Development of a Novel Environmental Cell for In-Situ Gas Reaction Experiments via Aberration-Corrected STEM Imaging

Conference · Fri Jan 01 04:00:00 EST 2010

DOI:https://doi.org/10.1017/S1431927610062495· OSTI ID:1362185

Allard, Jr, Lawrence Frederick ^[1]; Bigelow, Wilbur C ^[2]; Nackashi, David P. ^[3]; Damiano, John ^[3]

---

1. ORNL
2. University of Michigan
3. Protochips Inc., Raleigh, NC

A novel heating technology composed of a disposable MEMS-based (microelectromechanical systems) device has recently been developed and shown to provide unique in-situ heating capabilities in electron microscopes [1]. Protochips, Inc. (Raleigh, NC) provides the AduroTM heater technology, composed of a disposable MEMS device that serves both as the heating element and the specimen support grid, a TEM holder with electrical feed-throughs, and an external current source. This system has been shown to provide near instantaneous (106 C/s) heating and cooling, and is stable to the limit of the microscope's specimen stage so full sub- ngstr m image resolution in highangle annular dark-field imaging mode can be achieved on our JEOL 2200FS scanning transmission electron microscope (STEM/TEM) instrument, fitted with a hexapole corrector on the probe-forming lenses (CEOS GmbH, Heidelberg, Ger.). This heating technology is being extended to function in a closed cell system that allows heating in a gaseous environment for in-situ elevated temperature reaction studies. The design concepts and early results of testing of the environmental cell (E-cell) performance are detailed here.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Temperature Materials Laboratory (HTML)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1362185
• Country of Publication: United States
• Language: English

Related Subjects

Environmental cell
STEM
aberration-corrected
electron microscopy
gas reaction
in-situ