Huang L Martin OJ 2008 We study in detail the optical forces generated by a plasmonic trap on a plasmonic nanoparticle. The permittivity of the trapped particle is tuned using a Drude model. The interplay between the plasmon resonances of the trap and of the particle can produce different regimes leading to attractive or repulsive forces. Hence a particle will be trapped or repulsed depending on its permittivity. Such a physical system should provide new functionalities for lab-on-the-chip applications. application/pdf https://sonar.ch/global/documents/96825 eng info:eu-repo/semantics/altIdentifier/doi/10.1364/ol.33.003001 info:eu-repo/semantics/altIdentifier/pmid/19079520 info:eu-repo/semantics/openAccess Optics letters. - 2008 Reversal of the optical force in a plasmonic trap. http://purl.org/coar/resource_type/c_6501