Gerardo A López-Muñoz*, José A Pescador-Rojas, Jaime Ortega-Lopez, Jaime S Salazar and J A Balderas-López
* Corresponding author: Gerardo A López-Muñoz gerardolm85@gmail.com
Nanoscale Research Letters 2012, 7:423 doi:10.1186/1556-276X-7-423