Photopolymer Materials for Soft Robotics: Actuation, Compliance, Fatigue and Multi-Material Constraints in VPP
Segurola, Juan
2026-09-17 · Informe · Versión 1.2
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VPP enables monolithic soft components, complex pneumatic channels and stimuli-responsive architectures, but the relevant material requirements are device-specific. Pneumatic actuators require compliance, tear resistance and low leakage; thermoresponsive or hydrogel actuators additionally require transport kinetics and dimensional stability; self-sensing devices require electrical-mechanical integration; and multi-material robots require durable interfaces between dissimilar networks. Recent DLP research has demonstrated soft pneumatic actuators, local shape-memory and stiffness control, self-sensing thermoresponsive actuators and gecko-inspired anisotropic soft structures [1–5]. This review develops a materials qualification framework based on actuation mode, compliance, fatigue, permeability, hysteresis and interface durability. It separates coupon properties from device outputs and rejects universal bending-angle/pressure maps. Silicone-like 3Dresyn Soft SR grades, NextGen SEA10 and 4Dresyn ETR35 Bio are included as commercial implementation examples without inferring actuator performance from product positioning.