What you have to do is you have to really clean the glass substrate very thoroughly whenever you do this kind because these kind of it is precisely a process of absorption depositing essentially means you are absorbing on the surface you are not doing any chemical coupling of the Poly D Lysine molecule on the substrate.
તમે પોલી D લાઈસિન પરમાણુનું સબસ્ટ્રેટ પર કોઈ કેમિકલ  જોડાણ કરી રહ્યા નથી.