Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Size-Selected Ag Nanoparticles with Five-Fold Symmetry | Nanoscale Res Lett 2009 4 896-902 DOI S11671-009-9328-4 NANO EXPRESS Size-Selected Ag Nanoparticles with Five-Fold Symmetry Miguel Angel Gracia-Pinilla Domingo Ferrer Sergio Mejia-Rosales Eduardo Perez-Tijerina Received 11 February 2009 Accepted 24 April 2009 Published online 15 May 2009 to the authors 2009 Abstract Silver nanoparticles were synthesized using the inert gas aggregation technique. We found the optimal experimental conditions to synthesize nanoparticles at different sizes and nm. We were able to investigate the dependence of the size of the nanoparticles on the synthesis parameters. Our data suggest that the aggregation of clusters dimers trimer etc. into the active zone of the nanocluster source is the predominant physical mechanism for the formation of the nanoparticles. Our experiments were carried out in conditions that kept the density of nanoparticles low and the formation of larges nanoparticles by coalescence processes was avoided. In order to preserve the structural and morphological properties the impact energy of the clusters landing into the substrate was M. A. Gracia-Pinilla S. Mejia-Rosales E. Perez-Tijerina El Laboratorio de Nanociencias y Nanotecnologia Facultad de Ciencias Fisico Matematicas-FCFM Centro de Innovation Investigation y Desarrollo en Ingenieria y Tecnología CIIDIT Universidad Autonoma de Nuevo León Monterrey Nuevo Leon 66450 Mexico e-mail URL ifi M. Ai . Gracia-Pinilla e-mail S. Mejia-Rosales e-mail smejia@ D. Ferrer The Microelectronics Research Center at The University of Texas at Austin MRC Austin TX 78758 USA e-mail domingo@ E. Peirez-Tijerina Centro de Investigation en Materiales Avanzados CIMAV Unidad Monterrey Parque de Investigation e Innovation Tecnologica PIIT Monterrey Nuevo Leon 66600 Mexico controlled such that the acceleration energy of .