Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites

Details Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites

2003-05-10

arxiv.org/abs/cond-mat/0305230v1

Physics

Condensed Matter

5 pages, 4 figure. To be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.67.212202

We describe a simple model for the melting and optical properties of a DNA/gold nanoparticle aggregate. The optical properties at fixed wavelength change dramatically at the melting transition, which is found to be higher and narrower in temperature for larger particles, and much sharper than that of an isolated DNA link. All these features are in agreement with available experiments. The aggregate is modeled as a cluster of gold nanoparticles on a periodic lattice connected by DNA bonds, and the extinction coefficient is computed using the discrete dipole approximation. Melting takes place as an increasing number of these bonds break with increasing temperature. The melting temperature corresponds approximately to the bond percolation threshold.

Affiliated with

Also associated with

No associations

Rating

Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of Melting and the Optical Properties of Gold/DNA Nanocomposites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-90152