Stepwise assembly in three dimensions: Preparation and characterization of layered gold nanoparticles in porous silica matrices

1997 ◽  
Vol 9 (9) ◽  
pp. 728-731 ◽  
Author(s):  
Hongyou Fan ◽  
Yuqing Zhou ◽  
Gabriel P. Lopez
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silica ◽  
Three Dimensions ◽  
Silica Matrices ◽  
Stepwise Assembly

convergent-beam diffraction from surfaces

1987 ◽  
Vol 45 ◽  
pp. 30-33
Author(s):  
J. A. Eades ◽  
A. E. Smith ◽  
D. F. Lynch
Keyword(s):  
Reciprocal Lattice ◽  
Three Dimensional ◽  
Grazing Incidence ◽  
Three Dimensions ◽  
Plane Figure ◽  
Transmission Electron ◽  
Convergent Beam ◽  
Beam Patterns ◽  
Beam Diffraction

It is quite simple (in the transmission electron microscope) to obtain convergent-beam patterns from the surface of a bulk crystal. The beam is focussed onto the surface at near grazing incidence (figure 1) and if the surface is flat the appropriate pattern is obtained in the diffraction plane (figure 2). Such patterns are potentially valuable for the characterization of surfaces just as normal convergent-beam patterns are valuable for the characterization of crystals.There are, however, several important ways in which reflection diffraction from surfaces differs from the more familiar electron diffraction in transmission.GeometryIn reflection diffraction, because of the surface, it is not possible to describe the specimen as periodic in three dimensions, nor is it possible to associate diffraction with a conventional three-dimensional reciprocal lattice.

Fabrication and Characterization of Chain-like Arrangement of Gold Nanoparticles using Nanotemplates

2015 ◽  
Vol 135 (11) ◽  
pp. 474-475
Author(s):  
Koji Sugano ◽  
Ryoji Hiraoka ◽  
Toshiyuki Tsuchiya ◽  
Osamu Tabata
Keyword(s):  
Gold Nanoparticles ◽  
Fabrication And Characterization

scholarly journals I’m Every Woman: Advancing the Intersectional Leadership of Black Women School Leaders as Anti-Racist Praxis

2021 ◽  
Vol 31 (1-2) ◽  
pp. 7-28
Author(s):  
April L. Peters ◽  
Angel Miles Nash
Keyword(s):  
Black Women ◽  
The United States ◽  
Women's Leadership ◽  
Three Dimensions ◽  
Race And Gender ◽  
Leadership Framework ◽  
And Gender ◽  
Resisting Oppression ◽  
Epistemological Basis

The rallying, clarion call to #SayHerName has prompted the United States to intentionally include the lives, voices, struggles, and contributions of Black women and countless others of her ilk who have suffered and strived in the midst of anti-Black racism. To advance a leadership framework that is rooted in the historicity of brilliance embodied in Black women’s educational leadership, and their proclivity for resisting oppression, we expand on intersectional leadership. We develop this expansion along three dimensions of research centering Black women’s leadership: the historical foundation of Black women’s leadership in schools and communities, the epistemological basis of Black women’s racialized and gendered experiences, and the ontological characterization of Black women’s expertise in resisting anti-Black racism in educational settings. We conclude with a four tenet articulation detailing how intersectional leadership: (a) is explicitly anti-racist; (b) is explicitly anti-sexist; (c) explicitly acknowledges the multiplicative influences of marginalization centering race and gender, and across planes of identity; and (d) explicitly leverages authority to serve and protect historically underserved communities.

scholarly journals Structural and chemical characterization of MoO2/MoS2 triple-hybrid materials using electron microscopy in up to three dimensions

2021 ◽  
Author(s):  
Anna Frank ◽  
Thomas Gänsler ◽  
Stefan Hieke ◽  
Simon Fleischmann ◽  
Samantha Husmann ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Chemical Characterization ◽  
Three Dimensions ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Carbon Nanotube Network ◽  
Core Shell Nanoparticles

This work presents the synthesis of MoO2/MoS2 core/shell nanoparticles within a carbon nanotube network and their detailed electron microscopy investigation in up to three dimensions. The triple-hybrid core/shell material was...

Microstructural characterization of gold nanoparticles synthesized by solution plasma processing

2011 ◽  
Vol 22 (45) ◽  
pp. 455701 ◽  
Author(s):  
Sung-Pyo Cho ◽  
Maria Antoaneta Bratescu ◽  
Nagahiro Saito ◽  
Osamu Takai
Keyword(s):  
Gold Nanoparticles ◽  
Plasma Processing ◽  
Microstructural Characterization ◽  
Solution Plasma Processing

Towards 3D image-based nanocrystallography by means of transmission electron goniometry

2004 ◽  
Vol 839 ◽  
Author(s):  
Peter Moeck ◽  
Wentao Qin ◽  
Philip B. Fraundorf
Keyword(s):  
Lattice Structure ◽  
Three Dimensions ◽  
Structural Defects ◽  
Transmission Electron ◽  
Means Of Transmission ◽  
Z Contrast ◽  
Individual Nanoparticles ◽  
Nanocrystal Model ◽  
The Ideal

ABSTRACTIt is well known that the crystallographic phase and morphology of many materials changes with the crystal size in the tens of nanometer range and that many nanocrystals possess structural defects in excess of their equilibrium levels. A need to determine the ideal and real structure of individual nanoparticles, therefore, arises. High-resolution phase-contrast transmission electron microscopy (TEM) and atomic resolution Z-contrast scanning TEM (STEM) when combined with transmission electron goniometry offer the opportunity of develop dedicated methods for the crystallographic characterization of nanoparticles in three dimensions. This paper describes tilt strategies for taking data from individual nanocrystals “as found”, so as to provide information on their lattice structure and orientation, as well as on the structure and orientation of their surfaces and structural defects. Internet based java applets that facilitate the application of this technique for cubic crystals with calibrated tilt-rotation and double-tilt holders are mentioned briefly. The enhanced viability of image-based nanocrystallography in future aberration-corrected TEMs and STEMs is illustrated on a nanocrystal model system.

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