A nebuliser for nebulising liquid droplets, including: a housing； at least one piezoelectric substrate (2,12,13) accommodated within the housing and having a transducer surface (2a, 12a, 13a) upon which is located at least one electroacoustic transducer for generating acoustic wave energy within the substrate, and an opposing non-transducer surface (2b, 12b, 13b)； and a liquid supply system for supplying a liquid (4) to at least one of the transducer and non-transducer surfaces, the liquid supply system including a reservoir (3) for accommodating the liquid, and at least one relatively rigid supply conduit (6) in contact with the substrate for supplying the liquid from the reservoir to the substrate.
