Springer Heidelberg;Berlin/Heidelberg: Springer Berlin Heidelberg
摘要:
摘要： We observe that silver atoms deposited by thermal evaporation deposition onto n -layer graphene films condense upon annealing to form nanoparticles with an average diameter and density that is determined by the layer numbers of graphene films. The optical microscopy and Raman spectroscopy were utilized to identify the number of the graphene layers and the SEM (scanning electron microscopy) was used to observe the morphologies of the particles. Systematic analysis revealed that the average sizes of the nanoparticles increased with the number of graphene layers. The density of nanoparticles decreased as the number of graphene layers increased, revealing a large variation in the surface diffusion strength of nanoparticles on the different substrates. The mechanisms of formation of these layer-dependent morphologies of silver nanoparticles are related to the surface free energy and surface diffusion of the n -layer graphenes. 其他題名： Appl. Phys. A 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2014-05-01 出處： Applied physics. A, Materials science & processing, 2014-05, Vol.115 (2), p.399-402 資源來源： EBSCOhost Academic Search Premier 版權： Springer-Verlag Berlin Heidelberg 2013 識別號： ISSN: 0947-8396 識別號： EISSN: 1432-0630 識別號： DOI: 10.1007/s00339-013-8076-6
