Elastic properties in different nano-structured AlN films
نویسندگان
چکیده
منابع مشابه
NANO EXPRESS Berkovich Nanoindentation on AlN Thin Films
Berkovich nanoindentation-induced mechanical deformation mechanisms of AlN thin films have been investigated by using atomic force microscopy (AFM) and cross-sectional transmission electron microscopy (XTEM) techniques. AlN thin films are deposited on the metalorganic chemical-vapor deposition (MOCVD) derived Si-doped (2 9 10 cm) GaN template by using the helicon sputtering system. The XTEM sam...
متن کاملSize-dependent and tunable elastic and geometrical properties of nano-structured hierarchical cellular materials
The basic building blocks of nano-structured hierarchical cellular materials are nano-sized wires or plates. Due to the effects of surface elasticity and the initial stress/strain, their bending, torsion, stretching and transverse shear rigidities are not only size-dependent, but also tunable and controllable over a large range. Based on the closed form results of the bending, torsion, stretchi...
متن کاملNano-structured ZnO films by sol-gel process
Thin films of ZnO grown by sol-gel spin method using two different precursors viz. zinc nitrate and zinc acetate have been characterized for their crystalline nature and associated nanostructures. In some cases, the films consist of nanostructures in the form of nanocrystals and nanoneedles of dimensions in the range 15-60 nm. A comparison between the physical characterization and the nanostruc...
متن کاملBuckling in wurtzite-like AlN nanostructures and crystals: Why nano can be different
The buckling of hexagonal layers in bulk and nanostructures of AlN is analyzed in the framework of atomistic and first principles techniques. At ambient conditions, the wurtzite structure (B4) of AlN consists of buckled hexagons. On the other hand, a non-buckled Bk structure is found to be metastable at zero pressure, being favored at higher pressures. It is suggested that the energy ordering o...
متن کاملNano-structured magnetic metamaterial with enhanced nonlinear properties
Nano-structuring can significantly modify the properties of materials. We demonstrate that size-dependent modification of the spin-wave spectra in magnetic nano-particles can affect not only linear, but also nonlinear magnetic response. The discretization of the spectrum removes the frequency degeneracy between the main excitation mode of a nano-particle and the higher spin-wave modes, having t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Materials Science
سال: 2010
ISSN: 0022-2461,1573-4803
DOI: 10.1007/s10853-009-3944-3