Dear all, I am currently working on a project that aims to develop bioactive glass-based porous coatings/surfaces for bone tissue engineering. The thickness of the coating is in the range of 100-500 nanometers. The major problem I encountered is that my coatings disappear few hours after putting them in deionized water. However when making the same nano-featured coatings using silica only the coby Hoditta - Tissue Engineering