowski, Richard W.

In: Physical Review A, Vol. 87, No. 6, 063807, 05.06.2013.

Research output: Contribution to journalArticle

Liberal, Iñigo ; Ederra, Iñigo ; Gonzalo, Ramón ; Ziolkowski, Richard W. / Near-field electromagnetic trapping through curl-spin forces. In: Physical Review A. 2013 ; Vol. 87, No. 6.
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