Month: January 2010

Atomic-bond resolution microscopy

Atomic-bond resolution microscopy

Pardon me while I go chemistry geek. It has recently come to my attention that Leo Gross and co-workers at IBM Research in Switzerland have developed a special atomic-force microscopy technique that can image actual molecules with enough resolution to “see” individual bonds and hydrogen atoms. Shown uppermost is a computer-generated model of the pentacene molecule, and below it, an actual image from the microscope. The microscope’s probe is tipped with a single molecule of carbon monoxide. Unbelievable.

World’s tiniest “snow” man

World’s tiniest “snow” man

It’s tin that’s been etched with a focused ion beam (FIB) instrument, with bits ion-welded platinum for the nose and to hold the tin spheres together. I guess it’s impractical to work with actual ice when you’re at the 10 micrometer scale. A human hair is about 50 micrometers across. It’s the work of Dr. David Cox and co-workers at the National Physical Laboratory in London.