نتایج جستجو برای: nanostructured multilayers

تعداد نتایج: 20888  

2001
A. W. Rushforth P. C. Main B. L. Gallagher B. J. Hickey

We have measured the magnetic domain patterns in Co/Pd multilayers of varying thickness using magnetic force microscopy in the presence of an external magnetic field applied perpendicular to the multilayers. We find that the domain patterns evolution is in qualitative agreement with existing theories for single layer thin films. Our results are in reasonable agreement with a theoretical model o...

2007
M.J.M. Pires J. C. Denardin L. Spinu

The uniaxial in-plane and out-of-plane anisotropies of [Co/SiO2] 10 multilayers have been studied by ferromagnetic resonance, magnetometry and transmission electron microscopy. The surface and volume anisotropy constants are in the range of values typical for multilayers with Co and transition metals of the iron group. The influence of the intermixed Co–SiO2 region is discussed. # 2007 Elsevier...

2016
Zhangwei Chen Nigel Brandon

The objectives of this study were to analyse the effect of inkjet 3-D printing parameters, particularly the splat overlap distance, for the fabrication of defect-free porous Al2O3 ceramic multilayers, and to correlate the resulting porosities with the mechanical properties measured using nanoindentation. An aqua-based alumina ink was used in this study to fabricate the multilayers on dense alum...

Journal: :Physical chemistry chemical physics : PCCP 2005
Fengjun Deng Shaowei Chen

Gold nanoparticle multilayers were self-assembled onto an electrode surface by using a dipping method. The particle assemblies exhibited quantized capacitance charging characteristics in aqueous media that were rectified by hydrophobic anions such as PF6-, BF4- and ClO4-, similar to the behavior with the monolayer counterparts. More interestingly, even in the presence of less hydrophobic anions...

2005
J. J. Lee J. E. Medvedeva J. H. Song Y. Cui A. J. Freeman J. B. Ketterson

We report on novel ferromagnetic Mn/Ge multilayers for spintronics applications investigated both experimentally and theoretically. Two Mn/Ge multilayers are grown on GaAs (001) substrates by molecular beam epitaxy. The period of each multilayer consists of an Mn layer of varying thickness (0.6 and 5 Å) and a 10 Å thick Ge spacer layer. From temperaturedependent magnetization and hysteresis loo...

2005
J. Topsch W. Mueller-Klieser M. Scholz G. Kraft

In the current project on effects of heavy ion irradiation in planar multilayer cell cultures, a “multicellular sensitization” was observed, i. e., multilayers were more radiosensitive than monolayers when treated under identical conditions [1]. This phenomenon was observed in multilayers, but also in multicell spheroids of SiHa and WiDr human tumor cells using plateau region or Bragg peak carb...

Journal: :Science 2004
Zoltán Erdélyi Marcel Sladecek Lorenz-M Stadler Ivo Zizak Gábor A Langer Miklós Kis-Varga Deszo L Beke Bogdan Sepiol

We observed that diffuse interfaces sharpen rather than broaden in completely miscible ideal binary systems. This is shown in situ during heat treatments at gradually increasing temperatures by scattering of synchrotron radiation in coherent Mo/V multilayers containing initially diffuse interfaces. This effect provides a useful tool for the improvement of interfaces and offers a way to fabricat...

Journal: :Physical review letters 2004
Venkateswarlu Panchagnula Junhwan Jeon Andrey V Dobrynin

Electrostatic assembly of multilayered thin films through sequential adsorption of polyions in layer-by-layer fashion utilizes the strong electrostatic attraction between oppositely charged molecules. We perform molecular dynamics simulations of multilayers of flexible polyelectrolytes around a charged spherical particle. Our simulations establish that the charge reversal after each deposition ...

1997
Wenbin Lin Tien-Lin Lee Paul F. Lyman Jaejin Lee Michael J. Bedzyk Tobin J. Marks

This contribution reports the first X-ray standing wave structural characterization of self-assembled NLOactive chromophoric multilayers (SAMs). These siloxane-based self-assembled stilbazolium multilayers are intrinsically acentric and exhibit very large second-order nonlinear optical responses. The locations of bromide ions within the SAMs were precisely determined using X-ray standing waves ...

Silicoaluminophosphate (SAPO-34) molecular sieve doped with transition metals, Mn and Ni, with different molar ratios (Mn/Ni=0.33, 3) were investigated for their activity, selectivity and lifetime in biomethanol to olefins reaction. MnNiAPSO-34 nanostructured catalyst was synthesized by hydrothermal method and addition of metals was carried out by isomorphous substitution into the crystalline f...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید