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We have demonstrated a fast, sensitive fluorescent tapered tip optical fiber (TTOF) sensor to detect copper (Cu (II)) ions. The principle of detection is based on fluorescent quenching of fluorescein isothiocynate (FITC) doped fluorescent silica nanoparticles (FSi) by Cu(II) ions. TTOF was functionalized with FITC doped fluorescent silica nanoparticles (FSi), as transduction element. Amine functionalized...
We report a rapid and facile method to synthesize highly monodispersed silver nanoparticles (AgNP) by heteroepitaxial growth method using gold seed particles (size ~2 nm). Silver was deposited on gold seed particles by Tollen’s reaction. The presence of seed particles provided good control on the morphology and size distribution of AgNP, achieving the standard deviation in size ≤11 %. The real-time...
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