Delay of ice formation on penguin feathers Elaheh Alizadeh-Birjandi, Faryar Tavakoli-Dastjerdi, Judy St. Leger, Kym F. Faull, Stephen H. Davis, Jonathan P. Rothstein and H. Pirouz Kavehpour Eur. Phys. J. Special Topics, 229 10 (2020) 1881-1896 Published online: 14 September 2020 DOI: 10.1140/epjst/e2020-900273-x