This ongoing work is reported in the inaugural problem of the journal Nature Nanotechnology levitra online.

This ongoing work is reported in the inaugural problem of the journal Nature Nanotechnology levitra online . Fanqing Frank Chen, Ph.D., at the Lawrence Berkeley National Laboratory, led a group of investigators that developed a nanoplasmonic ruler made to measure adjustments in DNA size quantitatively and in real time. The ruler uses precious metal nanoparticles and relies on the fact that precious metal nanoparticles emit light at well-defined wavelengths of light in a way that is highly influenced by the exact physical and chemical environment surrounding the particle.