Gold nanowires and the effect of impurities

نویسندگان

  • EdisonZda Silva
  • Frederico D Novaes
  • AntônioJRda Silva
  • A Fazzio
چکیده

Metal nanowires and in particular gold nanowires have received a great deal of attention in the past few years. Experiments on gold nanowires have prompted theory and simulation to help answer questions posed by these studies. Here we present results of computer simulations for the formation, evolution and breaking of very thin Au nanowires. We also discuss the influence of contaminants, such as atoms and small molecules, and their effect on the structural and mechanical properties of these nanowires. PACS 71.15.-m Æ 71.15.Fv Æ 71.15.Nc

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Gold catalytic Growth of Germanium Nanowires by chemical vapour deposition method

Germanium nanowires (GeNWs) were synthesized using chemical vapor deposition (CVD) based on vapor–liquid–solid (VLS) mechanism with Au nanoparticles as catalyst and germanium tetrachloride (GeCl4) as a precursor of germanium. Au catalysts were deposited on silicon wafer as a thin film, firstly by sputtering technique and secondly by submerging the silicon substrates in Au colloidal s...

متن کامل

SYNTHESIS OF HIGH ASPECT RATIO SILVER NANOWIRES: PARAMETRIC STUDY OF THE POLYOL PROCESS

Silver nanowires (AgNWs) are considered as one-dimensional nanostructures, which have received much attention due to their nanoscale size, high aspect ratio, high electrical and thermal conductivity, optical transparency and high mechanical stability. Preparation of AgNWs by polyol process is remarkably sensitive to the interactions between synthesis parameters. In this study, the effect of the...

متن کامل

Localized Growth and Characterization of Silicon Nanowires

This thesis deals with the epitaxial growth and characterization of silicon nanowires, because these nanostructures have recently been incorporated in functional devices with success, but a reproducible use requires a deeper understanding of their physical properties. As the growth proceeds through the incorporation of Si species into catalyst particles, we first investigated the formation of g...

متن کامل

À impurity in pure gold clusters and implications for the anomalous Au-Au distances in gold nanowires

Au2H 2 was recognized and confirmed as a minor contamination to typical photoelectron spectra of Au2 2 , produced by laser vaporization of a pure Au target using an ultrahigh purity helium carrier gas. The hydrogen source was shown to be from trace H impurities present in the bulk gold target. Carefully designed experiments using H2and D2-seeded helium carrier gas were used to study the electro...

متن کامل

Ab initio study of evolution of mechanical and transport properties of clean and contaminated Au nanowires along the deformation path

We present a first-principles study of the evolution of the mechanical and transport properties of clean and contaminated Au nanowires during the whole breaking process. We combine density functional theory total energy calculations and Keldysh Green’s function methods in order to determine the changes in the structure and conductance induced by the presence of hydrogen and oxygen atomic impuri...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 1  شماره 

صفحات  -

تاریخ انتشار 2006