Ahmed ZA, Ubaid QH, Al-Kaabi MA. Investigation The Non Linear optical Properties and Spectroscopy Properties of Polyimide Using DFT. J Neonatal Surg [Internet]. 2025 May 6 [cited 2026 Apr. 1];14(21S):128-35. Available from: https://jneonatalsurg.com/index.php/jns/article/view/5235