Pulsed laser ablation produced copper nanoparticles (CUO NPS): the influence of time by Adnan, Nurul Nadia, Ab. Razak, Siti Noraiza, Roslan, Muhammad Sufi, Mohd. Taib, Nur Athirah, Nurhafizah, Hasim, Amran, Nurmawaddah Balqish