Active Surfaces Formed in Liquid Crystal Polymer Networks

Abstract

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Self-regulating electrical rhythms with liquid crystal oligomer networks in hybrid circuitry

“…17 Yet, the anisotropic properties of LCs also translate into readily functionalized particles and highly tuneable mechanical and stimuli-responsive actuation in liquid crystal networks (LCNs). [18][19][20][21][22][23][24] The emerging functions of LCNs are especially applicable in biomimicking soft robotics because the compliant nature and stimuli-responsive actuation of the material allows for robotic functions in restrictive environments. 25 Therefore, researchers have replicated natural systems with LCNs, such as artificial muscles or swimmers.…”

Impact of Molecular-level Structural Disruption on Relaxation Dynamics of Polymers with End-on and Side-on Liquid Crystal Moieties

“…The synergy of properties exhibited by SCLCPs makes them desirable for a variety of potential commercial applications, especially when they are slightly cross-linked 10 (in which case they are called liquid crystal elastomers (LCEs)) due to their reversible shape change and increased memory effects. 11 These applications include, among others, solar cells, 12 conductors, 13 3D-printed shape-changing materials with hierarchical structures and complex geometries, 14−16 and soft robotics components. 17−25 The classic mesophases formed by ordinary liquid crystals, such as nematic, smectic A, smectic B, etc., 26,27 are maintained in these hybrid molecules due to the flexibility of the polymers and the decoupling of the stiff LC moieties from the polymer backbones by sufficiently long spacers.…”

“…The synergy of properties exhibited by SCLCPs makes them desirable for a variety of potential commercial applications, especially when they are slightly cross-linked (in which case they are called liquid crystal elastomers (LCEs)) due to their reversible shape change and increased memory effects . These applications include, among others, solar cells, ionic conductors, 3D-printed shape-changing materials with hierarchical structures and complex geometries, − and soft robotics components. − …”

Photo-responsive liquid crystal network-based material with adaptive modulus for haptic application

“…They adapt upon an external stimulus that changes their properties and provide on-screen tactile feedback at the position of touch by localizing it with a high resolution (micrometers) in various perception forms, such as surfaces that change their topography 15 or switch between "dry" and ''wet'' 16 . Direct change of the material provides a real rather than simulated sensation of touch.In this work we study such dynamic coatings with adaptive modulus based on a liquid crystal network (LCN) 17,18 , which is a widely studied material for active surfaces 19 . It permits predefining, freezing and subsequent tuning the molecular order, which, in turn, influences the macroscopic properties of the material [20][21][22] .…”

“…In this work we study such dynamic coatings with adaptive modulus based on a liquid crystal network (LCN) 17,18 , which is a widely studied material for active surfaces 19 . It permits predefining, freezing and subsequent tuning the molecular order, which, in turn, influences the macroscopic properties of the material [20][21][22] .…”