Magnetic Actuation of Hollow Swarming Spheres for Dynamic Catalysis

Stimuli-Responsive Polymers for Tubal Actuators

Stimuli-responsive polymers for tubal actuators have garnered significant attention due to their potential applications in soft robotics, artificial blood vessels, controlled liquid transportation, and microchemical reactors. This perspective emphasizes the advantages, response mechanisms, and fundamental design principles of stimuli-responsive polymers for tubal actuators. It also addresses the biological and engineering applications, current challenges, and future prospects of stimuli-responsive polymers for tubal actuators. The discussion categorizes stimuli-responsive polymers for tubal actuators based on various properties, including liquid crystal elastomer actuators, hydrogel actuators, and shape memory polymer actuators. The subsequent sections focuses on the structural features, design principles, and biological applications of stimuli-responsive polymers for tubal actuator, elucidating their potential interrelationships. The molecular architectures and design principles are intricately linked to the stimuli-responsive mechanisms. Finally, this perspective outlines the challenges faced by stimuli-responsive polymers for tubal actuators. This article aims to facilitate broader applications of stimuli-responsive polymers for tubal actuators, thereby promoting progress across multiple fields.

Remote and precise control over morphology and motion of organic crystals by using magnetic field

Elastic organic crystals are the materials foundation of future lightweight flexible electronic, optical and sensing devices, yet precise control over their deformation has not been accomplished. Here, we report a general non-destructive approach to remote bending of organic crystals. Flexible organic crystals are coupled to magnetic nanoparticles to prepare hybrid actuating elements whose shape can be arbitrarily and precisely controlled simply by using magnetic field. The crystals are mechanically and chemically robust, and can be flexed precisely to a predetermined curvature with complete retention of their macroscopic integrity at least several thousand times in contactless mode, in air or in a liquid medium. These crystals are used as optical waveguides whose light output can be precisely and remotely controlled by using a permanent magnet. This approach expands the range of applications of flexible organic crystals beyond the known limitations with other methods for control of their shape, and opens prospects for their direct implementation in flexible devices such as sensors, emitters, and other (opto)electronics.

Elastic organic crystals are the materials foundation of future lightweight flexible electronic, optical and sensing devices, yet precise control over their deformation has not been accomplished. Here, the authors demonstrate rapid remote bending of organic crystals which are coupled to magnetic nanoparticles using magnetic field.