DNA-driven construction of nanophotonic devices makes cover of Advanced Materials

Issued: Fri, 04 Jul 2014 16:19:00 BST

In this paper, Dr. Clark and collaborators have engineered a surface which is patterned at the nanoscale with both metal and DNA. The surface has been designed so that when complimentary DNA sequences to those patterned on the surface are introduced to it, the geometry of the metal surface changes, which in turn alters its optical and electrical properties. To demonstrate the potential of these new surfaces for molecularly-driven nanophotonic applications, the authors construct a nanophotonic sensor-circuit; using a single DNA-nanoparticle binding event as a molecular ‘switch’ which allows plasmonic coupling between two gold nanostructures. The sensor-circuit allows single binding events to be detected, as well as providing a route toward a new generation of active, hybrid metallic-molecular nanomaterials.

 

The article was published in the July 2nd Issue of Advanced Materials and can be accessed from the link:

http://onlinelibrary.wiley.com/doi/10.1002/adma.201400510/abstract

 

For more information contact Dr. Alasdair Clark http://www.gla.ac.uk/schools/engineering/staff/alasdairclark/