UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix

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 adso...

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Autores principales:	Manoel L. da Silva-Neto, Mário C. A. de Oliveira, Christian T. Dominguez, Raquel E. M. Lins, Nikifor Rakov, Cid B. de Araújo, Leonardo de Souza Menezes, Helinando P. de Oliveira, Anderson S. L. Gomes
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/237d7e796b4143c69f7bca5ae5f380f7
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spelling	oai:doaj.org-article:237d7e796b4143c69f7bca5ae5f380f72021-12-02T15:09:37ZUV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix10.1038/s41598-019-48056-w2045-2322https://doaj.org/article/237d7e796b4143c69f7bca5ae5f380f72019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48056-whttps://doaj.org/toc/2045-2322Abstract 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.Manoel L. da Silva-NetoMário C. A. de OliveiraChristian T. DominguezRaquel E. M. LinsNikifor RakovCid B. de AraújoLeonardo de Souza MenezesHelinando P. de OliveiraAnderson S. L. GomesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Manoel L. da Silva-Neto Mário C. A. de Oliveira Christian T. Dominguez Raquel E. M. Lins Nikifor Rakov Cid B. de Araújo Leonardo de Souza Menezes Helinando P. de Oliveira Anderson S. L. Gomes UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
description	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.
format	article
author	Manoel L. da Silva-Neto Mário C. A. de Oliveira Christian T. Dominguez Raquel E. M. Lins Nikifor Rakov Cid B. de Araújo Leonardo de Souza Menezes Helinando P. de Oliveira Anderson S. L. Gomes
author_facet	Manoel L. da Silva-Neto Mário C. A. de Oliveira Christian T. Dominguez Raquel E. M. Lins Nikifor Rakov Cid B. de Araújo Leonardo de Souza Menezes Helinando P. de Oliveira Anderson S. L. Gomes
author_sort	Manoel L. da Silva-Neto
title	UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
title_short	UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
title_full	UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
title_fullStr	UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
title_full_unstemmed	UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix
title_sort	uv random laser emission from flexible zno-ag-enriched electrospun cellulose acetate fiber matrix
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/237d7e796b4143c69f7bca5ae5f380f7
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UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix

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