Bilayer initial configurations at various area per lipid (50-70 Å 2 ) are created using the packmol program. The membrane consists of 400 lipids in each leaflet and a total of 800 lipids. The simulations are run at different temperatures 293K, 304K, and 324K. Intially, the system is equilibrated at constant pressure of 23.7 with a 100000 steps long simulation at Δ𝑡 = 0.01𝜏, which is followed by an NVT simulation of 1 million steps. Analysis is performed over the last 500000 steps. The bilayers are characterized with variation of surface tension as a function of area per lipid at different temperatures.