Results 101 to 110 of about 3,898 (276)

Toward Programmed Complex Stress-Induced Mechanical Deformations of Liquid Crystal Elastomers

Crystals, 2020
We prepare a liquid crystal elastomer (LCE) with a spatially patterned liquid crystal director field from an all-acrylate LCE. Mechanical deformations of this material lead to a complex and spatially varying deformation with localised body rotations ...
Devesh Mistry, Helen F. Gleeson
doaj   +1 more source

Low-voltage-driven electromechanical effects of swollen liquid-crystal elastomers [PDF]

, 2005
We experimentally investigate, in detail, electromechanical effects in liquid-crystal elastomers (LCEs) previously swollen with low-molecular-weight liquid crystals (LMWLCs). Both polydomain (POLY) and monodomain (MONO) LCEs were studied.
Brand, Helmut R., Huh, Jong-Hoon, Brand, Helmut R, Cladis, Patricia E., Yusuf, Yusril, Finkelmann, Heino, Kai, Shoichi, Cladis, P.E.   +7 more
core   +1 more source

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source

Adhesion of Smectic Liquid Crystal Elastomers

Dynamic oscillatory shear data from smectic-A aligned liquid crystal elastomers in order to determine the ...
Gleeson, Helen F., Street, Aidan, Mattsson, Johan, Berrow, Stuart R.   +3 more
core   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

Advanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz, Gökhan Ince, Ozgur Atalay   +2 more
wiley   +1 more source

Material Selection and Geometric Design for Few‐filament Shape Memory Polymer Yarns for Force Generation

Advanced Materials Technologies, EarlyView.
A custom shape memory polymer material selection process relates quantitative application criteria (e.g., compression garment yarns) to material characterization information. The selected materials are manufactured into yarn geometries, which expand the design space by creating structural stress‐strain profiles beyond the nominal material stress‐strain
Michaela Andrews, Susan Mantell, Julianna Abel   +2 more
wiley   +1 more source

Continuum mechanics of line defects in liquid crystals and liquid crystal elastomers

Quarterly of Applied Mathematics, 2013
This paper generalizes the Ericksen-Leslie continuum model of liquid crystals to allow for dynamically evolving line defect distributions. In analogy with recent mesoscale models of dislocations, we introduce fields that represent defects in orientational and positional order through the incompatibility of the director and deformation ‘gradient’ fields.
Acharya, Amit, Dayal, Kaushik
openaire   +1 more source

Dynamic Current Routing in Conductive Liquid Crystal Elastomers for Complex Deformation Actuators

Advanced Materials Technologies, EarlyView.
This work introduces a novel actuation control strategy in which electrical stimulation generates localized Joule heating in conductive liquid crystal elastomer (LCE) surfaces, enabling complex 3D deformations from a single homogeneous surface without preprogramming.
Gloria PouWai Lei, Morgan Barnes, Thomas George Thuruthel   +2 more
wiley   +1 more source

Compression induced stiffening and alignment of liquid crystal elastomers

, 2016
In some embodiments, the present disclosure provides methods of strengthening liquid crystal elastomers. In some embodiments, such methods include a step of placing the liquid crystal elastomer in an environment that applies dynamic stress to the liquid ...
Agrawal, Aditya, Verduzco, Rafael, Chipara, Alin Cristian   +2 more
core  

Adaptable liquid crystal elastomers with transesterification-based bond exchange reactions

, 2018
Adaptable liquid crystal elastomers (LCEs) have recently emerged to provide a new and robust method to program monodomain LCE samples.
Drew W. Hanzon, Christopher M. Yakacki, Matthew K. McBride, Christopher N. Bowman, Nicholas A. Traugutt, Kai Yu   +5 more
core   +1 more source