Growth and characterization of catalyst-free gallium arsenide nanorods on silicon substrates via molecular beam epitaxy - Misa, John V.; Balgos, Ma. Herminia M.; Jaculbia, Rafael B.; Porquez, Jeremy G.; Defensor, Michael J.; Somintac, Armando S.; Salvador, Arnel A. (Proceedings of the Samahang Pisika ng Pilipinas, 2009)