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A Low-Voltage, High-Force Capacity Electroadhesive Clutch Based on Ionoelastomer Heterojunctions.
Levine, D J; Lee, O A; Campbell, G M; McBride, M K; Kim, H J; Turner, K T; Hayward, R C; Pikul, J H.
Afiliación
  • Levine DJ; Department of Mechanical Engineering & Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA.
  • Lee OA; Materials Science and Engineering, University of Colorado, Boulder, CO, 80303, USA.
  • Campbell GM; Department of Mechanical Engineering & Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA.
  • McBride MK; Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80303, USA.
  • Kim HJ; Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, South Korea.
  • Turner KT; Department of Mechanical Engineering & Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA.
  • Hayward RC; Materials Science and Engineering, University of Colorado, Boulder, CO, 80303, USA.
  • Pikul JH; Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80303, USA.
Adv Mater ; 35(46): e2304455, 2023 Nov.
Article en En | MEDLINE | ID: mdl-37734086
Electroadhesive devices with dielectric films can electrically program changes in stiffness and adhesion, but require hundreds of volts and are subject to failure by dielectric breakdown. Recent work on ionoelastomer heterojunctions has enabled reversible electroadhesion with low voltages, but these materials exhibit limited force capacities and high detachment forces. It is a grand challenge to engineer electroadhesives with large force capacities and programmable detachment at low voltages (<10 V). In this work, tough ionoelastomer/metal mesh composites with low surface energies are synthesized and surface roughness is controlled to realize sub-ten-volt clutches that are small, strong, and easily detachable. Models based on fracture and contact mechanics explain how clutch compliance and surface texture affect force capacity and contact area, which is validated over different geometries and voltages. These ionoelastomer clutches outperform the best existing electroadhesive clutches by fivefold in force capacity per unit area (102 N cm-2 ), with a 40-fold reduction in operating voltage (± 7.5 V). Finally, the ability of the ionoelastomer clutches to resist bending moments in a finger wearable and as a reversible adhesive in an adjustable phone mount is demonstrated.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania