A system and method for adaptive marketing using insight driven customer interaction. The contrast-to-tissue ratio and signal-to-noise ratio for contrast agent imaging is improved by transmitting a waveform with pulses at two or more frequencies. The vapor-deposited sections are formed with gaps therebetween, and the wires having respective terminals that are disposed in the gaps. A wire heating element is resiliently supported by opposing spring members so that when the refill assembly is received within the retainer, the spring members bias the heating element against the emanating surface of the wick while yielding an amount sufficient to prevent the heating element from breaking. The invention is characterised in that its silicone coating is derived from polymerisation andor crosslinking of polyorganosiloxane monomers, oligomers andor polymers and said silicone coating further comprises at least an additive regulating the release force of a siliconeadhesive interface and whereof the activity is initiated and capable of being modulated by electron beam irradiation.