Recently, Feng et al. claimed that "they have found the asymptotic self-similar parabolic solutions in gain medium of the normal GVD", where the evolution of op
Using MEMS technology and transmission electron microscopy we show experimentally multiwalled carbon nan-otubes with a mean fracture strength of larger than 100
Adaptive optics can be used to compensate for the wave aberration of the human eyes to achieve high-resolution imaging in real time.However the correction is pa