项目名称: 生物分子高通量检测用量子点激光微球的制备及多色激光的实现
项目编号: No.51202160
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 无机非金属材料学科
项目作者: 谢闯
作者单位: 天津大学
项目金额: 25万元
中文摘要: 基于纳米量子点的生物分子检测编码技术和方法是值得大力发展的前沿领域,具有重要的应用意义。目前可应用的编码技术在编码能力上不足,新兴的各种技术在可靠性、编码库容量及成本上有着不同的缺陷,使得该领域有很大的发展空间。本项目申请面向生物分子的高通量检测,提出一种利用量子点微球发射激光的特性,通过对多色量子点激光排列组合进行编码的方法,以大大提高检测编码的库容量。项目研究拟以量子点激光微球为研究对象,重点研究量子点在微球表面的组装对微球谐振腔Q因子和激光产生阈值的影响规律。研究单色量子点激光微球的可重复性制备方法;并在此基础上,分别通过双、三色量子点在微球上共混协同组装和逐层组装的研究,探讨量子点尺寸和配比,微球结构和尺寸,量子点在微球上的组装方式,逐层组装时不同类型插层及其结构对激光产生影响规律,最终实现多色激光同时发射。为量子点激光微球在生物分子高通量检测方面的应用提供必要的基础。
中文关键词: 量子点;微球;谐振腔;激光;
英文摘要: Biomolecular detection encoding techniques based on the fluorescent properties of quantum dots hold great attention due to the huge application prospective. The applicable techniques are not adequate so far and most of new techniques have problems in reliability, coding capability, and cost. In this proposal, the quantum-dot microbead (QDB) is chosen as a potential tool towards the high-throughput detection of biomolecules on the basis of the lasing property of QDB. The study will focus on three points list below. (1) The reproducible preparation of single color lasing QDB; (2) The simultaneous assembling of bi/tri-color QDB and its effects on the Q-factor and the threhold of lasing; (3) The successive assembling of bi/tri-color QDB with different kinds of inter-layers and its effects on the formation of lasing. The proposed results would provide solid basis for the high-throughput detection of biomolecules and its further applications.
英文关键词: quantum dot;microbead;microcavity;lasing;