Plasmon-enhanced random lasing in bio-compatible networks of cellulose nanofibers
Abstract
We report on plasmon-enhanced random lasing in bio-compatible light emitting Hydroxypropyl Cellulose (HPC) nanofiber networks doped with gold nanoparticles. HPC nanofibers with a diameter of 260 ± 30 nm were synthesized by a one step, cost-effective and facile electrospinning technique from a solution-containing Rhodamine 6G and Au nanoparticles. Nanoparticles of controlled diameters from 10 nm to 80 nm were dispersed inside the nanofibers and optically characterized using photoluminescence, dark-field spectroscopy, and coherent backscattering measurements. Plasmon-enhanced random lasing was demonstrated with a lower threshold than that in dye-doped identical HPC networks without Au nanoparticles. These findings provide an effective approach for plasmon-enhanced random lasers based on a bio-compatible host matrix that is particularly attractive for biophotonic applications such as fluorescence sensing, optical tagging, and detection.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 04, 2016
- Source ID
- 10.1063/1.4939263
Entities
People
- B. M. Reinhard
- F. G. Omenetto
- H. Cao
- Luca Dal Negro
- Rui Zhang
- S. F. Liew
- S. Knitter
Organizations
- Boston University
- National Science Foundation
- Office of Naval Research
- Tufts University
- Yale University