Kim, Bori Park, Youn Duk Min, Kyoungho Lee, Jin Hong Hwang, Seung Sang Hong, Soon Man Kim, Bong Hoon Kim, Sang Ouk Koo, Chong Min 2024-01-20T16:30:28Z 2024-01-20T16:30:28Z 2021-09-04 2011-09-09 1616-301X https://pubs.kist.re.kr/handle/201004/129990 Electrostriction facilitates the electric field-stimulated mechanical actuation of dielectric materials. This work demonstrates that introduction of dielectric mismatched nanodomains to a dielectric elastomer results in an unexpected ultralarge electrostriction coefficient, enabling a large electromechanical strain response at a low electric field. This strong electrostrictive effect is attributed to the development of an inhomogeneous electric field across the film thickness due to the high density of interfaces between dielectric mismatched periodic nanoscale domains. The periodic nanostructure of the nanostructured gel also makes it possible to measure the true electromechanical strain from the dimensional change monitored via in situ synchrotron small angle X-ray scattering. The work offers a promising pathway to design novel high performance dielectric elastomers as well as to understand the underlying operational mechanism of nanostructured multiphase electrostrictive systems. English WILEY-BLACKWELL HIGH-DIELECTRIC-CONSTANT ANGLE NEUTRON-SCATTERING FIELD-INDUCED STRAIN ELECTROMECHANICAL RESPONSE POLYURETHANE ELASTOMER COPOLYMER COMPOSITES POLYMERS BEHAVIOR FILMS Electric Actuation of Nanostructured Thermoplastic Elastomer Gels with Ultralarge Electrostriction Coefficients Article 10.1002/adfm.201100298 1 ADVANCED FUNCTIONAL MATERIALS, v.21, no.17, pp.3242 - 3249 ADVANCED FUNCTIONAL MATERIALS 21 17 3242 3249 scie scopus 000295184400005 2-s2.0-80052406386 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article HIGH-DIELECTRIC-CONSTANT ANGLE NEUTRON-SCATTERING FIELD-INDUCED STRAIN ELECTROMECHANICAL RESPONSE POLYURETHANE ELASTOMER COPOLYMER COMPOSITES POLYMERS BEHAVIOR FILMS actuators block copolymers dielectrics electrostriction thermoplastic elastomer gels