Surface roughness and fractal dimension characterization of the topography in pristine and defected nanostructure arrays - Baliber, Lourenz O.; Flores, Cindy L.; Madriaga, Marvie Rose A.; Rios, Wilfred V.; Bacabac, Rommel G. (Proceedings of the 43rd Samahang Pisika ng Pilipinas Physics Conference, 2025)