1. Enhancing Optical Forces on Fluorescent Up‐Converting Nanoparticles by Surface Charge Tailoring. Issue 13 (1st December 2014) Authors: Rodríguez‐Rodríguez, Héctor; Rodríguez Sevilla, Paloma; Martín Rodríguez, Emma; Ortgies, Dirk H.; Pedroni, Marco; Speghini, Adolfo; Bettinelli, Marco; Jaque, Daniel; Haro‐González, Patricia Journal: Small Issue: Volume 11:Issue 13(2015) Page Start: 1555 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗