Controlled shape morphing of solvent free thermoresponsive soft actuators

Abstract

Reconfigurable actuators are designed based on chitosan and pNipam which has the capability to attain precise and programmable actuation. The current approach offers a feasible way to fabricate soft actuators with repeatable and reversible actuation.

Giving Penetrable Remote-Control Ability to Thermoresponsive Fibrous Composite Actuator with Fast Response Induced by Alternative Magnetic Field

“…Contrarily, the actuation of the traditional thermoresponsive actuators is highly dependent on the outer heat source, and the medium between the outer heat source and the actuator consumes most of the heat, lowering the efficiency. It is highly dependent on the temperature change outside the actuator [ 36 , 37 ]. Furthermore, the efficiency of heat transfer can benefit from the high porosity of the fibrous mat rather than the compact structure of film.…”

Folding Control of Hydrogel Platforms through Pattern Design and Light Illumination

“…Anju et. al also reported a chitosan-poly­( N -isopropylacrylamide) bilayer film . The fabricated bilayer film showed reversible actuation when exposed to physiological range of body temperature without any solvent bath around.…”

“…al also reported a chitosan-poly(Nisopropylacrylamide) bilayer film. 23 The fabricated bilayer film showed reversible actuation when exposed to physiological range of body temperature without any solvent bath around. It is obvious that exploring new foldable materials and strategies are important not only to widen the scope of shape-changing platforms for potential applications but also to understand key parameters that controls folding mechanisms.…”

Multi-stimuli-responsive actuator based on bilayered thermoplastic film

“…In recent years, inspired by biological examples that can convert external stimuli 1 (e.g., light, 2-5 electricity, [6][7][8][9] thermal, 10,11 chemicals, 12,13 humidity 14,15 and so on) into macroscopic movements, smart soft actuators have attracted widespread attention due to their potential applications, such as in soft robots, 16,17 artificial muscles, 18,19 target capture/release, 20 and biomimetic actuation. [21][22][23] A well-known assembly strategy known as the ''asymmetric bilayer'' method has been widely adopted to fabricate soft actuators containing bilayers or multilayers. 24 Bilayered soft actuators generally consist of an active layer and a passive one.…”

“…, light, 2–5 electricity, 6–9 thermal, 10,11 chemicals, 12,13 humidity 14,15 and so on) into macroscopic movements, smart soft actuators have attracted widespread attention due to their potential applications, such as in soft robots, 16,17 artificial muscles, 18,19 target capture/release, 20 and biomimetic actuation. 21–23…”