Fluorescent nanoparticles (NPs) exhibit unique optical properties which are utilized to prepare highly sensitive sensors. This paper illustrates the enhancement of luminescence emission of CdS quantum dots (QDs) from self-assembled metallic NPs of Cu and Ag. Metallic NPs, especially of Cu, Ag and Au exhibit unique and tunable plasmonic properties which are further manipulated by varying their size and shape. In the present study, plasmonic NPs were fabricated on glass substrate heated at 400 °C for the conversion of metallic layers into homogeneous NPs so as to create plasmonic response from these uniform NPs. The bimetallic layers of Ag and Cu NPs form a composite material having higher thermal conductivity, higher chemical stability and lower value of thermal expansion than monometallic layer of NPs. The photo-luminescence enhancement of CdS QDs thin films deposited on Cu and Ag NPs would find applications as light emitters and sensing devices. The attachment of CdS QDs on these bimetallic layers was confirmed by studying their optical properties. The morphology of the three prepared samples was analysed by scanning electron microscopy, which confirms the homogeneous deposition of spherical Cu and Ag NPs having size ranging from 20 to 55 nm (approximately). The above obtained outcomes illustrate the localized surface plasmon resonance characteristic of metal NPs which can be applied further for chemical and biological sensing

荧光纳米粒子 (NPs) 具有独特的光学特性，可用于制备高灵敏度传感器。本文说明了 Cu 和 Ag 的自组装金属 NPs 增强 CdS 量子点 (QDs) 的发光发射。金属纳米粒子，尤其是铜、银和金的纳米粒子，表现出独特且可调的等离子体特性，通过改变它们的大小和形状可以进一步控制这些特性。在本研究中，等离子体 NPs 在 400°C 加热的玻璃基板上制造，用于将金属层转化为均匀的 NPs，从而从这些均匀的 NPs 产生等离子体响应。Ag和Cu NPs的双金属层形成的复合材料比NPs的单金属层具有更高的导热性、更高的化学稳定性和更低的热膨胀值。沉积在 Cu 和 Ag NPs 上的 CdS QDs 薄膜的光致发光增强将用作光发射器和传感装置。通过研究它们的光学特性，证实了 CdS QD 在这些双金属层上的附着。通过扫描电子显微镜分析了三个制备样品的形态，这证实了球形 Cu 和 Ag NPs 的均匀沉积，其尺寸范围为 20 至 55 nm（大约）。上述结果说明了金属纳米粒子的局部表面等离子体共振特性，可进一步应用于化学和生物传感 通过扫描电子显微镜分析了三个制备样品的形态，这证实了球形 Cu 和 Ag NPs 的均匀沉积，其尺寸范围为 20 至 55 nm（大约）。上述结果说明了金属纳米粒子的局部表面等离子体共振特性，可进一步应用于化学和生物传感 通过扫描电子显微镜分析了三个制备样品的形态，这证实了球形 Cu 和 Ag NPs 的均匀沉积，其尺寸范围为 20 至 55 nm（大约）。上述结果说明了金属纳米粒子的局部表面等离子体共振特性，可进一步应用于化学和生物传感