Direct visualization of electromagnetic wave dynamics by laser-free ultrafast electron microscopy

Femtosecond lasers can be integrated with electron microscopes to directly image transient structures and morphologies in materials in real time and space. In a new report, Xuewen Fu and a team of scientists in condensed matter physics, microsystems, nanotechnology and materials science in China and the U.S. developed a laser-free ultrafast electron microscope (UEM) offering similar potential but without the requisite femtosecond lasers or elaborate instrumental modifications. The team created p...