Abstract
Vapomechanical actuation triggered through chemical vapors by employing soft smart materials is the most recent and less-explored area of actuators research having powerful applications in the field of chemical sensors/detectors. A tubular shaped actuator driven by chloroform vapors based on graphene-polydimethylsiloxane nanocomposite/gold bilayers has been realized. The tubular shape of actuator is transformed into a planar sheet within about 1.7 s time under the exposure of chloroform vapors with vapor pressure of 57 kPa. The shape switching time of this actuator varies linearly with vapor pressure of chloroform. These vapomechanical actuators may find potential uses in the development of smart chemical sensors which are cheap, easy to use and do not require any electrical power for their operations.
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