Controlled plasmon enhanced fluorescence by silver nanoparticles deposited onto nanotube arrays

Abstract

Three-dimensional (3D) plasmonic nanostructures of porous alumina array (PAA) with silver nanoparticles (AgNPs) were prepared for enhancing fluorescence emission. In order to avoid fluorescence quenching effects and obtain clear fluorescence enhancement, the molecules were separated by using such 3D substrates, and the mean distance between the molecules and nanoparticles' surface can be easily controlled by changing the diameters of the PAA tube. It was found that the PAA tube with smaller size provides better fluorescence enhancement. Enhanced cross section, a new fluorescence enhanced factor, combined with the simulation of localized electromagnetic field enhancement was presented to understand the experimental results.

Fine-tunable plasma nano-machining for fabrication of 3D hollow nanostructures: SERS application

“…Here, we instead address this effect as a useful technique for the manufacture of nanostructures, fine-tunable by changing the plasma pressure and power. Such nanostructures offer a powerful way of surface enhanced fluorescence [38][39][40], and surface enhanced Raman [41,42] effects.…”

Синтез, Состав, Фотолюминесценция, Стабильность Свойств Коллоидных Квантовых Точек На Основе Антимонида Индия

“…Несмотря на усиление агрегационных процессов при облучении ультрафиолетом с длиной волны 365 nm, в течение некоторого времени (20 min) интенсивность флуоресценции заметно увеличивается, и только при выпадении осадка (после 40 min) наблюдается снижение квантового выхода. Одним из возможных объяснений этого может быть возникновение плазменного резонанса на агрегированных частицах [12].…”