The present invention provides for increasing fluorescence detection in surface assay systems while increasing kinetics of a bioreaction therein by providing low-power microwaves to irradiate metallic materials within the system in an amount sufficient to increase heat thereby affecting the kinetics of a bioreaction therein. The graphite emulsion bonds the graphite foil to the metal plate and seals fine scale porosities in the graphite foil. Each electronic shopping cart has an indication of items currently within the electronic shopping cart and billing and shipment information. The egress network receives the packetized voice signal, converts the packetized voice signal into an output voice signal, and outputs the output voice signal.