scholarly journals Atomic Resolution Imaging of Nanoscale Chemical Expansion in PrxCe1–xO2−δ during In Situ Heating

ACS Nano ◽  
2018 ◽  
Vol 12 (2) ◽  
pp. 1359-1372 ◽  
Author(s):  
Jessica G. Swallow ◽  
Ja Kyung Lee ◽  
Thomas Defferriere ◽  
Gareth M. Hughes ◽  
Shilpa N. Raja ◽  
...  
Keyword(s):  
Atomic Resolution ◽  
Chemical Expansion ◽  
Resolution Imaging ◽  
In Situ Heating

Innovative Closed-Cell Reactor Permits In Situ Heating and Gas Reactions with Atomic Resolution at Atmospheric Pressure

2012 ◽  
Vol 18 (S2) ◽  
pp. 1118-1119 ◽  
Author(s):  
L. Allard ◽  
S.H. Overbury ◽  
M.B. Katz ◽  
W.C. Bigelow ◽  
D. Nackashi ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Atomic Resolution ◽  
Closed Cell ◽  
Cell Reactor ◽  
In Situ Heating ◽  
Gas Reactions

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals A (S)TEM Gas Cell Holder with Localized Laser Heating forIn SituExperiments

2013 ◽  
Vol 19 (2) ◽  
pp. 470-478 ◽  
Author(s):  
Shareghe Mehraeen ◽  
Joseph T. McKeown ◽  
Pushkarraj V. Deshmukh ◽  
James E. Evans ◽  
Patricia Abellan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Ambient Pressure ◽  
Atomic Resolution ◽  
Sample Type ◽  
Gas Cell ◽  
Resolution Imaging ◽  
Path Lengths

AbstractThe advent of aberration correction for transmission electron microscopy has transformed atomic resolution imaging into a nearly routine technique for structural analysis. Now an emerging frontier in electron microscopy is the development ofin situcapabilities to observe reactions at atomic resolution in real time and within realistic environments. Here we present a newin situgas cell holder that is designed for compatibility with a wide variety of sample type (i.e., dimpled 3-mm discs, standard mesh grids, various types of focused ion beam lamellae attached to half grids). Its capabilities include localized heating and precise control of the gas pressure and composition while simultaneously allowing atomic resolution imaging at ambient pressure. The results show that 0.25-nm lattice fringes are directly visible for nanoparticles imaged at ambient pressure with gas path lengths up to 20 μm. Additionally, we quantitatively demonstrate that while the attainable contrast and resolution decrease with increasing pressure and gas path length, resolutions better than 0.2 nm should be accessible at ambient pressure with gas path lengths less than the 15 μm utilized for these experiments.

scholarly journals Atomic-Resolution Imaging and In-situ EELS Study of Ferroelastic and Ferromagnetic Ordering in LaCoO3

2011 ◽  
Vol 17 (S2) ◽  
pp. 828-829
Author(s):  
T Yuan ◽  
N Orlovskaya ◽  
R Klie
Keyword(s):  
Atomic Resolution ◽  
Resolution Imaging ◽  
Ferromagnetic Ordering

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

scholarly journals In-situ observation and atomic resolution imaging of the ion irradiation induced amorphisation of graphene

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
C.-T. Pan ◽  
J. A. Hinks ◽  
Q. M. Ramasse ◽  
G. Greaves ◽  
U. Bangert ◽  
...  
Keyword(s):  
Ion Irradiation ◽  
Atomic Resolution ◽  
In Situ Observation ◽  
Resolution Imaging

scholarly journals Investigating Ferroelectric Domain and Domain Wall Dynamics at Atomic Resolution by TEM/STEM in situ Heating and Biasing

2019 ◽  
Vol 25 (S2) ◽  
pp. 1882-1883
Author(s):  
Michele Conroy ◽  
Kalani Moore ◽  
Eoghan O'Connell ◽  
Eileen Courtney ◽  
Alan Harvey ◽  
...  
Keyword(s):  
Domain Wall ◽  
Ferroelectric Domain ◽  
Atomic Resolution ◽  
Domain Wall Dynamics ◽  
In Situ Heating

Electron Microscopy of Solid- Liquid Interfaces: HREM Observation and EELS Analysis

1999 ◽  
Vol 5 (S2) ◽  
pp. 706-707
Author(s):  
H. Saka ◽  
S. Arai ◽  
S. Tsukimoto ◽  
H. Miyai ◽  
M. Konno ◽  
...  
Keyword(s):  
Dynamical Behaviour ◽  
Atomic Resolution ◽  
Chemical Mapping ◽  
Liquid Interfaces ◽  
Transmission Electron ◽  
In Situ Heating ◽  
Electron Microscopes ◽  
Solid Liquid Interface ◽  
Solid Liquid

A solid-liquid interface in the Al–Si system has been observed at near-atomic resolution by in-situ heating experiments inside transmission electron microscopes. Chemical mapping was also attempt to detect distribution of constituent atoms near a solid–hquid interface.Mixtures of Al particles and Si particles, the diameter of which ranged from 200nm to 800nm, were mounted on a specimen–heating holder developed by Kamino and Saka and examined in a Hitachi H–9000NAR and a Hitachi HF–2000 electron microscope, operated at accelerating voltages of 300 and 200kV, respectively. Heating these specimens above the melting point of pure Al inside the microscopes resulted in the melting of the Al particles. The liquid Al reacted with nearby Si, leading to the formation of Al–Si alloy phase. An interface between solid Si and Al–Si alloy hquid and also an interface between solid Al and Al–Si alloy liquid were observed. The dynamical behaviour was recorded continuously using TV–VTR systems. The distribution of Al and Si was visualized using a Gatan imaging filter GIF analyzer.

Influence of ion-milling on the T2 phase in Al-2.5%Li-2.5%Cu alloy

1989 ◽  
Vol 47 ◽  
pp. 288-289
Author(s):  
J. R. Reed ◽  
D. J. Michel ◽  
P. R. Howell
Keyword(s):  
Thin Foil ◽  
Icosahedral Symmetry ◽  
Ion Milling ◽  
Cu Alloy ◽  
Thin Foils ◽  
Heat Treated ◽  
Aluminum Solid Solution ◽  
In Situ Heating ◽  
The Stability

The Al6Li3Cu (T2) phase, which exhibits five-fold or icosahedral symmetry, forms through solid state precipitation in dilute Al-Li-Cu alloys. Recent studies have reported that the T2 phase transforms either during TEM examination of thin foils or following ion-milling of thin foil specimens. Related studies have shown that T2 phase transforms to a microcrystalline array of the TB phase and a dilute aluminum solid solution during in-situ heating in the TEM. The purpose of this paper is to report results from an investigation of the influence of ion-milling on the stability of the T2 phase in dilute Al-Li-Cu alloy.The 3-mm diameter TEM disc specimens were prepared from a specially melted Al-2.5%Li-2.5%Cu alloy produced by conventional procedures. The TEM specimens were solution heat treated 1 h at 550°C and aged 1000 h at 190°C in air to develop the microstructure. The disc specimens were electropolished to achieve electron transparency using a 20:80 (vol. percent) nitric acid: methanol solution at -60°C.

scholarly journals Phase Transitions in a Perovskite Thin Film Studied by Environmental In Situ Heating Nano‐Beam Electron Diffraction (Small Methods 9/2021)

Small Methods ◽  
2021 ◽  
Vol 5 (9) ◽  
pp. 2170042
Author(s):  
Tobias Meyer ◽  
Birte Kressdorf ◽  
Vladimir Roddatis ◽  
Jörg Hoffmann ◽  
Christian Jooss ◽  
...  
Keyword(s):  
Thin Film ◽  
Phase Transitions ◽  
Electron Diffraction ◽  
Beam Electron ◽  
In Situ Heating
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