| 초록 |
Bent-core liquid crystals (LCs) have attracted interests due to their unique optical/ electrical properties promising applications. [1] Among them, achiral bent-core LCs were reported accompanying not only ferroelectric switching behavior but polar and chiral properties with uniform helical nanofilament (HNF) structure. [2] Spontaneous chirality-preserving nucleation and growth of HNF have been studied in bulk states, but the chiral and dimensional characteristics could not be handled. [3] Here, we introduce the nano-confinement system for geometric controls on complex HNF structure. In the confinement system composed of nanochannel, we can control not only the geometrical properties but chirality of helical structure. Electron microscopy analysis confirms the functionality of this system in large-scale devices. [1] N. A. Clark et al., Appl. Phys. Lett., 36, 899 (1980) [2] L. E. Hough et al., Science, 325, 456 (2009) [3] D. Chen et al., J. Am.Chem. Soc., 133, 12656 (2011) |
