Array-based photoacoustic spectroscopy
    5.
    发明授权
    Array-based photoacoustic spectroscopy 失效
    基于阵列的光声光谱

    公开(公告)号:US06870626B2

    公开(公告)日:2005-03-22

    申请号:US10001235

    申请日:2001-11-13

    IPC分类号: G01N21/17 G01N21/25 G01N21/59

    CPC分类号: G01N21/253 G01N21/1702

    摘要: Methods and apparatus for simultaneous or sequential, rapid analysis of multiple samples by photoacoustic spectroscopy are disclosed. A photoacoustic spectroscopy sample array including a body having at least three recesses or affinity masses connected thereto is used in conjunction with a photoacoustic spectroscopy system. At least one acoustic detector is positioned near the recesses or affinity masses for detection of acoustic waves emitted from species of interest within the recesses or affinity masses.

    摘要翻译: 公开了通过光声光谱同时或顺序,快速分析多个样品的方法和装置。 结合光声光谱系统使用包括具有连接到其上的至少三个凹部或亲和质量的主体的光声光谱样品阵列。 至少一个声学检测器位于凹部或亲和质量附近,用于检测在凹陷或亲和质量内感兴趣的物体发射的声波。

    Photoacoustic method for measuring concentration of chemical species
    9.
    发明授权
    Photoacoustic method for measuring concentration of chemical species 失效
    用于测量化学物质浓度的光声法

    公开(公告)号:US06244101B1

    公开(公告)日:2001-06-12

    申请号:US09322910

    申请日:1999-06-01

    IPC分类号: G01N2117

    CPC分类号: G01N21/1702

    摘要: The present invention is a transducer for photoacoustic detection having at least two piezoelectric elements wherein at least a first piezoelectric element has a first frequency and at least a second piezoelectric element has a second frequency. The improvement according to the present invention is that at least two piezoelectric elements are longitudinal elements for longitudinal waves; and the first frequency is different from said second frequency. In other words, the invention is a multi-frequency longitudinal transducer for photoacoustic detection.

    摘要翻译: 本发明是一种用于光声检测的换能器,具有至少两个压电元件,其中至少第一压电元件具有第一频率,并且至少第二压电元件具有第二频率。 根据本发明的改进是至少两个压电元件是用于纵波的纵向元件; 并且第一频率与所述第二频率不同。 换句话说,本发明是用于光声检测的多频纵向换能器。