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首页> 外文期刊>Science of advanced materials >Fabrication of Optical Fiber phi Sensor Based on Near-Infrared (NIR) Quantum Dots
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Fabrication of Optical Fiber phi Sensor Based on Near-Infrared (NIR) Quantum Dots

机译：基于近红外量子点的光纤phi传感器的制作

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Quantum dots, nano-sized semiconductors, have shown various peculiar optical and electrical properties. In recent years several researches on the synthesis and application of quantum dots have been carried out and achieved great progresses. In our previous studies, several kinds of sensors have been fabricated using quantum dots. However, most of them are using cadmium based quantum dots which emit fluorescence in visible wave lengths. As the cadmium element can be released slowly in biological reaction, the use of cadmium based quantum dots in the medical area is limited. In this paper, we prepared optical fiber pH sensor using CuInS/ZnS near infrared quantum dots. The quantum dots were immobilized on the surface of tapered optical fiber as probes of pH. The surface of the optical fiber was silanized to enhance covalent bonds between quantum dot and optical fiber. The fluorescent intensity of the quantum dots on optical fiber shows a linear relation with pH.
机译：量子点，纳米级半导体，已显示出各种独特的光学和电学性质。近年来，关于量子点的合成和应用的研究已经开展了许多，并取得了很大的进展。在我们以前的研究中，已经使用量子点制造了几种传感器。然而，它们中的大多数都使用基于镉的量子点，该量子点以可见波长发射荧光。由于镉元素可以在生物反应中缓慢释放，因此在医学领域对基于镉的量子点的使用受到限制。在本文中，我们使用CuInS / ZnS近红外量子点制备了光纤pH传感器。将量子点固定在锥形光纤的表面上作为pH探针。光纤表面被硅烷化以增强量子点和光纤之间的共价键。光纤上量子点的荧光强度与pH呈线性关系。

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