Nirton CS Vieira*, Waldir Avansi, Alessandra Figueiredo, Caue Ribeiro, Valmor R Mastelaro and Francisco EG Guimarães
* Corresponding author: Nirton CS Vieira nirton@ursa.ifsc.usp.br
Nanoscale Research Letters 2012, 7:310 doi:10.1186/1556-276X-7-310