In situ transmission electron microscopy of solid–liquid phase transition of silica encapsulated bismuth nanoparticles

Nanoscale ◽  
2011 ◽  
Vol 3 (9) ◽  
pp. 3700 ◽  
Author(s):  
Jianjun Hu ◽  
Yan Hong ◽  
Chris Muratore ◽  
Ming Su ◽  
Andrey A. Voevodin
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Liquid Phase ◽  
Liquid Phase Transition ◽  
Bismuth Nanoparticles ◽  
Transmission Electron ◽  
Solid Liquid

scholarly journals Direct TEM observation of the “acanthite α-Ag2S–argentite β-Ag2S” phase transition in a silver sulfide nanoparticle

2019 ◽  
Vol 1 (4) ◽  
pp. 1581-1588 ◽  
Author(s):  
S. I. Sadovnikov ◽  
E. Yu. Gerasimov
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Silver Sulfide ◽  
Transmission Electron ◽  
Silver Sulfide Nanoparticles ◽  
Microscopy Method ◽  
Electron Microscopy Method ◽  
First Time

For the first time, the α-Ag2S (acanthite)–β-Ag2S (argentite) phase transition in a single silver sulfide nanoparticles has been observed in situ using a high-resolution transmission electron microscopy method in real time.

In Situ Heating Transmission Electron Microscopy

MRS Bulletin ◽  
2008 ◽  
Vol 33 (2) ◽  
pp. 93-100 ◽  
Author(s):  
Hiroyasu Saka ◽  
Takeo Kamino ◽  
Shigeo Ara ◽  
Katsuhiro Sasaki
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Temperature Effects ◽  
Size Dependence ◽  
Factors Affecting ◽  
Fundamental Information ◽  
Transmission Electron ◽  
Solid Liquid Interface ◽  
Solid Liquid

AbstractTemperature is one of the most important factors affecting the state and behavior of materials. In situ heating transmission electron microscopy (TEM) is a powerful tool for understanding such temperature effects, and recently in situ heating TEM has made significant progress in terms of temperature available and resolution attained. This article briefly describes newly developed specimen-heating holders, which are useful in carrying out in situ heating TEM experiments. It then focuses on three main applications of these specimen holders: solid–solid reactions, solid–liquid reactions (including highresolution observation of a solid–liquid interface, size dependence of the melting temperatures of one-, two- and three-dimensionally reduced systems, size dependence of the contact angle of fine metal liquid, and wetting of Si with liquid Au or Al) and solid–gas reactions. These results illustrate the benefit of in situ heating TEM for providing fundamental information on temperature effects on materials.

Effect of Shape on Solid-Liquid Phase Changes of Xe Precipitates in An Al Matrix

2001 ◽  
Vol 7 (S2) ◽  
pp. 1258-1259
Author(s):  
K. Mitsuishi ◽  
C.W. Allen ◽  
R. C. Birtcher ◽  
U. Dahmen
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Liquid Phase ◽  
Room Temperature ◽  
Critical Size ◽  
Phase Changes ◽  
Rare Gas ◽  
Transmission Electron ◽  
Solid Liquid ◽  
Al Matrix

It is well known that rare-gas Xe atoms embedded in a crystalline Al matrix form precipitates having cuboctahedral shapes bounded by ﹛100﹜ and ﹛111﹜ surfaces1. Below a certain critical size, Xe precipitates are observed to be solid, even at room temperature. This is a result of the Laplace pressure, which is inversely proportional to the radius of the precipitate. Donnelly et al. reported that the critical size of Xe solidification was expected at 4nm in radius at room temperature.Using high-resolution transmission electron microscopy, it is possible to observe these particles directly. It has been demonstrated that under off-Bragg conditions, the Al lattice fringes are minimized whereas the Xe lattice fringes are maximized. From such observations, it was confirmed experimentally that the average critical size of Xe precipitates is around 4 to 5nm in radius. However, much larger Xe precipitates are sometime observed to remain solid.

In situ Observation of Solid–liquid Interfaces by Transmission Electron Microscopy

2005 ◽  
Vol 20 (7) ◽  
pp. 1629-1640 ◽  
Author(s):  
H. Saka ◽  
K. Sasaki ◽  
S. Tsukimoto ◽  
S. Arai
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
In Situ Observation ◽  
Liquid Interfaces ◽  
Liquid Phases ◽  
Transmission Electron ◽  
Means Of Transmission ◽  
Solid Liquid Interface ◽  
Solid Liquid

Recent progress in in situ observation of solid–liquid interfaces by means of transmission electron microscopy, carried out by the Nagoya group, was reviewed. The results obtained on pure materials are discussed based on Jackson's theory. The structure of the solid–liquid interfaces of eutectic alloys was also observed. The in situ observation technique of solid–liquid interface is applied to industrially important reactions which include liquid phases.

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