In the early stages of nanotechnology development and diffusion, many expected benefits have not yet been fully accomplished but researchers of many countries in the science fields aggressively involved the relevant research to boost nanotech competitiveness through academic research, and corporations directed their R&D activities towards the exploration of nanotech opportunities. The paper compares science fields' diversification into nanotechnology related research in a global perspective. The main objective is to understand to what extent nanotech research fused with basic scientific research. The research is based on Quantitative method, combining bibliometrics and tech mining, using SCI-EXPANDED database in a 5-years time frame (2000-2004), based on 163 specialist nano^* keywords or fullerene. The research offers useful insights for science & technology policy makers and researchers for traditional science fields in a global Community, revealing fusion of the emerging nanotechnological research, existing country-level competencies and differences between traditional disciplines.