|
摘要:本发明公开了一种太赫兹超材料与纳米金颗粒联用的生物样品信号放大方法。配置不同浓度的多个生物样品溶液和金标亲和素溶液,在超材料表面滴加生物样品溶液后常温下晾干,在超材料表面滴加金标亲和素溶液后常温下晾干,采集超材料表面所有待测样品点与参考样品点的太赫兹时域信号,由太赫兹时域信号计算所有待测样品点与参考样品点的透射率或反射率,并根据透射率或反射率最低点对应的频率值计算得到透射峰或反射峰的频移。本发明联用太赫兹超材料与纳米金颗粒修饰,利用超材料电场局域增强效应放大样品信号;并利用纳米金改变电场分布效应,通过纳米金修饰进一步放大样品信号,检测灵敏度高,操作简便快速,能满足日益增长的快速检测需求。
|
Abstract: The invention discloses a biological sample signal amplification method adopting the combination of terahertz metamaterials and nanogold particles. The method comprises the following steps: preparing a plurality of biological sample solutions with different concentrations and gold standard avidin solutions with different concentrations; dropwise adding the biological sample solutions onto the surfaces of the terahertz metamaterials, and airing at the room temperature; dropwise adding the gold standard avidin solutions on the surfaces of the terahertz metamaterials, and airing at the room temperature; collecting terahertz time-domain signals of all sample points to be measured on the surfaces of the terahertz metamaterials and reference sample points; calculating the transmissivity or the reflectivity of all the sample points to be measured and the reference sample points according to the terahertz time-domain signals; and calculating to obtain the frequency shift of transmission peaks or reflection peaks according to the frequency value corresponding to the lowest point of the transmissivity or the reflectivity. According to the method, the terahertz metamaterials and the nanogold particles are used for modifying; the sample signals are amplified by using an electric field local enhancement effect of the metamaterials; the electric field distribution effect is changed by nanogold, and the sample signals are further amplified by nanogold modifying; and the detection is high in sensitivity, the operation is convenient and fast, and fast detection requirements increased day by day are met.
|
申请人: 浙江大学
|
Applicant: UNIV ZHEJIANG
|
地址: 310058 浙江省杭州市西湖区********(隐藏)
|
发明(设计)人: 应义斌 徐文道 谢丽娟
|
Inventor: YING YIBIN; XU WENDAO; XIE LIJUAN
|
主分类号: G01N21/3586(2014.01)I
|
分类号: G01N21/3586(2014.01)I G01N33/543(2006.01)I
|
|