April 23, 2007

On the path to molecular imaging MRI

Ibm researchers are making strides to their ultimate goal of viewing a protein's structure in 3-D. The researchers would need to precisely detect the locations of single hydrogen atoms in the protein. For this, the researchers would have to detect the magnetism, or spin, of a single nucleus, a resolution of about 0.1 nanometers. This is a challenge, says Chris Hammel, a physicist who does magnetic resonance research at Ohio State University.

Balancing act: In a new magnetic resonance imaging technique, researchers at IBM use a silicon cantilever to image a tiny sample of calcium fluoride with a resolution of 90 nanometers. The calcium fluoride is deposited on the tip of the cantilever’s thick free end. Credit: IBM Research

Images can be made of calcium-fluoride samples on the cantilever pillars and the distance between the pillars with a resolution of 90 nanometers. The volume of the calcium fluoride is 60,000 times smaller than the volume that conventional MRI microscopy can detect.

Congratulations! Now you can use SolidOpinion commenting system in all its magnificence! Click the link to get your password.

Форма для связи


Email *

Message *