Advances in the environmental transmission electron microscope (ETEM) for nanoscale in situ studies of gas–solid interactions

2014 ◽  
Vol 50 (21) ◽  
pp. 2696-2706 ◽  
Author(s):  
J. R. Jinschek
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Structural Information ◽  
Structure Property ◽  
In Situ Studies ◽  
Environmental Transmission ◽  
Transmission Electron ◽  
Technology Advances

This review highlights how ETEM technology advances have enabled new essential (structural) information that improve our understanding of nanomaterials' structure–property–function relationships.

scholarly journals In situ light spectroscopy in the environmental transmission electron microscope (ETEM)

2012 ◽  
Vol 18 (S2) ◽  
pp. 1184-1185
Author(s):  
F. Cavalca ◽  
T.W. Hansen ◽  
J.B. Wagner ◽  
C. Langhammer ◽  
T. Pedersen ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Environmental Transmission ◽  
Transmission Electron

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

Controlled Environment Specimen Transfer

2014 ◽  
Vol 20 (4) ◽  
pp. 1038-1045 ◽  
Author(s):  
Christian D. Damsgaard ◽  
Henny Zandbergen ◽  
Thomas W. Hansen ◽  
Ib Chorkendorff ◽  
Jakob B. Wagner
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Elevated Temperatures ◽  
Controlled Environment ◽  
Ambient Atmosphere ◽  
Air Exposure ◽  
X Ray ◽  
Environmental Transmission ◽  
Transmission Electron

AbstractSpecimen transfer under controlled environment conditions, such as temperature, pressure, and gas composition, is necessary to conduct successive complementary in situ characterization of materials sensitive to ambient conditions. The in situ transfer concept is introduced by linking an environmental transmission electron microscope to an in situ X-ray diffractometer through a dedicated transmission electron microscope specimen transfer holder, capable of sealing the specimen in a gaseous environment at elevated temperatures. Two catalyst material systems have been investigated; Cu/ZnO/Al2O3 catalyst for methanol synthesis and a Co/Al2O3 catalyst for Fischer–Tropsch synthesis. Both systems are sensitive to ambient atmosphere as they will oxidize after relatively short air exposure. The Cu/ZnO/Al2O3 catalyst, was reduced in the in situ X-ray diffractometer set-up, and subsequently, successfully transferred in a reactive environment to the environmental transmission electron microscope where further analysis on the local scale were conducted. The Co/Al2O3 catalyst was reduced in the environmental microscope and successfully kept reduced outside the microscope in a reactive environment. The in situ transfer holder facilitates complimentary in situ experiments of the same specimen without changing the specimen state during transfer.

System forIn SituUV-Visible Illumination of Environmental Transmission Electron Microscopy Samples

2013 ◽  
Vol 19 (2) ◽  
pp. 461-469 ◽  
Author(s):  
Benjamin K. Miller ◽  
Peter A. Crozier
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Optical Filters ◽  
Practical Implementation ◽  
High Brightness ◽  
Environmental Transmission ◽  
Transmission Electron ◽  
Broadband Light Source

AbstractA system for illuminating a samplein situwith visible and ultraviolet light inside a transmission electron microscope was devised to study photocatalysts. There are many mechanical and optical factors that must be considered when designing and building such a system. Some of the restrictions posed by the electron microscope column are significant, and care must be taken not to degrade the microscope's electron-optical performance or to unduly restrict the other capabilities of the microscope. We discuss the nature of the design considerations, as well as the practical implementation and characterization of a solution. The system that has been added to an environmental transmission electron microscope includes a high brightness broadband light source with optical filters, a fiber to guide the light to the sample, and a mechanism for precisely aligning the fiber tip.

In-Situ Studies of the MBE Growth of CoSi2 on Si (111) in a UHV Transmission Electron Microscope

1987 ◽  
Vol 94 ◽  
Author(s):  
J. M. Gibson ◽  
J. L. Batstone ◽  
R. T. Tung
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Ultrahigh Vacuum ◽  
Mbe Growth ◽  
In Situ Studies ◽  
Transmission Electron ◽  
Layer Mode ◽  
In Situ Observations

ABSTRACTIn-situ observations of the growth of CoSi2 films by Co deposition in an ultrahigh vacuum transmission electron microscope are described. Results include the observation of intermediate epitaxial phases (both hexagonally distorted Co2Si and CoSi) and the observation that pinholes nucleate in CoSi2 films after growth in a metastable layer mode.

In Situ Electrochemical Study of Na–O2/CO2 Batteries in an Environmental Transmission Electron Microscope

ACS Nano ◽  
2020 ◽  
Vol 14 (10) ◽  
pp. 13232-13245
Author(s):  
Qiunan Liu ◽  
Yongfu Tang ◽  
Haiming Sun ◽  
Tingting Yang ◽  
Yong Sun ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Electrochemical Study ◽  
Environmental Transmission ◽  
Transmission Electron
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