نتایج جستجو برای: hexagonal nanostructures

تعداد نتایج: 32446  

Flower-like ZnO nanostructures were synthesized by decomposing Zn(OH)2 in 1,4- butanediol at 105 °C for 36 h. Size of flower-like ZnO nanostructure can be controlled by pH of the aqueous solution. In the preparation of flower-like ZnO nanostructure, zinc nitrate was used as a precursor. The morphology and microstructure of flower-like ZnO nanostructure have been characterized by scanning electr...

Journal: :journal of nanostructures 0
ashish karn st. anthony falls laboratory, university of minnesota twin cities, minneapolis, mn, usa nitesh kumar yale university, whitney avenue, new haven, ct, usa sivanandam aravindan indian institute of technology delhi, hauz khas, new delhi, india

the current study reports some interesting growth of novel in2o3 nanostructures using ambient-controlled chemical vapor deposition technique in the presence of a strongly reducing hydrazine ambient. the experiments are systematically carried out by keeping either of the carrier gas flow rate or the source temperature constant, and varying the other. for each of the depositions, the growth is st...

2013
Yong Ding Fang Zhang Zhong Lin Wang Zhong Lin Wang

Characterizing the three‐dimensional (3D) shape of a nanostructure by conventional imaging techniques in scanning electron microscopy and transmission electron microscopy can be limited or complexed by various factors, such as 2D projection, diffraction contrast and unsure orientation of the nanostructure with respect to the electron beam direction. In this paper, in conjunction with e...

Journal: :Journal of nanoscience and nanotechnology 2008
Wenzhong Wang Xiao Yan Bed Poudel Yi Ma Qing Hao Jian Yang Gang Chen Zhifeng Ren

We describe a one-step, one-pot non-aqueous route for the synthesis of Sb2Te3 nanocrystals with hexagonal shape and highly anisotropic nanostructures. The as-prepared nanostructures were characterized by XRD, TEM and HRTEM. The effect of the stabilizers on the nanocrystal morphology has been discussed in detail. We have studied the thermal conductivity of the compacted bulk from the Sb2Te3 nano...

2011
K Kadel Latha Kumari WZ Li Jian Yu Huang Paula P Provencio

Bismuth selenide (Bi2Se3) nanostructures were synthesized via solvothermal method. The crystallinity of the as-synthesized sample has been analyzed by X-ray diffraction, which shows the formation of rhombohedral Bi2Se3. Electron microscopy examination indicates that the Bi2Se3 nanoparticles have hexagonal flake-like shape. The effect of the synthesis temperature on the morphology of the Bi2Se3 ...

Ashish Karn, Nitesh Kumar Sivanandam Aravindan

The current study reports some interesting growth of novel In2O3 nanostructures using ambient-controlled chemical vapor deposition technique in the presence of a strongly reducing hydrazine ambient. The experiments are systematically carried out by keeping either of the carrier gas flow rate or the source temperature constant, and varying the other. For each of the depositions, the growth is st...

2013
Jian-Wei Ho Qixun Wee Jarrett Dumond Andrew Tay Soo-Jin Chua

We report on a method of fabricating variable patterns of periodic, high aspect ratio silicon nanostructures with sub-50-nm resolution on a wafer scale. The approach marries step-and-repeat nanoimprint lithography (NIL) and metal-catalyzed electroless etching (MCEE), enabling near perfectly ordered Si nanostructure arrays of user-defined patterns to be controllably and rapidly generated on a wa...

In this research, self-assembled copper sulfide nanospheres were synthesized by the solvothermal method and the effects of reaction parameters, including reaction time and reaction temperature on the morphology and phase evolution of copper sulfide nanostructures were investigated. For the identification of copper sulfide nanostructures, X-ray diffraction (XRD), infrared spectroscopy (FT-IR), f...

Journal: :Nanoscale 2014
Hong-Jie Yang Sheng-Yan He Hsing-Yu Tuan

Single-component nanostructures with axial asymmetry were successfully synthesized in organic solvents via a new type of growth model. Asymmetric axial ZnO nanospindles with a hexagonal cross-section were produced by a growth model consisting of simultaneous axial screw dislocation-mediated growth and radial layer-by-layer deposition. The growth process of ZnO nanospindles is explained by compr...

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