Chirality-induced helical self-propulsion of chiral liquid crystal - PowerPoint PPT Presentation

Chirality-induced helical self-propulsion of chiral liquid crystal droplets Takaki Yamamoto & Masaki Sano Department of Physics, the University of Tokyo

2 Non-equilibrium dynamics in chiral system Molecular motor Volvox Condensed maTer Chiral liquid crystal Skyrmion G TY, et al. EPL (2015). M. Mochizuki, Nature Materials, K. Drescher, et al., PRL. , 102 , 168101 (2009). 13 , 241 (2014). Chiral system → rotaVonal moVon Today’s topic: Chirality in acVve maTer

3 Chiral acVve maTer: Biological swimmer 2D rotaVon 3D helical moVon h 10 µ m Volvox Sperm of sea urchin K. Drescher, et al., P RL. , 102 , 168101 (2009). J. F. jikeli, et al., Nat. Commun. , 6 , 7985 (2015).

4 Chiral acVve maTer: ArVficial swimmer 2D rotaVon 3D helical moVon L+ 5 µ m No experiment… Our work 3D chiral arVficial swimmer Au coating 2D ArVficial chiral swimmer Experiment & Theory F. Kümmel, et al., PRL, 110, 198302 (2013).

5 Marangoni flow as a self-propulsion force Tears of wine High EvapolaVon of interfacial tension Low concentraVon Alcohol High concentraVon Gradient of interfacial tension → force and flow