To obtain superhydrophobic surface, aluminum oxide was deposited onto wool fabrics using atomic layer deposition (ALD) by exposing them to alternating pulses of trimethylaluminum and water at 80 degrees C. Scanning electron microscope (SEM) and X-ray fluorescence (XRF) analysis showed that Al2O3 layer and uniform Al2O3 nanoparticle were formed around the surface of ALD coated wool fiber, which showed higher surface roughness than control wool fiber. The static water contact angles of ALD coated wool fabrics increased from 130 degrees to around 160 degrees, and had a higher durability than that of control wool fabric. The dynamic water contact angles of all samples were also tested. Furthermore, the common household liquids also existed as ball-like droplet on the ALD coated wool fabrics and as stain spot on the control wool fabrics after exposure for 1800 s. (C) 2015 Elsevier B.V. All rights reserved.