Block Copolymer Amphiphile Phase Diagrams by High-Throughput Transmission Electron Microscopy

2019 ◽  
Vol 52 (15) ◽  
pp. 5529-5537 ◽  
Author(s):  
Mollie A. Touve ◽  
Daniel B. Wright ◽  
Chen Mu ◽  
Hao Sun ◽  
Chiwoo Park ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Block Copolymer ◽  
Phase Diagrams ◽  
High Throughput ◽  
Transmission Electron

Oxide scale behavior of Al–7.5 mass%Mg alloy containing trace Ca during short-term oxidation

2021 ◽  
Vol 11 (11) ◽  
pp. 1881-1886
Author(s):  
Seong-Ho Ha ◽  
Young-Ok Yoon ◽  
Bong-Hwan Kim ◽  
Hyun-Kyu Lim ◽  
Sung-Hwan Lim ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Oxide Film ◽  
Phase Diagrams ◽  
Film Formation ◽  
Mg Alloy ◽  
Short Term ◽  
Spinel Formation ◽  
Transmission Electron ◽  
Significant Difference

In this study, using transmission electron microscopy and phase diagrams from thermodynamic calculations, we investigated the oxide film formation of Al–7.5 mass%Mg alloy containing Ca traces during short-term oxidation in terms of the thermodynamic stability and multi-element oxides by inter-diffusion based on the results of analysis for the oxide film. For the oxidation test at 515 ˚C, for 1 h, its results showed that there is no significant difference between the Ca-added and Ca-free Al–7.5 mass%Mg alloys was observed, while further exposure caused the Ca-free alloy to gain significant weight. Based on the standard Gibbs free energy for oxide production calculated in this study, CaO was the most preferential product among the single metal oxides examined. As per calculations for MgAl2O4-spinel formation reactions, the spinel formation from MgO was thermodynamically the most favorable. According to the phase diagrams calculated in this study, various multi-element oxides including Ca could possibly form in the oxide layer of Ca-added alloy. The analysis results of transmission electron microscopy confirmed that MgO is the primary oxide in the Al–Mg binary alloys. In oxidation tests conducted for less than 1 h, the spinel was rarely found. The outmost areas of oxide layers correspond to MgO and CaO in Ca-free and Ca-added alloys, respectively. However, in the Ca-added alloy, the inner layer contains certain amounts of Ca, Al, and Mg.

FASTDEF: Fast defocus and astigmatism estimation for high-throughput transmission electron microscopy

2013 ◽  
Vol 181 (2) ◽  
pp. 136-148 ◽  
Author(s):  
J. Vargas ◽  
J. Otón ◽  
R. Marabini ◽  
S. Jonic ◽  
J.M. de la Rosa-Trevín ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Throughput ◽  
Transmission Electron

Synthesis and characteristics of ZnS/CdS composite nanocrystals in block copolymer micelle

1999 ◽  
Vol 14 (6) ◽  
pp. 2381-2384 ◽  
Author(s):  
Dayang Wang ◽  
Yaan Cao ◽  
Xintong Zhang ◽  
Xinming Qian ◽  
Xin Ai ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Block Copolymer ◽  
Elemental Analysis ◽  
Surface Photovoltage ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Photovoltage Spectroscopy ◽  
Transmission Electron ◽  
Copolymer Micelle

In hydroxylated poly(styrene-b-butadiene-b-styrene) (HO–SBS) micelle, ZnS/CdS composite nanocrystals were prepared by adding Cd2+ ions and Zn2+ ions to the system sequentially. The resulting composites were identified with elemental analysis, transmission electron microscopy, x-ray diffraction, surface photovoltage spectroscopy, and electric field induced surface photovoltage spectroscopy.

Directly Resolved Core-Corona Structure of Block Copolymer Micelles by Cryo-Transmission Electron Microscopy

1999 ◽  
Vol 103 (47) ◽  
pp. 10331-10334 ◽  
Author(s):  
Yi Zheng ◽  
You-Yeon Won ◽  
Frank S. Bates ◽  
H. Ted Davis ◽  
L. E. Scriven ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Block Copolymer ◽  
Transmission Electron ◽  
Block Copolymer Micelles ◽  
Corona Structure ◽  
Copolymer Micelles

Novel lift-off technique for Transmission Electron Microscopy imaging of block copolymer films

2015 ◽  
Vol 150 ◽  
pp. 71-73 ◽  
Author(s):  
Fergus J.M. Roache ◽  
Mazdak Radjainia ◽  
David E. Williams ◽  
Juliet A. Gerrard ◽  
Jadranka Travas-Sejdic ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Block Copolymer ◽  
Microscopy Imaging ◽  
Copolymer Films ◽  
Transmission Electron ◽  
Lift Off
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