Latest Issue of Science News


News

A nano–cheese slicer

A thin wire cuts through cheese more easily and cleanly than a flat blade does. Now, researchers have built a microscopic version of a cheese slicer—with a carbon nanotube for a wire—that's aimed at making improved slices of frozen cells.

Biologists have long used diamond blades, known as microtomes, to section flash-frozen cells into thin slices in preparation for microscopic scrutiny. However, such a wedgelike blade bends the top of the slice as it cuts, often creating cracks in the sample, says mechanical engineer Paul S. Rice of the Boulder campuses of the National Institute of Standards and Technology and the University of Colorado.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

X
This article is available only to subscribing members. Join SSP today or Log in.