Inspired by water-repellent behavior of micro and nanostructured plants and insects surfaces, the
hydrophobic property of well-ordered, peroidic, vertically alignedmolybdenum (Mo) nanorods coated
with Teflon has been studied experimentally. In order to investigate the effect of nanorods separation
and surface roughness on water contact angle (WCA), Mo nanorods were sputter deposited
on various topograpies including flat silicon (Si) substrate, single layer hexagonal closely packed
Polystyrene (PS) nanospheres deposited on Si wafers, and periodic silver nanoseeds fabricated on
Si substrate by glancing angle deposition (GLAD) technique. The PS nanospheres were deposited
on Si wafers utilizing modified nanospheres lithography (m-NSL) technique. A combination of m-
NSL and thermal evaporation techniques was used to fabricate the periodic silver nanoseeds on
the Si substrates. GLAD Mo nanorods growth was followed by normal incidence Teflon sputter
deposition to introduce a hydrophobic layer. An increase in the contact angle was observed with
increasing the nanorods separation and enhancing the surface roughness, which is attributed to the
decreased area fraction of solid-liquid interface.