Time-averaged total force on a dipolar sphere in an electromagnetic field.

We establish the time-averaged total force on a subwavelength-sized particle in a time-harmonic-varying field. Our analysis is not restricted to the spatial dependence of the incident field. We discuss the addition of the radiative reaction term to the polarizability to deal correctly with the scattering force. As an illustration, we assess the degree of accuracy of several previously established polarizability models.

• Publication year

  2000

• Venue

  Optics Letters

• Publication date

  2000-08-01

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1364/OL.25.001065arXiv physics/0305043PMID 18064272
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• Several previously established polarizability models are evaluated for their accuracy.

  Confidence 0.88

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• Including the radiative reaction term in the polarizability is discussed as necessary for a correct treatment of the scattering force.

  Confidence 0.94

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• The force analysis is formulated without restricting the spatial dependence of the incident field.

  Confidence 0.91

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• An expression is established for the time-averaged total force acting on a subwavelength dipolar sphere in a time-harmonic electromagnetic field.

  Confidence 0.97

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review

• dipolar sphere

  particle model

  A subwavelength spherical particle modeled as an induced electric dipole.

  Aliases: subwavelength-sized particle, dipolar particle

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• polarizability model

  model

  A theoretical prescription for the particle polarizability used to compute induced dipole response.

  Aliases: polarizability prescription

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• radiative reaction term

  correction term

  A correction added to the polarizability to account for the particle's own radiation effects.

  Aliases: radiation reaction term

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• scattering force

  force component

  The force component associated with momentum transfer from scattered electromagnetic radiation.

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• spatial dependence of incident field

  field property

  The way the incident field varies across space at the particle location.

  Aliases: incident field profile, spatial variation of the incident field

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• time-averaged total force

  quantity

  The average over time of the full electromagnetic force acting on the particle.

  Aliases: average total force

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review
• time-harmonic electromagnetic field

  field

  An electromagnetic field whose amplitudes oscillate sinusoidally in time.

  Aliases: time-harmonic field

  박진우 (dztg5apj7m) extractionB (s683577b42) reviewKiller Whale (322360f1c1) reviewmexicorea (qjvnbu8xg3) review

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