Bubble electrospinning with aqueous solvent is used to fabricate nanofibers within 100 nm. The effect of applied voltage on the diameters of nanofibers is experimentally studied, revealing that the higher voltage favors the smaller diameter. Polyvinyl Alcohol (PVA) with water as solvent is used to produce environmentally benign nanofibers, and the minimal diameter reaches as small as 46.8 nm. (C) 2009 Elsevier Ltd. All rights reserved.