气候变化领域集成服务门户(CCPortal): Resonance energy transfer-assisted random lasing in light-harvesting bio-antenna enhanced with a plasmonic local field

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DOI	10.1039/c9ra08166f
	Resonance energy transfer-assisted random lasing in light-harvesting bio-antenna enhanced with a plasmonic local field
	Kumbhakar P.; Biswas S.; Kumbhakar P.
发表日期	2019
ISSN	20462069
起始页码	37705
结束页码	37713
卷号	9 期号:65
英文摘要	Thanks to the advent of the random laser, new light applications have opened up, ranging from biophotonic to security devices. Here, by using the well-known but unexplored light-harvesting bio-pigment of butterfly pea (Clitoria ternatea, CT) flower extract, generation of continuous-wave (CW) random lasing at ∼660 nm has been demonstrated. Furthermore, a wavelength tunability of ∼30 nm in the lasing emission was obtained by utilizing the resonance energy transfer (RET) mechanism in a gain medium with a binary mixture of CT extract and a commercially available methylene blue (MB) dye as the gain medium. In the CT extract-dye mixture, the bio-pigments are acting as donors and the MB dye molecules are acting as acceptors. Amplification in intensity of the lasing emission of this binary system has further been achieved in the presence of optimized concentrations of metal (Ag)-semiconductor (ZnO) scattering nanoparticles. Interestingly, the lasing threshold has been reduced from 128 to 25 W cm-2, with a narrowed emission peak just after loading of the Ag nanoplasmon in the ZnO-doped binary gain medium. Thanks to the strong localized electric field in the metal nanoplasmon, and the multiple scattering effects of ZnO, the lasing threshold was reduced by approximately four times compared to that of the gain medium without the use of scatterers. Thus, we believe that our findings on wavelength-tunable, non-toxic, biocompatible random lasing will open up new applications, including the design of low-cost biophotonic devices. The Royal Society of Chemistry.
scopus关键词	Antennas; Aromatic compounds; Binary mixtures; Biocompatibility; Electric fields; Electromagnetic wave scattering; Energy transfer; II-VI semiconductors; Magnetic semiconductors; Metal nanoparticles; Plasmonics; Semiconducting silver compounds; Silver compounds; Wide band gap semiconductors; Zinc oxide; Clitoria ternatea; Continuous waves; Lasing emissions; Light-harvesting; Multiple scattering effect; Resonance energy transfer; Wavelength tunability; Wavelength tunable; Semiconducting zinc compounds
来源期刊	RSC Advances
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176555
作者单位	Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, India
推荐引用方式 GB/T 7714	Kumbhakar P.,Biswas S.,Kumbhakar P.. Resonance energy transfer-assisted random lasing in light-harvesting bio-antenna enhanced with a plasmonic local field[J],2019,9(65).
APA	Kumbhakar P.,Biswas S.,&Kumbhakar P..(2019).Resonance energy transfer-assisted random lasing in light-harvesting bio-antenna enhanced with a plasmonic local field.RSC Advances,9(65).
MLA	Kumbhakar P.,et al."Resonance energy transfer-assisted random lasing in light-harvesting bio-antenna enhanced with a plasmonic local field".RSC Advances 9.65(2019).