Construction of multi-functional transparent 3D architectures via photothermal heating

초록

Contactless construction of 3-dimentional (3D) non-Euclidean architecture from 2-dimentional (2D) flat geometry upon exposure to external stimuli has recently drawn a great attention from materials communities. In particular, photothermal heating of black ink pattern method suggested facile localized contraction of shape memory polymers. However, the ink patterns remain after the photothermal actuation, causing potential undesirable actuation from external stimuli. In this study, we demonstrate a facile construction of transparent complex 3D curvilinear structures using patterned black adhesives. Under exposure to near infrared (NIR) light, temperature of the biaxially-stretched polystyrene is locally elevated at black adhesive patterned areas above the glass transition temperature (T­g). After 3D shape-morphing via local contraction of the films, the adhesive patterns are simply removed to achieve transparent polymers to prevent further actuation. In this presentation, we will discuss radial and chiral pattern designs for complex 3D architectures and utilization of non-responsive flexible materials as well as conductive substance to endow multifunctionality for the shape-reconfigurable systems.