There is disclosed a fluid-transfer article which is suitable for use as part of an aerosol-generating system of a type which may be used as a smoking substitute. The fluid-transfer article comprises a first region for holding an aerosol precursor and for transferring said aerosol precursor to an activation surface of a second region of said article, said activation surface being disposed at an end of said article. The activation surface has at least one channel therein, with the or each channel opening outwardly of the activation surface. Heater elements 24 are formed on the activation surface between the or each channel, to enable the fluid-transfer article to be heated to release the aerosol precursor as vapour or a mixture of vapour and aerosol. The heater elements are of a dried conductive fluid, with suitable electrical connections. The conductive fluid may be applied by dipping the fluid-transfer article in the fluid to cause the fluid to adhere to, or otherwise coat, the appropriate part or parts of the activation surface. The conductive fluid is then dried, and a voltage can be applied there to cause the heater elements 24 to heat.
