Affiliation: | 1. NNL, National Nanotechnology Laboratory of CNR‐INFM, Distretto Tecnologico ISUFI, Dipartimento di Ingegneria dell'Innovazione, Università del Salento, Via Arnesano Km 5, I‐73100 Lecce (Italy);2. Present address: Advanced Technology Institute, Nano‐Electronics Centre, University of Surrey, Guildford GU2 7XH, UK |