tailieunhanh - Báo cáo hóa học: " Deposition of Size-Selected Cu Nanoparticles by Inert Gas Condensation"

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: Deposition of Size-Selected Cu Nanoparticles by Inert Gas Condensation | Nanoscale Res Lett 2010 5 180-188 DOI s11671-009-9462-z NANO EXPRESS Deposition of Size-Selected Cu Nanoparticles by Inert Gas Condensation M. Gracia-Pinilla E. Martinez G. Silva Vidaurri E. Perez-Tijerina Received 17 June 2009 Accepted 4 October 2009 Published online 6 November 2009 to the authors 2009 Abstract Nanometer size-selected Cu clusters in the size range of 1-5 nm have been produced by a plasma-gascondensation-type cluster deposition apparatus which combines a grow-discharge sputtering with an inert gas condensation technique. With this method by controlling the experimental conditions it was possible to produce nanoparticles with a strict control in size. The structure and size of Cu nanoparticles were determined by mass spectroscopy and confirmed by atomic force microscopy AFM and scanning electron transmission microscopy STEM measurements. In order to preserve the structural and morphological properties the energy of cluster impact was controlled the energy of acceleration of the nanoparticles was in near values at ev atom for being in soft landing regime. From SEM measurements developed in STEM-HAADF mode we found that nanoparticles are near sized to those values fixed experimentally also M. Gracia-Pinilla G. S. Vidaurri E. Perez-Tijerina Facultad de Ciencias Fisico-Matematicas Universidad Autonoma de Nuevo León San Nicolas de los Garza Nuevo Leon 66450 Mexico e-mail E. Perez-Tijerina e-mail M. Gracia-Pinilla G. S. Vidaurri E. Perez-Tijerina Centro de Innovation Investigation y Desarrollo en Ingenieria y Tecnologia Laboratorio de Nanociencias y Nanotecnologia CIIDIT-UANL PIIT Monterrey Apodaca NL 66600 Mexico E. Martinez El Centro de Investigation en Materiales Avanzados . CIMAV Av. Alianza Norte 202 Parque de Investigation e Innovation Tecnologica PIIT Nueva Carretera Aeropuerto Km. 10 Apodaca Nuevo León 66600 Mexico e-mail confirmed by AFM .