ZnO nanowire-coated hydrophobic surfaces for various biomedical applications

Recently, hydrophobic surfaces are finding many applications in the field of biomedical. This study reports the simple and facile method of hydrophobization of various surfaces like glass, semiconductor and polymer, etc. used in biomedical field by using durable and water-resistant ZnO nanowires coating. The change in contact angle of ethylenediaminetetraacetic acid (EDTA) anticoagulated whole blood (EDTA-WB) on various substrates like; glass, quartz, Si and polydimethylsiloxane (PDMS) before and after ZnO nanowires coating is reported. It was observed that the different type of substrates show great variation in contact angle of EDTA-WB, before and after ZnO nanowires coating. The substrates which are generally hydrophilic for EDTA-WB become hydrophobic after ZnO nanowires coating. This surface-coating technique can be utilized in various biomedical applications, for example, in medical devices and surgical equipments coating, orthopaedic dressings, in-vivo implants and corrosion-resistance surfaces.