Giant flexoelectricity in bent-core nematic liquid crystal elastomers

作者: J. Harden , M. Chambers , R. Verduzco , P. Luchette , J. T. Gleeson

DOI: 10.1063/1.3358391

关键词:

摘要: Recently ferroelectric ceramic and bent-core nematic liquid crystals have demonstrated flexoelectricity (coupling between curvature strains to electric polarization) up 104 times larger than the previous standards. This may allow for usable electromechanical devices. However, ceramics are too rigid withstand large bending fluids must be physically supported—their technological applicability is still limited. In this paper, we show that novel side-chain elastomers not only produce giant but also robust flexible enough microscale parasitic power generation.

参考文章(22)
Wenhui Ma, L. Eric Cross, Observation of the flexoelectric effect in relaxor Pb(Mg1/3Nb2/3)O3 ceramics Applied Physics Letters. ,vol. 78, pp. 2920- 2921 ,(2001) , 10.1063/1.1356444
Oriano Francescangeli, Vesna Stanic, Sofia I. Torgova, Alfredo Strigazzi, Nicola Scaramuzza, Claudio Ferrero, Igor P. Dolbnya, Thomas M. Weiss, Roberto Berardi, Luca Muccioli, Silvia Orlandi, Claudio Zannoni, Ferroelectric Response and Induced Biaxiality in the Nematic Phase of Bent-Core Mesogens Advanced Functional Materials. ,vol. 19, pp. 2592- 2600 ,(2009) , 10.1002/ADFM.200801865
Robert B. Meyer, Piezoelectric Effects in Liquid Crystals Physical Review Letters. ,vol. 22, pp. 918- 921 ,(1969) , 10.1103/PHYSREVLETT.22.918
Wenhui Ma, Flexoelectricity: strain gradient effects in ferroelectrics Physica Scripta. ,vol. 2007, pp. 180- 183 ,(2007) , 10.1088/0031-8949/2007/T129/041
John Y. Fu, L. Eric Cross, Separate control of direct and converse piezoelectric effects in flexoelectric piezoelectric composites Applied Physics Letters. ,vol. 91, pp. 162903- ,(2007) , 10.1063/1.2790476
C. Bailey, K. Fodor-Csorba, R. Verduzco, J. T. Gleeson, S. Sprunt, A. Jákli, Large Flow Birefringence of Nematogenic Bent-Core Liquid Crystals Physical Review Letters. ,vol. 103, pp. 237803- ,(2009) , 10.1103/PHYSREVLETT.103.237803
Valentina Domenici, Tomaz Apih, Carlo Alberto Veracini, Molecular motions of banana-shaped Liquid Crystals studied by NMR spectroscopy Thin Solid Films. ,vol. 517, pp. 1402- 1406 ,(2008) , 10.1016/J.TSF.2008.09.035
D. Wiant, S. Stojadinovic, K. Neupane, S. Sharma, K. Fodor-Csorba, A. Jákli, J. T. Gleeson, S. Sprunt, Critical behavior at the isotropic-to-nematic phase transition in a bent-core liquid crystal. Physical Review E. ,vol. 73, pp. 030703- 030703 ,(2006) , 10.1103/PHYSREVE.73.030703
A. Jákli, M. Chambers, J. Harden, M. Madhabi, R. Teeling, J. Kim, Q. Li, G. G. Nair, N. Éber, K. Fodor-Csorba, J. T. Gleeson, S. Sprunt, Extraordinary properties of nematic phases of bent-core liquid crystals Proceedings of SPIE, the International Society for Optical Engineering. ,vol. 6911, pp. 691105- ,(2008) , 10.1117/12.768866
M. Chambers, R. Verduzco, J. T. Gleeson, S. Sprunt, A. Jákli, Flexoelectricity of a calamitic liquid crystal elastomer swollen with a bent-core liquid crystal Journal of Materials Chemistry. ,vol. 19, pp. 7909- 7913 ,(2009) , 10.1039/B911652D