The invention relates to a system for the heating, ventilation, andor air conditioning of a motor vehicle passenger compartment. The polarization coupler and the polarization rotator are in optical communication with each other. The conductor loop is a thin filament of wire that is preferably attached to the ends of the side walls. The substrate can comprise one, two or three layers. The methods and assemblies use first and second mounting plates that are deflectably and removably attachable to the article, with the first mounting plate being adhesively attachable to a first wall, and the second mounting plate being adhesively attachable to the second wall. This invention provides an apparatus comprising a structure for receiving the vessel, an agitating member capable of receiving the vessel, and a motor operatively communicating with the agitating member to substantially uniformly agitate the fluid suspension.