and any other method of depositing the uncured coating on a substrate similarly although the examples describe the use of glass any suitable substrate may be used in certain embodiments of the present invention example nos 1 to 5 relate to the use of polyoxyethylene 20 sorbitan monooleate psm to improve wetting properties of the coatings in this example 0 5 wt water based titania dispersion commercially available from tioxoclean inc was used to coat on the glass substrate by flow coating method the coating was cured at 250 u00b0 c for 10 minutes then heat treated at 500 u00b0 c for 3 5 minutes due to the poor wettability the coating did not spread well on the glass substrate the surface tension of this dispersion is very high which leads to high cohesion force of the water to the titania particles the wettability was measured on the scale of 1 to 5 and shown in the table 1 on scale 1 refers to the best wetting properties of coating and 5 refers to the poorest wettability of the coating the wetting scale of the coating using only this dispersion is 5 as shown in the table 1 in determining wettability the following steps were used spread the liquid coating on substrate place the coated substrate on a flat surface for 1 minute and determine if the whole surface of area of the substrate is coated by liquid a number from 1 to 5 is designated to reflect how much of the surface is wet e g how much of the surface is not wetted in this example 0 5 wt water based titania dispersion commercially available from.