The team, which includes scientists from Sungkyunkwan University (SKKU) and Seoul National University (SNU), reported that the actuator is 100 µm thick and produces a displacement of around 1050 µm. The sheet resistance of the graphene electrode used in the test setup was 92 Ω/square and the optical transmittance of the actuator was measured to be 84.5%.

In experiments the researchers demonstrated the application of a graphene electrode and OCA film as a novel actuator for use in tactile displays, and validated that the actuator can operate even when stretched to 25% of its length without severely degrading its actuating performance.

A touch interface can be formed by combining the actuator with a sensor to create functional touch-screen panel devices.

Full details can be found in the journal Nanotechnology.