1. International Iberian Nanotechnology Laboratory Av. Mestre José Veiga Braga 4715‐330 Portugal
2. QuantaLab Braga 4715‐330 Portugal
3. Mechanical Engineering Department and IDMEC Instituto Superior Técnico University of Lisbon Av. Rovisco Pais Lisboa 1049‐001 Portugal
4. Materials Science and Engineering Program The University of Texas at Austin Austin TX 78712 USA