Dr. David R. Barbero has been involved in nano-patterning and nano-structuring of polymers and composites for more than 10 years. The methods he uses are optical lithography, nano-imprinting, and colloidal and polymer self-assembly. David R. Barbero obtained his PhD in Physics at the Cavendish Laboratory, University of Cambridge, UK, where he was a Marie-Curie Fellow, a European Cambridge Trust Scholar, and he was awarded the Abdus Salam runner-up prize in Physics from Cambridge University in 2009. He is currently group leader of the Nano-Engineered Materials and Organic Electronics Group and assistant Professor in Physics at Umeå University, Sweden. His research interest are in the development of more efficient and less expensive photovoltaic and optoelectronic devices using mainly organic and nanostructured-carbon based materials. Our recent work on carbon nanotube composite nano-networks has appeared in 2014 on the covers of the scientific journals Advanced Materials and Nanoscale. In addition, this work has been highlighted in over 80 scientific newspapers and internet websites.