Theoretical model of the transition between C1 and C2 chevron structures in smectic liquid crystals A. Diaz, N. J. Mottram and G. McKay Eur. Phys. J. E, 18 2 (2005) 231-237 Published online: 20 October 2005 DOI: 10.1140/epje/i2005-10041-7