© University of California - Davis
A new method to make very small patterns of DNA molecules on surfaces has been developed by chemists at the University of California, Davis, and Wayne State University, Detroit. The technique could allow faster and more powerful devices for DNA sequencing, biological sensors and disease diagnosis.
The technique, called nanografting, can be used to make patterns of DNA that are up to a thousand times smaller than those in commercially available microarrays, said UC Davis chemist Gang-yu Liu. Liu developed the method with Christine Chow at Wayne State University and UC Davis graduate students Maozi Liu and Nabil Amro.
"We believe these are the smallest nanostructures of DNA yet made," Liu said. They drew lines as small as 15 nanometers across by 150 nanometers long -- equivalent to eight DNA molecules across. The same method can be applied to make structures as small as two by four nanometers, or a few billionths of an inch, in size.
Andy Fell | EurekAlert!
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