Akademska digitalna zbirka SLovenije - logo
E-viri
Celotno besedilo
Recenzirano Odprti dostop
  • Electric Field‐Driven Diele...
    Xu, Ciqun; Faul, Charl F. J.; Taghavi, Majid; Rossiter, Jonathan

    Advanced functional materials, 03/2023, Letnik: 33, Številka: 13
    Journal Article

    Dielectrophoresis is the electro‐mechanical phenomenon where a force is generated on a dielectric material when exposed to a non‐uniform electric field. It has potential to be exploited in smart materials for robotic manipulation and locomotion, but to date it has been sparsely studied in this area. Herein, a new type of dielectrophoretic actuator exploiting a novel electroactive polymer is described, termed as dielectrophoretic elastomer (DPE), which undergoes electric field‐driven actuation through dielectrophoresis. Unique deflection and morphing behavior of the elastomer induced by controlling the dielectrophoretic phenomenon, such as out‐of‐plane deformation and independence of electric field polarity, are illustrated. The dielectric and mechanical properties of the DPE are studied to gain insight into the influence of materials composition on deformation. Actuation performance using different electrode parameters is experimentally investigated with supplementary analysis through finite element simulation, revealing the relationship between electric field inhomogeneity and deflection. The applications of DPE actuators in a range of robotic devices is demonstrated, including a pump, an adjustable optical lens, and a walking robot. This diverse range of applications illustrates the wide potential of these new soft‐and‐smart electric field‐driven materials for use in soft robotics and soft compliant devices. A new class of electroactive material is introduced, termed as dielectrophoretic elastomer, which is the first‐ever demonstrated active morphing and moving matter that is driven by inhomogeneities in the electric field. Its potential for applications in pumps, optical lenses, and walking robots, providing new solutions for the design of soft and compliant devices, is explored.