Classical and semiclassical studies of nonlinear nano-optomechanical oscillators Philippe Djorwé, Jimmi Hervé Talla Mbé, Serge G. Nana Engo and Paul Woafo Eur. Phys. J. D, 67 2 (2013) 45 Published online: 07 March 2013 DOI: 10.1140/epjd/e2013-30581-0