Dynamic imaging with electron microscopy

Multimedia · Thu Feb 20 04:00:00 EST 2014

OSTI ID:1132771

Campbell, Geoffrey ^[1]; McKeown, Joe; Santala, Melissa

---

1. USDOE/OSTI

Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

• Research Organization: LLNL (Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States))
• Sponsoring Organization: USDOE
• OSTI ID: 1132771
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
47 OTHER INSTRUMENTATION
DTEM
ELECTRON MICROSCOPE
IMAGING
LASER
LLNL
ULTRA VIOLET