Recent quantum electrodynamical studies on optically induced inter-particle potential energy surfaces have revealed unexpected features of considerable intricacy. The exploitation of these features presents a host of opportunities for the optical fabrication of nanoscale structures, based on the fine control of a variety of attractive and repulsive forces, and the torques that operate on particle pairs. Here we report an extension of these studies, exploring the first detailed potential energy surfaces for a system of three particles irradiated by a polarized laser beam. Such a system is the key prototype for developing generic models of multi-particle complexity. The analysis identifies and characterizes potential points of stability, as well as forces and torques that particles experience as a consequence of the electromagnetic fields, generated by optical perturbations. Promising results are exhibited for the optical fabrication of assemblies of molecules, nanoparticles, microparticles, and colloidal multi-particle arrays. The comprehension of mechanism that is emerging should help determine the fine principles of multi-particle optical assembly.
|Title of host publication||Nanophotonics II|
|Editors||DL Andrews, J-M Nunzi, A Ostendorf|
|Publication status||Published - 23 Apr 2008|
|Event||Nanophotonics II - Strasbourg, France|
Duration: 7 Apr 2008 → …
|Name||Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE)|
|Period||7/04/08 → …|