Understanding the growth of amorphous SiO2 nanofibers and crystalline binary nanoparticles produced by laser ablation.

نویسندگان

  • Maria Dimitrakopoulou
  • Sandeep Gorantla
  • Jürgen Thomas
  • Thomas Gemming
  • Gianaurelio Cuniberti
  • Bernd Büchner
  • Mark H Rümmeli
چکیده

The pulsed-laser evaporation synthesis of silica nanofibers and crystalline binary nanoparticles is investigated in detail. By careful adjustment of the synthesis parameters one can tailor the product to form high yield nanofibers or binary nanoparticles. Some control on their diameters is also possible through the synthesis parameters. Oxidation of the nanofibers occurs upon exposure to air after the reaction.

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

Steps toward interstellar silicate mineralogy V. Thermal evolution of amorphous magnesium silicates and silica

The thermally induced amorphous-to-crystalline transition has been studied for bulk sheets and micrometre-sized particles of magnesium silicate glass (MgSiO3), nanometresized amorphous magnesium silicate (MgSiO3 and Mg2SiO4 smokes) and amorphous silica particles (SiO2). Silicate glass was produced by the shock-quenching of melts. Samples of nanometre-sized smoke particles have been obtained by ...

متن کامل

Preparation and Characterization of ZnO Nanoparticles by Laser Ablation in NaOH Aqueous Solution

In the recent years, laser ablation in liquid has become an increasingly important technique for the fabrication of NPs. this paper reports our recent studies on the generation of ZnO NPs by ablation of metal targets in aqueous environments using Q-switch Nd-YAG laser (λ=532nm) immersed in NaOH (0.1M). The Surface topography studied by atomic force microscopy revealed wider size distributio...

متن کامل

Acute toxicity of synthetic colloidal silver nanoparticles produced by laser ablation method to Eastern mosquitofish, Gambusia holbrooki

Considering the growing production, consumption of nanomaterials and their probable release into the aquatic ecosystems and study on the toxic effects of these materials are of critical importance to aquatic organisms. In this study, the acute toxicity of silver nanoparticles (AgNPs) produced by a physical method (laser ablation) was examined on Gambusia fish. Acute toxicity tests were planned ...

متن کامل

Production of nanoparticles from natural hydroxylapatite by laser ablation

Laser ablation of solids in liquids technique has been used to obtain colloidal nanoparticles from biological hydroxylapatite using pulsed as well as a continuous wave (CW) laser. Transmission electron microscopy (TEM) measurements revealed the formation of spherical particles with size distribution ranging from few nanometers to hundred nanometers and irregular submicronic particles. High reso...

متن کامل

Nonlinear Optical Absorption of Carbon Nanostructures Synthesized by Laser Ablation of Highly Oriented Pyrolytic Graphite in Organic Solvents

In this study, Highly Oriented Pyrolytic Graphite was ablated in various polar and nonpolar solvents by Q-switched neodymium: yttrium-aluminum-garnet laser (wavelength=1064 nm, frequency=2 kHz, pulse duration=240 ns). Then, the products were examined using Scanning Electron Microscopy and UV-Vis spectroscopy. The images showed that different carbon structures such as cauliflower-like structures...

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:
  • Nanotechnology

دوره 23 3  شماره 

صفحات  -

تاریخ انتشار 2012