Liberal Olleta, ÍñigoEderra Urzainqui, ÍñigoGonzalo García, RamónZiolkowski, Richard W.2017-08-042017-08-042013Liberal, I. )., Ederra, I. )., Gonzalo, R. )., & Ziolkowski, R. ). (2013). Near-field electromagnetic trapping through curl-spin forces. Physical Review A - Atomic, Molecular, And Optical Physics, 87(6), doi:10.1103/PhysRevA.87.0638071050-2947 (Print)1094-1622 (Electronic)10.1103/PhysRevA.87.063807https://academica-e.unavarra.es/handle/2454/24937Near-field electromagnetic trapping of particles is generally obtained bymeans 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.9 p.application/pdfeng©2013 American Physical SocietyNear-field electromagnetic trappingCurl-spin forcesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess