C - D bond order parameters for different segments in the amphiphile chain. Carbon number 2 is the CHj , where 0 is the angle between the C - D bond vector and the bilayer normal. , experimental order parameters down the de-canoate chain in a 32 wt sodium decanoate, 38 wt deca-nol, 30 wt water lamellar phase.-----, from the molecular dynamics simulation.-------, from our single chain