InN Nanostructured Materials: Controlled Synthesis, Characterizations, and Applications

2019 ◽  
Vol 8 (1) ◽  
pp. 131-136 ◽  
Author(s):  
Josh Mangum ◽  
Olga Kryliouk ◽  
H J. Park ◽  
T J. Anderson ◽  
Z Liliental-Weber
Keyword(s):  
Nanostructured Materials ◽  
Controlled Synthesis

In situ controlled synthesis of various TiO2 nanostructured materials via a facile hydrothermal route

2010 ◽  
Vol 13 (5) ◽  
pp. 1855-1863 ◽  
Author(s):  
Hai Wang ◽  
Yong Liu ◽  
Minyi Zhong ◽  
Hongmei Xu ◽  
Hong Huang ◽  
...  
Keyword(s):  
Nanostructured Materials ◽  
Controlled Synthesis ◽  
Hydrothermal Route ◽  
Facile Hydrothermal Route

High-resolution electron microscopy of nanostructured materials

1995 ◽  
Vol 53 ◽  
pp. 172-173
Author(s):  
M. José-Yacamán
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Grain Boundaries ◽  
Nanostructured Materials ◽  
High Resolution Electron Microscopy ◽  
Hrem Image ◽  
Small Particles ◽  
Resolution Electron ◽  
Nanophase Materials

Electron microscopy is a fundamental tool in materials characterization. In the case of nanostructured materials we are looking for features with a size in the nanometer range. Therefore often the conventional TEM techniques are not enough for characterization of nanophases. High Resolution Electron Microscopy (HREM), is a key technique in order to characterize those materials with a resolution of ~ 1.7A. High resolution studies of metallic nanostructured materials has been also reported in the literature. It is concluded that boundaries in nanophase materials are similar in structure to the regular grain boundaries. That work therefore did not confirm the early hipothesis on the field that grain boundaries in nanostructured materials have a special behavior. We will show in this paper that by a combination of HREM image processing, and image calculations, it is possible to prove that small particles and coalesced grains have a significant surface roughness, as well as large internal strain.

Columns: Nanostructured Materials

Polymer News ◽  
2005 ◽  
Vol 30 (7) ◽  
pp. 214-216
Author(s):  
G. Carotenuto
Keyword(s):  
Nanostructured Materials

Column: Nanostructured Materials

Polymer News ◽  
2004 ◽  
Vol 29 (3) ◽  
pp. 77-81
Author(s):  
G. Carotenuto
Keyword(s):  
Nanostructured Materials

Column: Nanostructured Materials

Polymer News ◽  
2004 ◽  
Vol 29 (1) ◽  
pp. 17-18
Author(s):  
G. Carotenuto
Keyword(s):  
Nanostructured Materials

Seeded Growth of Single-Crystal Two-Dimensional Covalent Organic Frameworks

2017 ◽  
Author(s):  
Austin M. Evans ◽  
Lucas R. Parent ◽  
Nathan C. Flanders ◽  
Ryan P. Bisbey ◽  
Edon Vitaku ◽  
...  
Keyword(s):  
Molecular Transport ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Seeded Growth ◽  
Covalent Bonds ◽  
Crystalline Materials ◽  
Step Procedure ◽  
Structures And Properties ◽  
2D Polymer

<div> <div> <div> <p>Polymerizing monomers into periodic two-dimensional (2D) networks provides structurally precise, atomically thin macromolecular sheets linked by robust, covalent bonds. These materials exhibit desirable mechanical, optoelectrotronic, and molecular transport properties derived from their designed structure and permanent porosity. 2D covalent organic frameworks (COFs) offer broad monomer scope, but are generally isolated as polycrystalline, insoluble powders with limited processability. Here we overcome this limitation by controlling 2D COF formation using a two- step procedure. In the first step, 2D COF nanoparticle seeds are prepared with approximate diameters of 30 nm. Next, monomers are slowly added to suppress new nucleation while promoting epitaxial growth on the existing seeds to sizes of several microns. The resulting COF nanoparticles are of exceptional and unprecedented quality, isolated as single crystalline materials with micron-scale domain sizes. These findings advance the controlled synthesis of 2D layered COFs and will enable a broad exploration of synthetic 2D polymer structures and properties. </p> </div> </div> </div>

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