Fast low-voltage electroactive actuators using nanostructured polymer electrolytes

被引:187
作者
Kim, Onnuri [1 ]
Shin, Tae Joo [2 ]
Park, Moon Jeong [1 ,3 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Div Adv Mat Sci WCU, Pohang 790784, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Pohang Accelerator Lab PAL, Pohang 790784, South Korea
[3] Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 790784, South Korea
基金
新加坡国家研究基金会;
关键词
WALLED CARBON NANOTUBES; FULLY PLASTIC ACTUATOR; IONIC-LIQUID; PERFORMANCE; BEHAVIOR; IONOMERS; NAFION; CONDUCTIVITY; MECHANISMS; ELASTOMERS;
D O I
10.1038/ncomms3208
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Electroactive actuators have received enormous interest for a variety of biomimetic technologies ranging from robotics and microsensors to artificial muscles. Major challenges towards practically viable actuators are the achievement of large electromechanical deformation, fast switching response, low operating voltage and durable operation. Here we report a new electroactive actuator composed of self-assembled sulphonated block copolymers and ionic liquids. The new actuator demonstrated improvements in actuation properties over other polymer actuators reported earlier, large generated strain (up to 4%) without any signs of back relaxation. In particular, the millimetre-scale displacements obtained for the actuators, with rapid response (<1 s) at sub-1-V conditions over 13,500 cycles in air, have not been previously reported in the literature. The key to success stems from the evolution of the unique hexagonal structure of the polymer layer with domain size gradients beneath the cathode during actuation, which promotes the bending motion of the actuators.
引用
收藏
页数:9
相关论文
共 52 条
[1]   Characterization and modeling of extensional and bending actuation in ionomeric polymer transducers [J].
Akle, Barbar J. ;
Leo, Donald J. .
SMART MATERIALS & STRUCTURES, 2007, 16 (04) :1348-1360
[2]  
Armand M, 2009, NAT MATER, V8, P621, DOI [10.1038/NMAT2448, 10.1038/nmat2448]
[3]   Increasing the maximum strain and efficiency of bucky gel actuators by pyrrole oxidative polymerization on carbon nanotubes dispersed in an ionic liquid [J].
Biso, Maurizio ;
Ansaldo, Alberto ;
Picardo, Elisa ;
Ricci, Davide .
CARBON, 2012, 50 (12) :4506-4511
[4]  
Carpi F., 2009, Biomedical Applications of Electroactive Polymer Actuators
[5]   Ionic Polymer Metal Composites as energy harvesters [J].
Dogruer, Deniz ;
Tiwari, Rashi ;
Kim, Kwang .
ELECTROACTIVE POLYMER ACTUATORS AND DEVICES (EAPAD) 2007, 2007, 6524
[6]   Beyond Nafion: Charged Macromolecules Tailored for Performance as Ionic Polymer Transducers [J].
Duncan, Andrew J. ;
Leo, Donald J. ;
Long, Timothy E. .
MACROMOLECULES, 2008, 41 (21) :7765-7775
[7]   Sulfonation and characterization of poly (styrene-isobutylene-styrene) triblock copolymers at high ion-exchange capacities [J].
Elabd, YA ;
Napadensky, E .
POLYMER, 2004, 45 (09) :3037-3043
[8]   A 4 V Operation, Flexible Braille Display Using Organic Transistors, Carbon Nanotube Actuators, and Organic Static Random-Access Memory [J].
Fukuda, Kenjiro ;
Sekitani, Tsuyoshi ;
Zschieschang, Ute ;
Klauk, Hagen ;
Kuribara, Kazunori ;
Yokota, Tomoyuki ;
Sugino, Takushi ;
Asaka, Kinji ;
Ikeda, Masaaki ;
Kuwabara, Hirokazu ;
Yamamoto, Tatsuya ;
Takimiya, Kazuo ;
Fukushima, Takanori ;
Aida, Takuzo ;
Takamiya, Makoto ;
Sakurai, Takayasu ;
Someya, Takao .
ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (21) :4019-4027
[9]   Fully plastic actuator through layer-by-layer casting with ionic-liquid-based bucky gel [J].
Fukushima, T ;
Asaka, K ;
Kosaka, A ;
Aida, T .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (16) :2410-2413
[10]   Imidazolium sulfonate-containing pentablock copolymer-ionic liquid membranes for electroactive actuators [J].
Gao, Renlong ;
Wang, Dong ;
Heflin, James R. ;
Long, Timothy E. .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (27) :13473-13476