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UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
- Source :
- Scientific Reports, Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
- Publication Year :
- 2019
- Publisher :
- Nature Publishing Group UK, 2019.
-
Abstract
- We report an alternative random laser (RL) architecture based on a flexible and ZnO-enriched cellulose acetate (CA) fiber matrix prepared by electrospinning. The electrospun fibers, mechanically reinforced by polyethylene oxide and impregnated with zinc oxide powder, were applied as an adsorbent surface to incorporate plasmonic centers (silver nanoprisms). The resulting structures – prepared in the absence (CA-ZnO) and in the presence of silver nanoparticles (CA-ZnO-Ag) - were developed to support light excitation, guiding and scattering prototypes of a RL. Both materials were excited by a pulsed (5 Hz, 5 ns) source at 355 nm and their fluorescence emission monitored at 387 nm. The results suggest that the addition of silver nanoprisms to the ZnO- enriched fiber matrix allows large improvement of the RL performance due to the plasmon resonance of the silver nanoprisms, with ~80% reduction in threshold energy. Besides the intensity and spectral analysis, the RL characterization included its spectral and intensity angular dependences. Bending the flexible RL did not affect the spectral characteristics of the device. No degradation was observed in the random laser emission for more than 10,000 shots of the pump laser.
- Subjects :
- 0301 basic medicine
Multidisciplinary
Materials science
Random laser
Electronic properties and materials
Scattering
Polymers
Science
Laser pumping
Cellulose acetate
Silver nanoparticle
Electrospinning
Article
03 medical and health sciences
chemistry.chemical_compound
030104 developmental biology
0302 clinical medicine
Chemical engineering
chemistry
Medicine
Surface plasmon resonance
030217 neurology & neurosurgery
Plasmon
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....fe9adb7788fb415fafe63db818ca0d07