The proposed device comprises a plurality of electroactive material actuator units arranged as a set. Control data for driving individual units is transferred over three shared power lines. The electroactive material actuator of each unit is driven depending on control data received from the power lines via a demodulator, a controller, and a driver.

A generator configured to generate electrical energy from heat, for example from sunlight. The generator includes: a moveable carrier connected to a kinetic-electric converter; and a stationary support. One of the carrier and the support is provided with a magnet and the other is provided with separate ferromagnetic elements. A heat supply is associated with the one of the carrier and the support that is provided with the magnet to direct heat onto successively at least one of the ferromagnetic elements to warm the ferromagnetic element to above a Curie temperature thereof, to thereby impart reciprocal movement of the carrier relative to the support through magnetic interaction between the magnet and the ferromagnetic elements. A cooling system such as a thermo-electric generator or a heat sink is configured for cooling at least one of the magnet and the ferromagnetic elements.

The proposed device comprises a plurality of electroactive material actuator units (20) arranged as a set. Control data for driving individual units is transferred over three shared power lines (Vop, Vop2, Vref). The electroactive material actuator (21) of each unit (20) is driven depending on control data received from the power lines via a demodulator (24), a controller (26), and a driver (28).

The invention relates to an aerosol generation system comprising an aerosol generation device having a heating element and a consumable for use with the aerosol generation device. The heat transfer element can be heated by the heating element of the aerosol generation device when the consumable is attached to the aerosol generation device. The heat transfer element is configured to be deformed when its temperature is at or above a threshold temperature, such that an area of contact, which exists between the heating element and the heat transfer element when the consumable is attached to the aerosol generation device and the temperature of the heat transfer element is below the threshold temperature, can be reduced, or eliminated.