نتایج جستجو برای: پوسته aupd
تعداد نتایج: 5240 فیلتر نتایج به سال:
We have synthesized epitaxial Au, Pd, and AuPd nanowire arrays in vertical or horizontal alignment on a c-cut sapphire substrate. We show that the vertical and horizontal nanowire arrays grow from half-octahedral seeds by the correlations of the geometry and orientation of seed crystals with those of as-grown nanowires. The alignment of nanowires can be steered by changing the atom flux. At low...
The shape of AuPd nanoparticles is engineered by surface stress relaxation, achieved varying the Au content in Pd-rich compositions. are grown gas phase for several compositions and growth conditions. Their structure atomically resolved HRTEM/STEM EDX. In pure Pd distributions dominant structures FCC truncated octahedra (TO), while increasing there a transition to icosahedral (Ih) which atoms p...
Heterogeneous Ag/Au nanoparticles combined with Pd ions were generated by irradiating metal targets in a solution nanosecond and femtosecond lasers. AgPd AuPd laser fragmentation bonded. We numerically analyzed the hot spots electromagnetic field enhancement of different sizes separated various distances. differing diameter showed characteristics compared to typical core-shell heterogeneous nan...
Ever since the first discoveries of the quantum-interference transport in mesoscopic systems, the electron dephasing times, τφ, in the concentrated AuPd alloys have been extensively measured. The samples were made from different sources with different compositions, prepared by different deposition methods, and various geometries (1D narrow wires, 2D thin films, and 3D thick films) were studied....
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