This surface roughness was not enough to hold air pockets amidst and as a result water drop contacts maximum
solid fraction of the coating. This surface morphology promotes the water drop to follow Wenzel's
wetting state with high adhesion towards surface. A water drop placed on RB-2 coatings showed
contact angle of 137 7 31 and roll-off at sliding angle of 25 7 21. Even though, the density of imbedded RB silica
particles in the silica matrix was increased, it assisted the water contact angle increase in minor extent.