Ultrafast electron microscope makes movies (Dec 8)
http://physicsweb.org/article/news/10/12/3
Physicists have created a new form of electron microscopy that can make
"movies" of atoms as they undergo ultra-rapid chemical or structural
transitions. Ahmed Zewail and colleagues at the California Institute of
Technology in the US have used coincident electron and laser pulses to
follow vanadium and oxygen atoms as they rearranged themselves on a
vanadium oxide surface over the course of several picoseconds. The
researchers say that the technique could also be used to study a wide
range of ultrafast biological and physical phenomena. (Proc. Natl. Acad.
Sci. 103 18427)).
.
|
