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Plasmon-induced dual-wavelength operation in a Yb^(3+) laser

Light(Science & Applications) 2019年第1期8卷 1042-1050页

作者： Laura Sanchez-Garcia Mariola O.Ramirez rosa maria sole Joan J.Carvajal Francesc Diaz Luisa E.Bausa Deparment Fisica de Materiales Instituto Nicolas Cabrera and Condensed Matter Physics Center(IFIMAC)Universidad Autonoma de Madrid28049 MadridSpain Universitat Rovira i Virgili Departament Quimica Fisica i InorganicaFisica i Cristal·lografia de Materials i Nanomaterials(FiCMA-FiCNA)-EMaSE-43007 TarragonaSpain

Expanding the functionalities of plasmon-assisted lasers is essential for emergent applications in nanoscience and ***,we report on a novel ability of plasmonic structures to induce dual-wavelength lasing in the near-infrared region in a Yb^(3+) solid-state *** means of the effects of disordered plasmonic networks deposited on the surface of a Yb^(3+)-doped nonlinear RTP crystal,room-temperature dual-wavelength lasing,with a frequency difference between the lines in the THz range,is *** dual-wavelength laser is produced by the simultaneous activation of two lasing channels,namely,an electronic-and a phonon-terminated laser *** latter is enabled by the out-of-plane field components that are generated by the plasmonic structures,which excite specific Raman ***,multiline radiation at three different wavelengths is demonstrated in the visible spectral region via two self-frequency conversion processes,which occur in the vicinities of the plasmonic *** results demonstrate the potential of plasmonic nanostructures for inducing drastic modifications in the operational mode of a solid-state laser and hold promise for applications in a variety of fields,including multiplexing,precise spectroscopies,and THz radiation generation via a simple and cost-effective procedure.

关键词： laser lasing dual

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Glycerol ginger extract addition to edible coating formulation for preventing oxidation and fungal spoilage of stored walnuts

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Food Bioscience 2023年第2期52卷 872-878页

作者： Muhammad Nouman Shaukat rosa Palmeri Cristina Restuccia Lucia Parafati Biagio Fallico Di3A Dipartimento di AgricolturaAlimentazione e AmbienteUniversity of CataniaVia S.Sofia 10095123CataniaItaly

During storage,walnuts can undergo oxidation processes that lead to a decay of product quality and the development of rancidity and *** present study investigated how the application of a chitosan coating,containing a glycerol ginger extract(GGE)rich in bioactive compounds,can preserve walnut quality during *** can be considered a green extraction solvent,which allows to obtain extract rich in polyphenols and with high radical scavenging *** employed in the formulation of a chitosan-based coating determined significantly lower(psole ***,when artificially inoculated with Aspergillus flavus spore suspension,walnuts treated with GGE-enriched coating evidenced the lowest disease incidence and the lowest spore *** obtained encourage the application of coating containing GGE even in other rich lipid matrices that can easily undergo oxidation process or spoilage caused by phytopathogenic fungi.

关键词： Ginger extract Antioxidant activity Nut coating Lipid oxidation Peroxides value Aspergillus flavus incidence

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