Wet-spinning of magneto-responsivehelical chitosan microfibers
Dorothea Brüggemann , Johanna Michel, Naiana Suter, Matheus Grande de Aguiar, Michael Maas Beilstein J. Nanotechnology (2020) 11 , 991–999. doi:10.3762/bjnano.11.83 Helical structures can be found in nature