Stochastic Computing Machines Enabled by DNA Self-Assembly
Abstract
The overall goal of this project is to determine optimal configuration and dynamics of spatially arranged chromophores on a self-assembled DNA grid, based on the principle of energy migration. Photonic wires are molecular devices that convey excited-state energy from an input to an output. The photonic wire in this project focuses on an array of chromophores engaging in multi-step FRET. This wire borrows from Resonance Energy Transfer and Energy migration principles predicted by Forster's theory. Energy migration works on the principle ofhomo-transfer, which involves identical dye molecules (chromophores) exchanging energy. Their band gap is such that there is a large enough singlet spread, and a small stokes shift with overlapping absorption and emission spectra, which results in a back-and-forth exciton diffusion. Hetero-transfer, on the other hand, uses a Donor-Acceptor configuration in which a Donor dye molecule excites an acceptor whose absorption spectrum overlaps with the donors emission spectrum. Each subsequent acceptor then becomes a donor to the next-in-line acceptor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 14, 2016
- Accession Number
- AD1080597
Entities
People
- Chris Dwyer
Organizations
- Duke University