Saragih, H., Yustian , W., Lingga , A.E., Simanjuntak , A.O., Marcia, B.D., Manalu, D.R., Oumaro , G.B., Leo, J.G., Kusminarti , K., Silalahi, L.D., La’lang , M.A., Nurbayanti , R.S., Leo , R.Y., Situmorang , S. and Siahaan , W.A. 2026. Concentration and Urbach Energy of ZnO Nanoparticles Synthesized Using Tween 80 Encapsulant. Journal of Pharmaceutical and Sciences. 9, 2 (May 2026), 1246–1253. DOI:https://doi.org/10.36490/journal-jps.com.v9i2.1527.