This question is regarding hydrophobic material properties:

$1$ A$..$Do hydrophobic surfaces have smooth or rough surface? Why and give examples

Describe the surface chemistry $/$ design$($ shape $)$ of a superhydrophobic surface

How do we calculate, measure, observe it in a lab $?$

$($ is rough or smooth surface good for hydrophobicity$)$

So an ideal hydrophobic surfaces has what textures and how does if repel water or minimize water adhesion.$($ including micro, nano structure$)$

B$.$What is solid vapor, liquid vapor, solid liquid interfaces$/$interracial tensions

Use and need $,$ definition in hydrophobic surfaces

C$.$what are defn $/$ and use of Young eqn, contact angle measurement $,$ Wenzel model, cassie$-$ Baxter model $,$ roughness factor $,$ sliding angle in superhydrophobicity $/$ phillicity of materials$($ biomaterials$)$

D$.$Ideal superhydrophobic, superphillic surface texture, shape$/$design $,$ surface chemistry