عنوان مقاله [English]
The present researchexamines international co-authorship network of Iranian Nanotechnology researchers. A number of factors are considerd includingthe co-authorship frequencies with countries, continents, the first year of co-authorship with co-authors’ countries, the primary focus of collaborations between countries, the betweenness centrality indicator. Furthermore, we examined the evolutionof co-authors’ countries network, the authoring burst of co-authors’ countries, sigma & burst terms indicators using Citespace (program for visualizing patterns and trends in scientific literature) by 4605 documents extracted through Science Citation Index (SCI) via the Web of Science databases advanced search between 1991 and 2011. The query was conducted using Nanotechnology tree terms, identified by Inspec and Compendex thesaurus. The results showed that the Iranian nanotechnology researchers collaborated with 44 countries (except Iran) and had the most co-author documents with Europe and Canada. The highest Iranian scientific collaborations among neighboring countries, respectively, was with Azarbaijan, Russia, Pakistan , Turkey and United Arabic Emirates and Oman. Iran has does not the scientific collaboration with other neighboring countries. New Zealand and Mexico are countries that Iranian nanotechnology researchers had co-authors for the first time in 2011. Preparation is likely to be the primary focus of collaborations between Iranian researchers with 27 countries. Since Canada was prolific country in terms of collaboration and had the highest betweenness centrality, therefore this country has been the dominant influence on Iranian nanotechnology researchers. Iran's first connections with Non-concordant countries with Iranian Nanotechnology researchers studies orientation has happened in third five-year period. Countries with similar studies orientation to Iran were the most active Co-authors’ Countries with Iranian Nanotechnology researchers by 2004. Japan with sigma amount equal to 1.16 is allocated to the highest rank to represent novel ideas. "wall-carbon-nanotubes", "density-functional", "fe-2-o" and "single-wall-carbon-nanotubes" respectively were the most prolific term used in the Iranian nanotechnology scientific productions.