James created a range of nanostructures using DNA with precisely positioned fluorophore–quencher pairs over a range of nanoscale separation distances. Performing photoacoustic imaging of the DNA nanostructures showed distance-dependent photoacoustic signal enhancement and demonstrated the ability of photoacoustic imaging to reveal the quenching processes deep within tissue mimicking phantoms. You can read more at:
http://pubs.rsc.org/en/content/articlelanding/2017/nr/c7nr05353c#!divAbstract