coating said substrate with a solution formed from {TAIL ~ a soluble source} of silicon oxide, water, a solvent, a nonionic surfactant, {HEAD ~ an ionic additive}, and an acid catalyst; and 
coating said substrate with a solution formed from { TAIL ~ a soluble source } of silicon oxide , water , a solvent , a nonionic surfactant , { HEAD ~ an ionic additive } , and an acid catalyst ; and
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH